### 導航
- [索引](../genindex.xhtml "總目錄")
- [模塊](../py-modindex.xhtml "Python 模塊索引") |
- [下一頁](xml.dom.minidom.xhtml "xml.dom.minidom --- Minimal DOM implementation") |
- [上一頁](xml.etree.elementtree.xhtml "xml.etree.ElementTree --- The ElementTree XML API") |
- 
- [Python](https://www.python.org/) ?
- zh\_CN 3.7.3 [文檔](../index.xhtml) ?
- [Python 標準庫](index.xhtml) ?
- [結構化標記處理工具](markup.xhtml) ?
- $('.inline-search').show(0); |
# [`xml.dom`](#module-xml.dom "xml.dom: Document Object Model API for Python.") --- The Document Object Model API
**Source code:** [Lib/xml/dom/\_\_init\_\_.py](https://github.com/python/cpython/tree/3.7/Lib/xml/dom/__init__.py) \[https://github.com/python/cpython/tree/3.7/Lib/xml/dom/\_\_init\_\_.py\]
- - - - - -
The Document Object Model, or "DOM," is a cross-language API from the World Wide Web Consortium (W3C) for accessing and modifying XML documents. A DOM implementation presents an XML document as a tree structure, or allows client code to build such a structure from scratch. It then gives access to the structure through a set of objects which provided well-known interfaces.
The DOM is extremely useful for random-access applications. SAX only allows you a view of one bit of the document at a time. If you are looking at one SAX element, you have no access to another. If you are looking at a text node, you have no access to a containing element. When you write a SAX application, you need to keep track of your program's position in the document somewhere in your own code. SAX does not do it for you. Also, if you need to look ahead in the XML document, you are just out of luck.
Some applications are simply impossible in an event driven model with no access to a tree. Of course you could build some sort of tree yourself in SAX events, but the DOM allows you to avoid writing that code. The DOM is a standard tree representation for XML data.
The Document Object Model is being defined by the W3C in stages, or "levels" in their terminology. The Python mapping of the API is substantially based on the DOM Level 2 recommendation.
DOM applications typically start by parsing some XML into a DOM. How this is accomplished is not covered at all by DOM Level 1, and Level 2 provides only limited improvements: There is a `DOMImplementation` object class which provides access to `Document` creation methods, but no way to access an XML reader/parser/Document builder in an implementation-independent way. There is also no well-defined way to access these methods without an existing `Document` object. In Python, each DOM implementation will provide a function [`getDOMImplementation()`](#xml.dom.getDOMImplementation "xml.dom.getDOMImplementation"). DOM Level 3 adds a Load/Store specification, which defines an interface to the reader, but this is not yet available in the Python standard library.
Once you have a DOM document object, you can access the parts of your XML document through its properties and methods. These properties are defined in the DOM specification; this portion of the reference manual describes the interpretation of the specification in Python.
The specification provided by the W3C defines the DOM API for Java, ECMAScript, and OMG IDL. The Python mapping defined here is based in large part on the IDL version of the specification, but strict compliance is not required (though implementations are free to support the strict mapping from IDL). See section [Conformance](#dom-conformance) for a detailed discussion of mapping requirements.
參見
[Document Object Model (DOM) Level 2 Specification](https://www.w3.org/TR/2000/REC-DOM-Level-2-Core-20001113/) \[https://www.w3.org/TR/2000/REC-DOM-Level-2-Core-20001113/\]The W3C recommendation upon which the Python DOM API is based.
[Document Object Model (DOM) Level 1 Specification](https://www.w3.org/TR/REC-DOM-Level-1/) \[https://www.w3.org/TR/REC-DOM-Level-1/\]The W3C recommendation for the DOM supported by [`xml.dom.minidom`](xml.dom.minidom.xhtml#module-xml.dom.minidom "xml.dom.minidom: Minimal Document Object Model (DOM) implementation.").
[Python Language Mapping Specification](http://www.omg.org/cgi-bin/doc?formal/02-11-05.pdf) \[http://www.omg.org/cgi-bin/doc?formal/02-11-05.pdf\]This specifies the mapping from OMG IDL to Python.
## 模塊內容
The [`xml.dom`](#module-xml.dom "xml.dom: Document Object Model API for Python.") contains the following functions:
`xml.dom.``registerDOMImplementation`(*name*, *factory*)Register the *factory* function with the name *name*. The factory function should return an object which implements the `DOMImplementation`interface. The factory function can return the same object every time, or a new one for each call, as appropriate for the specific implementation (e.g. if that implementation supports some customization).
`xml.dom.``getDOMImplementation`(*name=None*, *features=()*)Return a suitable DOM implementation. The *name* is either well-known, the module name of a DOM implementation, or `None`. If it is not `None`, imports the corresponding module and returns a `DOMImplementation` object if the import succeeds. If no name is given, and if the environment variable `PYTHON_DOM` is set, this variable is used to find the implementation.
If name is not given, this examines the available implementations to find one with the required feature set. If no implementation can be found, raise an [`ImportError`](exceptions.xhtml#ImportError "ImportError"). The features list must be a sequence of
```
(feature,
version)
```
pairs which are passed to the `hasFeature()` method on available `DOMImplementation` objects.
Some convenience constants are also provided:
`xml.dom.``EMPTY_NAMESPACE`The value used to indicate that no namespace is associated with a node in the DOM. This is typically found as the `namespaceURI` of a node, or used as the *namespaceURI* parameter to a namespaces-specific method.
`xml.dom.``XML_NAMESPACE`The namespace URI associated with the reserved prefix `xml`, as defined by [Namespaces in XML](https://www.w3.org/TR/REC-xml-names/) \[https://www.w3.org/TR/REC-xml-names/\] (section 4).
`xml.dom.``XMLNS_NAMESPACE`The namespace URI for namespace declarations, as defined by [Document Object Model (DOM) Level 2 Core Specification](https://www.w3.org/TR/DOM-Level-2-Core/core.html) \[https://www.w3.org/TR/DOM-Level-2-Core/core.html\] (section 1.1.8).
`xml.dom.``XHTML_NAMESPACE`The URI of the XHTML namespace as defined by [XHTML 1.0: The Extensible HyperText Markup Language](https://www.w3.org/TR/xhtml1/) \[https://www.w3.org/TR/xhtml1/\] (section 3.1.1).
In addition, [`xml.dom`](#module-xml.dom "xml.dom: Document Object Model API for Python.") contains a base `Node` class and the DOM exception classes. The `Node` class provided by this module does not implement any of the methods or attributes defined by the DOM specification; concrete DOM implementations must provide those. The `Node` class provided as part of this module does provide the constants used for the `nodeType` attribute on concrete `Node` objects; they are located within the class rather than at the module level to conform with the DOM specifications.
## Objects in the DOM
The definitive documentation for the DOM is the DOM specification from the W3C.
Note that DOM attributes may also be manipulated as nodes instead of as simple strings. It is fairly rare that you must do this, however, so this usage is not yet documented.
Interface
Section
目的
`DOMImplementation`
[DOMImplementation Objects](#dom-implementation-objects)
Interface to the underlying implementation.
`Node`
[Node Objects](#dom-node-objects)
Base interface for most objects in a document.
`NodeList`
[NodeList Objects](#dom-nodelist-objects)
Interface for a sequence of nodes.
`DocumentType`
[DocumentType Objects](#dom-documenttype-objects)
Information about the declarations needed to process a document.
`Document`
[Document Objects](#dom-document-objects)
Object which represents an entire document.
`Element`
[Element Objects](#dom-element-objects)
Element nodes in the document hierarchy.
`Attr`
[Attr Objects](#dom-attr-objects)
Attribute value nodes on element nodes.
`Comment`
[Comment Objects](#dom-comment-objects)
Representation of comments in the source document.
`Text`
[Text and CDATASection Objects](#dom-text-objects)
Nodes containing textual content from the document.
`ProcessingInstruction`
[ProcessingInstruction Objects](#dom-pi-objects)
Processing instruction representation.
An additional section describes the exceptions defined for working with the DOM in Python.
### DOMImplementation Objects
The `DOMImplementation` interface provides a way for applications to determine the availability of particular features in the DOM they are using. DOM Level 2 added the ability to create new `Document` and `DocumentType` objects using the `DOMImplementation` as well.
`DOMImplementation.``hasFeature`(*feature*, *version*)Return true if the feature identified by the pair of strings *feature* and *version* is implemented.
`DOMImplementation.``createDocument`(*namespaceUri*, *qualifiedName*, *doctype*)Return a new `Document` object (the root of the DOM), with a child `Element` object having the given *namespaceUri* and *qualifiedName*. The *doctype* must be a `DocumentType` object created by [`createDocumentType()`](#xml.dom.DOMImplementation.createDocumentType "xml.dom.DOMImplementation.createDocumentType"), or `None`. In the Python DOM API, the first two arguments can also be `None` in order to indicate that no `Element`child is to be created.
`DOMImplementation.``createDocumentType`(*qualifiedName*, *publicId*, *systemId*)Return a new `DocumentType` object that encapsulates the given *qualifiedName*, *publicId*, and *systemId* strings, representing the information contained in an XML document type declaration.
### Node Objects
All of the components of an XML document are subclasses of `Node`.
`Node.``nodeType`An integer representing the node type. Symbolic constants for the types are on the `Node` object: `ELEMENT_NODE`, `ATTRIBUTE_NODE`, `TEXT_NODE`, `CDATA_SECTION_NODE`, `ENTITY_NODE`, `PROCESSING_INSTRUCTION_NODE`, `COMMENT_NODE`, `DOCUMENT_NODE`, `DOCUMENT_TYPE_NODE`, `NOTATION_NODE`. This is a read-only attribute.
`Node.``parentNode`The parent of the current node, or `None` for the document node. The value is always a `Node` object or `None`. For `Element` nodes, this will be the parent element, except for the root element, in which case it will be the `Document` object. For `Attr` nodes, this is always `None`. This is a read-only attribute.
`Node.``attributes`A `NamedNodeMap` of attribute objects. Only elements have actual values for this; others provide `None` for this attribute. This is a read-only attribute.
`Node.``previousSibling`The node that immediately precedes this one with the same parent. For instance the element with an end-tag that comes just before the *self*element's start-tag. Of course, XML documents are made up of more than just elements so the previous sibling could be text, a comment, or something else. If this node is the first child of the parent, this attribute will be `None`. This is a read-only attribute.
`Node.``nextSibling`The node that immediately follows this one with the same parent. See also [`previousSibling`](#xml.dom.Node.previousSibling "xml.dom.Node.previousSibling"). If this is the last child of the parent, this attribute will be `None`. This is a read-only attribute.
`Node.``childNodes`A list of nodes contained within this node. This is a read-only attribute.
`Node.``firstChild`The first child of the node, if there are any, or `None`. This is a read-only attribute.
`Node.``lastChild`The last child of the node, if there are any, or `None`. This is a read-only attribute.
`Node.``localName`The part of the `tagName` following the colon if there is one, else the entire `tagName`. The value is a string.
`Node.``prefix`The part of the `tagName` preceding the colon if there is one, else the empty string. The value is a string, or `None`.
`Node.``namespaceURI`The namespace associated with the element name. This will be a string or `None`. This is a read-only attribute.
`Node.``nodeName`This has a different meaning for each node type; see the DOM specification for details. You can always get the information you would get here from another property such as the `tagName` property for elements or the `name`property for attributes. For all node types, the value of this attribute will be either a string or `None`. This is a read-only attribute.
`Node.``nodeValue`This has a different meaning for each node type; see the DOM specification for details. The situation is similar to that with [`nodeName`](#xml.dom.Node.nodeName "xml.dom.Node.nodeName"). The value is a string or `None`.
`Node.``hasAttributes`()Returns true if the node has any attributes.
`Node.``hasChildNodes`()Returns true if the node has any child nodes.
`Node.``isSameNode`(*other*)Returns true if *other* refers to the same node as this node. This is especially useful for DOM implementations which use any sort of proxy architecture (because more than one object can refer to the same node).
注解
This is based on a proposed DOM Level 3 API which is still in the "working draft" stage, but this particular interface appears uncontroversial. Changes from the W3C will not necessarily affect this method in the Python DOM interface (though any new W3C API for this would also be supported).
`Node.``appendChild`(*newChild*)Add a new child node to this node at the end of the list of children, returning *newChild*. If the node was already in the tree, it is removed first.
`Node.``insertBefore`(*newChild*, *refChild*)Insert a new child node before an existing child. It must be the case that *refChild* is a child of this node; if not, [`ValueError`](exceptions.xhtml#ValueError "ValueError") is raised. *newChild* is returned. If *refChild* is `None`, it inserts *newChild* at the end of the children's list.
`Node.``removeChild`(*oldChild*)Remove a child node. *oldChild* must be a child of this node; if not, [`ValueError`](exceptions.xhtml#ValueError "ValueError") is raised. *oldChild* is returned on success. If *oldChild*will not be used further, its `unlink()` method should be called.
`Node.``replaceChild`(*newChild*, *oldChild*)Replace an existing node with a new node. It must be the case that *oldChild*is a child of this node; if not, [`ValueError`](exceptions.xhtml#ValueError "ValueError") is raised.
`Node.``normalize`()Join adjacent text nodes so that all stretches of text are stored as single `Text` instances. This simplifies processing text from a DOM tree for many applications.
`Node.``cloneNode`(*deep*)Clone this node. Setting *deep* means to clone all child nodes as well. This returns the clone.
### NodeList Objects
A `NodeList` represents a sequence of nodes. These objects are used in two ways in the DOM Core recommendation: an `Element` object provides one as its list of child nodes, and the `getElementsByTagName()` and `getElementsByTagNameNS()` methods of `Node` return objects with this interface to represent query results.
The DOM Level 2 recommendation defines one method and one attribute for these objects:
`NodeList.``item`(*i*)Return the *i*'th item from the sequence, if there is one, or `None`. The index *i* is not allowed to be less than zero or greater than or equal to the length of the sequence.
`NodeList.``length`The number of nodes in the sequence.
In addition, the Python DOM interface requires that some additional support is provided to allow `NodeList` objects to be used as Python sequences. All `NodeList` implementations must include support for [`__len__()`](../reference/datamodel.xhtml#object.__len__ "object.__len__") and [`__getitem__()`](../reference/datamodel.xhtml#object.__getitem__ "object.__getitem__"); this allows iteration over the `NodeList` in [`for`](../reference/compound_stmts.xhtml#for) statements and proper support for the [`len()`](functions.xhtml#len "len") built-in function.
If a DOM implementation supports modification of the document, the `NodeList` implementation must also support the [`__setitem__()`](../reference/datamodel.xhtml#object.__setitem__ "object.__setitem__") and [`__delitem__()`](../reference/datamodel.xhtml#object.__delitem__ "object.__delitem__") methods.
### DocumentType Objects
Information about the notations and entities declared by a document (including the external subset if the parser uses it and can provide the information) is available from a `DocumentType` object. The `DocumentType` for a document is available from the `Document` object's `doctype`attribute; if there is no `DOCTYPE` declaration for the document, the document's `doctype` attribute will be set to `None` instead of an instance of this interface.
`DocumentType` is a specialization of `Node`, and adds the following attributes:
`DocumentType.``publicId`The public identifier for the external subset of the document type definition. This will be a string or `None`.
`DocumentType.``systemId`The system identifier for the external subset of the document type definition. This will be a URI as a string, or `None`.
`DocumentType.``internalSubset`A string giving the complete internal subset from the document. This does not include the brackets which enclose the subset. If the document has no internal subset, this should be `None`.
`DocumentType.``name`The name of the root element as given in the `DOCTYPE` declaration, if present.
`DocumentType.``entities`This is a `NamedNodeMap` giving the definitions of external entities. For entity names defined more than once, only the first definition is provided (others are ignored as required by the XML recommendation). This may be `None` if the information is not provided by the parser, or if no entities are defined.
`DocumentType.``notations`This is a `NamedNodeMap` giving the definitions of notations. For notation names defined more than once, only the first definition is provided (others are ignored as required by the XML recommendation). This may be `None` if the information is not provided by the parser, or if no notations are defined.
### Document Objects
A `Document` represents an entire XML document, including its constituent elements, attributes, processing instructions, comments etc. Remember that it inherits properties from `Node`.
`Document.``documentElement`The one and only root element of the document.
`Document.``createElement`(*tagName*)Create and return a new element node. The element is not inserted into the document when it is created. You need to explicitly insert it with one of the other methods such as `insertBefore()` or `appendChild()`.
`Document.``createElementNS`(*namespaceURI*, *tagName*)Create and return a new element with a namespace. The *tagName* may have a prefix. The element is not inserted into the document when it is created. You need to explicitly insert it with one of the other methods such as `insertBefore()` or `appendChild()`.
`Document.``createTextNode`(*data*)Create and return a text node containing the data passed as a parameter. As with the other creation methods, this one does not insert the node into the tree.
`Document.``createComment`(*data*)Create and return a comment node containing the data passed as a parameter. As with the other creation methods, this one does not insert the node into the tree.
`Document.``createProcessingInstruction`(*target*, *data*)Create and return a processing instruction node containing the *target* and *data* passed as parameters. As with the other creation methods, this one does not insert the node into the tree.
`Document.``createAttribute`(*name*)Create and return an attribute node. This method does not associate the attribute node with any particular element. You must use `setAttributeNode()` on the appropriate `Element` object to use the newly created attribute instance.
`Document.``createAttributeNS`(*namespaceURI*, *qualifiedName*)Create and return an attribute node with a namespace. The *tagName* may have a prefix. This method does not associate the attribute node with any particular element. You must use `setAttributeNode()` on the appropriate `Element` object to use the newly created attribute instance.
`Document.``getElementsByTagName`(*tagName*)Search for all descendants (direct children, children's children, etc.) with a particular element type name.
`Document.``getElementsByTagNameNS`(*namespaceURI*, *localName*)Search for all descendants (direct children, children's children, etc.) with a particular namespace URI and localname. The localname is the part of the namespace after the prefix.
### Element Objects
`Element` is a subclass of `Node`, so inherits all the attributes of that class.
`Element.``tagName`The element type name. In a namespace-using document it may have colons in it. The value is a string.
`Element.``getElementsByTagName`(*tagName*)Same as equivalent method in the `Document` class.
`Element.``getElementsByTagNameNS`(*namespaceURI*, *localName*)Same as equivalent method in the `Document` class.
`Element.``hasAttribute`(*name*)Returns true if the element has an attribute named by *name*.
`Element.``hasAttributeNS`(*namespaceURI*, *localName*)Returns true if the element has an attribute named by *namespaceURI* and *localName*.
`Element.``getAttribute`(*name*)Return the value of the attribute named by *name* as a string. If no such attribute exists, an empty string is returned, as if the attribute had no value.
`Element.``getAttributeNode`(*attrname*)Return the `Attr` node for the attribute named by *attrname*.
`Element.``getAttributeNS`(*namespaceURI*, *localName*)Return the value of the attribute named by *namespaceURI* and *localName* as a string. If no such attribute exists, an empty string is returned, as if the attribute had no value.
`Element.``getAttributeNodeNS`(*namespaceURI*, *localName*)Return an attribute value as a node, given a *namespaceURI* and *localName*.
`Element.``removeAttribute`(*name*)Remove an attribute by name. If there is no matching attribute, a [`NotFoundErr`](#xml.dom.NotFoundErr "xml.dom.NotFoundErr") is raised.
`Element.``removeAttributeNode`(*oldAttr*)Remove and return *oldAttr* from the attribute list, if present. If *oldAttr* is not present, [`NotFoundErr`](#xml.dom.NotFoundErr "xml.dom.NotFoundErr") is raised.
`Element.``removeAttributeNS`(*namespaceURI*, *localName*)Remove an attribute by name. Note that it uses a localName, not a qname. No exception is raised if there is no matching attribute.
`Element.``setAttribute`(*name*, *value*)Set an attribute value from a string.
`Element.``setAttributeNode`(*newAttr*)Add a new attribute node to the element, replacing an existing attribute if necessary if the `name` attribute matches. If a replacement occurs, the old attribute node will be returned. If *newAttr* is already in use, [`InuseAttributeErr`](#xml.dom.InuseAttributeErr "xml.dom.InuseAttributeErr") will be raised.
`Element.``setAttributeNodeNS`(*newAttr*)Add a new attribute node to the element, replacing an existing attribute if necessary if the `namespaceURI` and `localName` attributes match. If a replacement occurs, the old attribute node will be returned. If *newAttr*is already in use, [`InuseAttributeErr`](#xml.dom.InuseAttributeErr "xml.dom.InuseAttributeErr") will be raised.
`Element.``setAttributeNS`(*namespaceURI*, *qname*, *value*)Set an attribute value from a string, given a *namespaceURI* and a *qname*. Note that a qname is the whole attribute name. This is different than above.
### Attr Objects
`Attr` inherits from `Node`, so inherits all its attributes.
`Attr.``name`The attribute name. In a namespace-using document it may include a colon.
`Attr.``localName`The part of the name following the colon if there is one, else the entire name. This is a read-only attribute.
`Attr.``prefix`The part of the name preceding the colon if there is one, else the empty string.
`Attr.``value`The text value of the attribute. This is a synonym for the `nodeValue` attribute.
### NamedNodeMap Objects
`NamedNodeMap` does *not* inherit from `Node`.
`NamedNodeMap.``length`The length of the attribute list.
`NamedNodeMap.``item`(*index*)Return an attribute with a particular index. The order you get the attributes in is arbitrary but will be consistent for the life of a DOM. Each item is an attribute node. Get its value with the `value` attribute.
There are also experimental methods that give this class more mapping behavior. You can use them or you can use the standardized `getAttribute*()` family of methods on the `Element` objects.
### Comment Objects
`Comment` represents a comment in the XML document. It is a subclass of `Node`, but cannot have child nodes.
`Comment.``data`The content of the comment as a string. The attribute contains all characters between the leading `<!-``-` and trailing `-``->`, but does not include them.
### Text and CDATASection Objects
The `Text` interface represents text in the XML document. If the parser and DOM implementation support the DOM's XML extension, portions of the text enclosed in CDATA marked sections are stored in `CDATASection` objects. These two interfaces are identical, but provide different values for the `nodeType` attribute.
These interfaces extend the `Node` interface. They cannot have child nodes.
`Text.``data`The content of the text node as a string.
注解
The use of a `CDATASection` node does not indicate that the node represents a complete CDATA marked section, only that the content of the node was part of a CDATA section. A single CDATA section may be represented by more than one node in the document tree. There is no way to determine whether two adjacent `CDATASection` nodes represent different CDATA marked sections.
### ProcessingInstruction Objects
Represents a processing instruction in the XML document; this inherits from the `Node` interface and cannot have child nodes.
`ProcessingInstruction.``target`The content of the processing instruction up to the first whitespace character. This is a read-only attribute.
`ProcessingInstruction.``data`The content of the processing instruction following the first whitespace character.
### 異常
The DOM Level 2 recommendation defines a single exception, [`DOMException`](#xml.dom.DOMException "xml.dom.DOMException"), and a number of constants that allow applications to determine what sort of error occurred. [`DOMException`](#xml.dom.DOMException "xml.dom.DOMException") instances carry a [`code`](code.xhtml#module-code "code: Facilities to implement read-eval-print loops.") attribute that provides the appropriate value for the specific exception.
The Python DOM interface provides the constants, but also expands the set of exceptions so that a specific exception exists for each of the exception codes defined by the DOM. The implementations must raise the appropriate specific exception, each of which carries the appropriate value for the [`code`](code.xhtml#module-code "code: Facilities to implement read-eval-print loops.")attribute.
*exception* `xml.dom.``DOMException`Base exception class used for all specific DOM exceptions. This exception class cannot be directly instantiated.
*exception* `xml.dom.``DomstringSizeErr`Raised when a specified range of text does not fit into a string. This is not known to be used in the Python DOM implementations, but may be received from DOM implementations not written in Python.
*exception* `xml.dom.``HierarchyRequestErr`Raised when an attempt is made to insert a node where the node type is not allowed.
*exception* `xml.dom.``IndexSizeErr`Raised when an index or size parameter to a method is negative or exceeds the allowed values.
*exception* `xml.dom.``InuseAttributeErr`Raised when an attempt is made to insert an `Attr` node that is already present elsewhere in the document.
*exception* `xml.dom.``InvalidAccessErr`Raised if a parameter or an operation is not supported on the underlying object.
*exception* `xml.dom.``InvalidCharacterErr`This exception is raised when a string parameter contains a character that is not permitted in the context it's being used in by the XML 1.0 recommendation. For example, attempting to create an `Element` node with a space in the element type name will cause this error to be raised.
*exception* `xml.dom.``InvalidModificationErr`Raised when an attempt is made to modify the type of a node.
*exception* `xml.dom.``InvalidStateErr`Raised when an attempt is made to use an object that is not defined or is no longer usable.
*exception* `xml.dom.``NamespaceErr`If an attempt is made to change any object in a way that is not permitted with regard to the [Namespaces in XML](https://www.w3.org/TR/REC-xml-names/) \[https://www.w3.org/TR/REC-xml-names/\]recommendation, this exception is raised.
*exception* `xml.dom.``NotFoundErr`Exception when a node does not exist in the referenced context. For example, `NamedNodeMap.removeNamedItem()` will raise this if the node passed in does not exist in the map.
*exception* `xml.dom.``NotSupportedErr`Raised when the implementation does not support the requested type of object or operation.
*exception* `xml.dom.``NoDataAllowedErr`This is raised if data is specified for a node which does not support data.
*exception* `xml.dom.``NoModificationAllowedErr`Raised on attempts to modify an object where modifications are not allowed (such as for read-only nodes).
*exception* `xml.dom.``SyntaxErr`Raised when an invalid or illegal string is specified.
*exception* `xml.dom.``WrongDocumentErr`Raised when a node is inserted in a different document than it currently belongs to, and the implementation does not support migrating the node from one document to the other.
The exception codes defined in the DOM recommendation map to the exceptions described above according to this table:
常數
Exception
`DOMSTRING_SIZE_ERR`
[`DomstringSizeErr`](#xml.dom.DomstringSizeErr "xml.dom.DomstringSizeErr")
`HIERARCHY_REQUEST_ERR`
[`HierarchyRequestErr`](#xml.dom.HierarchyRequestErr "xml.dom.HierarchyRequestErr")
`INDEX_SIZE_ERR`
[`IndexSizeErr`](#xml.dom.IndexSizeErr "xml.dom.IndexSizeErr")
`INUSE_ATTRIBUTE_ERR`
[`InuseAttributeErr`](#xml.dom.InuseAttributeErr "xml.dom.InuseAttributeErr")
`INVALID_ACCESS_ERR`
[`InvalidAccessErr`](#xml.dom.InvalidAccessErr "xml.dom.InvalidAccessErr")
`INVALID_CHARACTER_ERR`
[`InvalidCharacterErr`](#xml.dom.InvalidCharacterErr "xml.dom.InvalidCharacterErr")
`INVALID_MODIFICATION_ERR`
[`InvalidModificationErr`](#xml.dom.InvalidModificationErr "xml.dom.InvalidModificationErr")
`INVALID_STATE_ERR`
[`InvalidStateErr`](#xml.dom.InvalidStateErr "xml.dom.InvalidStateErr")
`NAMESPACE_ERR`
[`NamespaceErr`](#xml.dom.NamespaceErr "xml.dom.NamespaceErr")
`NOT_FOUND_ERR`
[`NotFoundErr`](#xml.dom.NotFoundErr "xml.dom.NotFoundErr")
`NOT_SUPPORTED_ERR`
[`NotSupportedErr`](#xml.dom.NotSupportedErr "xml.dom.NotSupportedErr")
`NO_DATA_ALLOWED_ERR`
[`NoDataAllowedErr`](#xml.dom.NoDataAllowedErr "xml.dom.NoDataAllowedErr")
`NO_MODIFICATION_ALLOWED_ERR`
[`NoModificationAllowedErr`](#xml.dom.NoModificationAllowedErr "xml.dom.NoModificationAllowedErr")
`SYNTAX_ERR`
[`SyntaxErr`](#xml.dom.SyntaxErr "xml.dom.SyntaxErr")
`WRONG_DOCUMENT_ERR`
[`WrongDocumentErr`](#xml.dom.WrongDocumentErr "xml.dom.WrongDocumentErr")
## Conformance
This section describes the conformance requirements and relationships between the Python DOM API, the W3C DOM recommendations, and the OMG IDL mapping for Python.
### Type Mapping
The IDL types used in the DOM specification are mapped to Python types according to the following table.
IDL Type
Python Type
`boolean`
`bool` or `int`
`int`
`int`
`long int`
`int`
`unsigned int`
`int`
`DOMString`
`str` or `bytes`
`null`
`None`
### Accessor Methods
The mapping from OMG IDL to Python defines accessor functions for IDL `attribute` declarations in much the way the Java mapping does. Mapping the IDL declarations
```
readonly attribute string someValue;
attribute string anotherValue;
```
yields three accessor functions: a "get" method for `someValue`(`_get_someValue()`), and "get" and "set" methods for `anotherValue`(`_get_anotherValue()` and `_set_anotherValue()`). The mapping, in particular, does not require that the IDL attributes are accessible as normal Python attributes: `object.someValue` is *not* required to work, and may raise an [`AttributeError`](exceptions.xhtml#AttributeError "AttributeError").
The Python DOM API, however, *does* require that normal attribute access work. This means that the typical surrogates generated by Python IDL compilers are not likely to work, and wrapper objects may be needed on the client if the DOM objects are accessed via CORBA. While this does require some additional consideration for CORBA DOM clients, the implementers with experience using DOM over CORBA from Python do not consider this a problem. Attributes that are declared `readonly` may not restrict write access in all DOM implementations.
In the Python DOM API, accessor functions are not required. If provided, they should take the form defined by the Python IDL mapping, but these methods are considered unnecessary since the attributes are accessible directly from Python. "Set" accessors should never be provided for `readonly` attributes.
The IDL definitions do not fully embody the requirements of the W3C DOM API, such as the notion of certain objects, such as the return value of `getElementsByTagName()`, being "live". The Python DOM API does not require implementations to enforce such requirements.
### 導航
- [索引](../genindex.xhtml "總目錄")
- [模塊](../py-modindex.xhtml "Python 模塊索引") |
- [下一頁](xml.dom.minidom.xhtml "xml.dom.minidom --- Minimal DOM implementation") |
- [上一頁](xml.etree.elementtree.xhtml "xml.etree.ElementTree --- The ElementTree XML API") |
- 
- [Python](https://www.python.org/) ?
- zh\_CN 3.7.3 [文檔](../index.xhtml) ?
- [Python 標準庫](index.xhtml) ?
- [結構化標記處理工具](markup.xhtml) ?
- $('.inline-search').show(0); |
? [版權所有](../copyright.xhtml) 2001-2019, Python Software Foundation.
Python 軟件基金會是一個非盈利組織。 [請捐助。](https://www.python.org/psf/donations/)
最后更新于 5月 21, 2019. [發現了問題](../bugs.xhtml)？
使用[Sphinx](http://sphinx.pocoo.org/)1.8.4 創建。
- Python文檔內容
- Python 有什么新變化？
- Python 3.7 有什么新變化
- 摘要 - 發布重點
- 新的特性
- 其他語言特性修改
- 新增模塊
- 改進的模塊
- C API 的改變
- 構建的改變
- 性能優化
- 其他 CPython 實現的改變
- 已棄用的 Python 行為
- 已棄用的 Python 模塊、函數和方法
- 已棄用的 C API 函數和類型
- 平臺支持的移除
- API 與特性的移除
- 移除的模塊
- Windows 專屬的改變
- 移植到 Python 3.7
- Python 3.7.1 中的重要變化
- Python 3.7.2 中的重要變化
- Python 3.6 有什么新變化A
- 摘要 - 發布重點
- 新的特性
- 其他語言特性修改
- 新增模塊
- 改進的模塊
- 性能優化
- Build and C API Changes
- 其他改進
- 棄用
- 移除
- 移植到Python 3.6
- Python 3.6.2 中的重要變化
- Python 3.6.4 中的重要變化
- Python 3.6.5 中的重要變化
- Python 3.6.7 中的重要變化
- Python 3.5 有什么新變化
- 摘要 - 發布重點
- 新的特性
- 其他語言特性修改
- 新增模塊
- 改進的模塊
- Other module-level changes
- 性能優化
- Build and C API Changes
- 棄用
- 移除
- Porting to Python 3.5
- Notable changes in Python 3.5.4
- What's New In Python 3.4
- 摘要 - 發布重點
- 新的特性
- 新增模塊
- 改進的模塊
- CPython Implementation Changes
- 棄用
- 移除
- Porting to Python 3.4
- Changed in 3.4.3
- What's New In Python 3.3
- 摘要 - 發布重點
- PEP 405: Virtual Environments
- PEP 420: Implicit Namespace Packages
- PEP 3118: New memoryview implementation and buffer protocol documentation
- PEP 393: Flexible String Representation
- PEP 397: Python Launcher for Windows
- PEP 3151: Reworking the OS and IO exception hierarchy
- PEP 380: Syntax for Delegating to a Subgenerator
- PEP 409: Suppressing exception context
- PEP 414: Explicit Unicode literals
- PEP 3155: Qualified name for classes and functions
- PEP 412: Key-Sharing Dictionary
- PEP 362: Function Signature Object
- PEP 421: Adding sys.implementation
- Using importlib as the Implementation of Import
- 其他語言特性修改
- A Finer-Grained Import Lock
- Builtin functions and types
- 新增模塊
- 改進的模塊
- 性能優化
- Build and C API Changes
- 棄用
- Porting to Python 3.3
- What's New In Python 3.2
- PEP 384: Defining a Stable ABI
- PEP 389: Argparse Command Line Parsing Module
- PEP 391: Dictionary Based Configuration for Logging
- PEP 3148: The concurrent.futures module
- PEP 3147: PYC Repository Directories
- PEP 3149: ABI Version Tagged .so Files
- PEP 3333: Python Web Server Gateway Interface v1.0.1
- 其他語言特性修改
- New, Improved, and Deprecated Modules
- 多線程
- 性能優化
- Unicode
- Codecs
- 文檔
- IDLE
- Code Repository
- Build and C API Changes
- Porting to Python 3.2
- What's New In Python 3.1
- PEP 372: Ordered Dictionaries
- PEP 378: Format Specifier for Thousands Separator
- 其他語言特性修改
- New, Improved, and Deprecated Modules
- 性能優化
- IDLE
- Build and C API Changes
- Porting to Python 3.1
- What's New In Python 3.0
- Common Stumbling Blocks
- Overview Of Syntax Changes
- Changes Already Present In Python 2.6
- Library Changes
- PEP 3101: A New Approach To String Formatting
- Changes To Exceptions
- Miscellaneous Other Changes
- Build and C API Changes
- 性能
- Porting To Python 3.0
- What's New in Python 2.7
- The Future for Python 2.x
- Changes to the Handling of Deprecation Warnings
- Python 3.1 Features
- PEP 372: Adding an Ordered Dictionary to collections
- PEP 378: Format Specifier for Thousands Separator
- PEP 389: The argparse Module for Parsing Command Lines
- PEP 391: Dictionary-Based Configuration For Logging
- PEP 3106: Dictionary Views
- PEP 3137: The memoryview Object
- 其他語言特性修改
- New and Improved Modules
- Build and C API Changes
- Other Changes and Fixes
- Porting to Python 2.7
- New Features Added to Python 2.7 Maintenance Releases
- Acknowledgements
- Python 2.6 有什么新變化
- Python 3.0
- Changes to the Development Process
- PEP 343: The 'with' statement
- PEP 366: Explicit Relative Imports From a Main Module
- PEP 370: Per-user site-packages Directory
- PEP 371: The multiprocessing Package
- PEP 3101: Advanced String Formatting
- PEP 3105: print As a Function
- PEP 3110: Exception-Handling Changes
- PEP 3112: Byte Literals
- PEP 3116: New I/O Library
- PEP 3118: Revised Buffer Protocol
- PEP 3119: Abstract Base Classes
- PEP 3127: Integer Literal Support and Syntax
- PEP 3129: Class Decorators
- PEP 3141: A Type Hierarchy for Numbers
- 其他語言特性修改
- New and Improved Modules
- Deprecations and Removals
- Build and C API Changes
- Porting to Python 2.6
- Acknowledgements
- What's New in Python 2.5
- PEP 308: Conditional Expressions
- PEP 309: Partial Function Application
- PEP 314: Metadata for Python Software Packages v1.1
- PEP 328: Absolute and Relative Imports
- PEP 338: Executing Modules as Scripts
- PEP 341: Unified try/except/finally
- PEP 342: New Generator Features
- PEP 343: The 'with' statement
- PEP 352: Exceptions as New-Style Classes
- PEP 353: Using ssize_t as the index type
- PEP 357: The 'index' method
- 其他語言特性修改
- New, Improved, and Removed Modules
- Build and C API Changes
- Porting to Python 2.5
- Acknowledgements
- What's New in Python 2.4
- PEP 218: Built-In Set Objects
- PEP 237: Unifying Long Integers and Integers
- PEP 289: Generator Expressions
- PEP 292: Simpler String Substitutions
- PEP 318: Decorators for Functions and Methods
- PEP 322: Reverse Iteration
- PEP 324: New subprocess Module
- PEP 327: Decimal Data Type
- PEP 328: Multi-line Imports
- PEP 331: Locale-Independent Float/String Conversions
- 其他語言特性修改
- New, Improved, and Deprecated Modules
- Build and C API Changes
- Porting to Python 2.4
- Acknowledgements
- What's New in Python 2.3
- PEP 218: A Standard Set Datatype
- PEP 255: Simple Generators
- PEP 263: Source Code Encodings
- PEP 273: Importing Modules from ZIP Archives
- PEP 277: Unicode file name support for Windows NT
- PEP 278: Universal Newline Support
- PEP 279: enumerate()
- PEP 282: The logging Package
- PEP 285: A Boolean Type
- PEP 293: Codec Error Handling Callbacks
- PEP 301: Package Index and Metadata for Distutils
- PEP 302: New Import Hooks
- PEP 305: Comma-separated Files
- PEP 307: Pickle Enhancements
- Extended Slices
- 其他語言特性修改
- New, Improved, and Deprecated Modules
- Pymalloc: A Specialized Object Allocator
- Build and C API Changes
- Other Changes and Fixes
- Porting to Python 2.3
- Acknowledgements
- What's New in Python 2.2
- 概述
- PEPs 252 and 253: Type and Class Changes
- PEP 234: Iterators
- PEP 255: Simple Generators
- PEP 237: Unifying Long Integers and Integers
- PEP 238: Changing the Division Operator
- Unicode Changes
- PEP 227: Nested Scopes
- New and Improved Modules
- Interpreter Changes and Fixes
- Other Changes and Fixes
- Acknowledgements
- What's New in Python 2.1
- 概述
- PEP 227: Nested Scopes
- PEP 236: future Directives
- PEP 207: Rich Comparisons
- PEP 230: Warning Framework
- PEP 229: New Build System
- PEP 205: Weak References
- PEP 232: Function Attributes
- PEP 235: Importing Modules on Case-Insensitive Platforms
- PEP 217: Interactive Display Hook
- PEP 208: New Coercion Model
- PEP 241: Metadata in Python Packages
- New and Improved Modules
- Other Changes and Fixes
- Acknowledgements
- What's New in Python 2.0
- 概述
- What About Python 1.6?
- New Development Process
- Unicode
- 列表推導式
- Augmented Assignment
- 字符串的方法
- Garbage Collection of Cycles
- Other Core Changes
- Porting to 2.0
- Extending/Embedding Changes
- Distutils: Making Modules Easy to Install
- XML Modules
- Module changes
- New modules
- IDLE Improvements
- Deleted and Deprecated Modules
- Acknowledgements
- 更新日志
- Python 下一版
- Python 3.7.3 最終版
- Python 3.7.3 發布候選版 1
- Python 3.7.2 最終版
- Python 3.7.2 發布候選版 1
- Python 3.7.1 最終版
- Python 3.7.1 RC 2版本
- Python 3.7.1 發布候選版 1
- Python 3.7.0 正式版
- Python 3.7.0 release candidate 1
- Python 3.7.0 beta 5
- Python 3.7.0 beta 4
- Python 3.7.0 beta 3
- Python 3.7.0 beta 2
- Python 3.7.0 beta 1
- Python 3.7.0 alpha 4
- Python 3.7.0 alpha 3
- Python 3.7.0 alpha 2
- Python 3.7.0 alpha 1
- Python 3.6.6 final
- Python 3.6.6 RC 1
- Python 3.6.5 final
- Python 3.6.5 release candidate 1
- Python 3.6.4 final
- Python 3.6.4 release candidate 1
- Python 3.6.3 final
- Python 3.6.3 release candidate 1
- Python 3.6.2 final
- Python 3.6.2 release candidate 2
- Python 3.6.2 release candidate 1
- Python 3.6.1 final
- Python 3.6.1 release candidate 1
- Python 3.6.0 final
- Python 3.6.0 release candidate 2
- Python 3.6.0 release candidate 1
- Python 3.6.0 beta 4
- Python 3.6.0 beta 3
- Python 3.6.0 beta 2
- Python 3.6.0 beta 1
- Python 3.6.0 alpha 4
- Python 3.6.0 alpha 3
- Python 3.6.0 alpha 2
- Python 3.6.0 alpha 1
- Python 3.5.5 final
- Python 3.5.5 release candidate 1
- Python 3.5.4 final
- Python 3.5.4 release candidate 1
- Python 3.5.3 final
- Python 3.5.3 release candidate 1
- Python 3.5.2 final
- Python 3.5.2 release candidate 1
- Python 3.5.1 final
- Python 3.5.1 release candidate 1
- Python 3.5.0 final
- Python 3.5.0 release candidate 4
- Python 3.5.0 release candidate 3
- Python 3.5.0 release candidate 2
- Python 3.5.0 release candidate 1
- Python 3.5.0 beta 4
- Python 3.5.0 beta 3
- Python 3.5.0 beta 2
- Python 3.5.0 beta 1
- Python 3.5.0 alpha 4
- Python 3.5.0 alpha 3
- Python 3.5.0 alpha 2
- Python 3.5.0 alpha 1
- Python 教程
- 課前甜點
- 使用 Python 解釋器
- 調用解釋器
- 解釋器的運行環境
- Python 的非正式介紹
- Python 作為計算器使用
- 走向編程的第一步
- 其他流程控制工具
- if 語句
- for 語句
- range() 函數
- break 和 continue 語句，以及循環中的 else 子句
- pass 語句
- 定義函數
- 函數定義的更多形式
- 小插曲：編碼風格
- 數據結構
- 列表的更多特性
- del 語句
- 元組和序列
- 集合
- 字典
- 循環的技巧
- 深入條件控制
- 序列和其它類型的比較
- 模塊
- 有關模塊的更多信息
- 標準模塊
- dir() 函數
- 包
- 輸入輸出
- 更漂亮的輸出格式
- 讀寫文件
- 錯誤和異常
- 語法錯誤
- 異常
- 處理異常
- 拋出異常
- 用戶自定義異常
- 定義清理操作
- 預定義的清理操作
- 類
- 名稱和對象
- Python 作用域和命名空間
- 初探類
- 補充說明
- 繼承
- 私有變量
- 雜項說明
- 迭代器
- 生成器
- 生成器表達式
- 標準庫簡介
- 操作系統接口
- 文件通配符
- 命令行參數
- 錯誤輸出重定向和程序終止
- 字符串模式匹配
- 數學
- 互聯網訪問
- 日期和時間
- 數據壓縮
- 性能測量
- 質量控制
- 自帶電池
- 標準庫簡介 —— 第二部分
- 格式化輸出
- 模板
- 使用二進制數據記錄格式
- 多線程
- 日志
- 弱引用
- 用于操作列表的工具
- 十進制浮點運算
- 虛擬環境和包
- 概述
- 創建虛擬環境
- 使用pip管理包
- 接下來？
- 交互式編輯和編輯歷史
- Tab 補全和編輯歷史
- 默認交互式解釋器的替代品
- 浮點算術：爭議和限制
- 表示性錯誤
- 附錄
- 交互模式
- 安裝和使用 Python
- 命令行與環境
- 命令行
- 環境變量
- 在Unix平臺中使用Python
- 獲取最新版本的Python
- 構建Python
- 與Python相關的路徑和文件
- 雜項
- 編輯器和集成開發環境
- 在Windows上使用 Python
- 完整安裝程序
- Microsoft Store包
- nuget.org 安裝包
- 可嵌入的包
- 替代捆綁包
- 配置Python
- 適用于Windows的Python啟動器
- 查找模塊
- 附加模塊
- 在Windows上編譯Python
- 其他平臺
- 在蘋果系統上使用 Python
- 獲取和安裝 MacPython
- IDE
- 安裝額外的 Python 包
- Mac 上的圖形界面編程
- 在 Mac 上分發 Python 應用程序
- 其他資源
- Python 語言參考
- 概述
- 其他實現
- 標注
- 詞法分析
- 行結構
- 其他形符
- 標識符和關鍵字
- 字面值
- 運算符
- 分隔符
- 數據模型
- 對象、值與類型
- 標準類型層級結構
- 特殊方法名稱
- 協程
- 執行模型
- 程序的結構
- 命名與綁定
- 異常
- 導入系統
- importlib
- 包
- 搜索
- 加載
- 基于路徑的查找器
- 替換標準導入系統
- Package Relative Imports
- 有關 main 的特殊事項
- 開放問題項
- 參考文獻
- 表達式
- 算術轉換
- 原子
- 原型
- await 表達式
- 冪運算符
- 一元算術和位運算
- 二元算術運算符
- 移位運算
- 二元位運算
- 比較運算
- 布爾運算
- 條件表達式
- lambda 表達式
- 表達式列表
- 求值順序
- 運算符優先級
- 簡單語句
- 表達式語句
- 賦值語句
- assert 語句
- pass 語句
- del 語句
- return 語句
- yield 語句
- raise 語句
- break 語句
- continue 語句
- import 語句
- global 語句
- nonlocal 語句
- 復合語句
- if 語句
- while 語句
- for 語句
- try 語句
- with 語句
- 函數定義
- 類定義
- 協程
- 最高層級組件
- 完整的 Python 程序
- 文件輸入
- 交互式輸入
- 表達式輸入
- 完整的語法規范
- Python 標準庫
- 概述
- 可用性注釋
- 內置函數
- 內置常量
- 由 site 模塊添加的常量
- 內置類型
- 邏輯值檢測
- 布爾運算 — and, or, not
- 比較
- 數字類型 — int, float, complex
- 迭代器類型
- 序列類型 — list, tuple, range
- 文本序列類型 — str
- 二進制序列類型 — bytes, bytearray, memoryview
- 集合類型 — set, frozenset
- 映射類型 — dict
- 上下文管理器類型
- 其他內置類型
- 特殊屬性
- 內置異常
- 基類
- 具體異常
- 警告
- 異常層次結構
- 文本處理服務
- string — 常見的字符串操作
- re — 正則表達式操作
- 模塊 difflib 是一個計算差異的助手
- textwrap — Text wrapping and filling
- unicodedata — Unicode 數據庫
- stringprep — Internet String Preparation
- readline — GNU readline interface
- rlcompleter — GNU readline的完成函數
- 二進制數據服務
- struct — Interpret bytes as packed binary data
- codecs — Codec registry and base classes
- 數據類型
- datetime — 基礎日期/時間數據類型
- calendar — General calendar-related functions
- collections — 容器數據類型
- collections.abc — 容器的抽象基類
- heapq — 堆隊列算法
- bisect — Array bisection algorithm
- array — Efficient arrays of numeric values
- weakref — 弱引用
- types — Dynamic type creation and names for built-in types
- copy — 淺層 (shallow) 和深層 (deep) 復制操作
- pprint — 數據美化輸出
- reprlib — Alternate repr() implementation
- enum — Support for enumerations
- 數字和數學模塊
- numbers — 數字的抽象基類
- math — 數學函數
- cmath — Mathematical functions for complex numbers
- decimal — 十進制定點和浮點運算
- fractions — 分數
- random — 生成偽隨機數
- statistics — Mathematical statistics functions
- 函數式編程模塊
- itertools — 為高效循環而創建迭代器的函數
- functools — 高階函數和可調用對象上的操作
- operator — 標準運算符替代函數
- 文件和目錄訪問
- pathlib — 面向對象的文件系統路徑
- os.path — 常見路徑操作
- fileinput — Iterate over lines from multiple input streams
- stat — Interpreting stat() results
- filecmp — File and Directory Comparisons
- tempfile — Generate temporary files and directories
- glob — Unix style pathname pattern expansion
- fnmatch — Unix filename pattern matching
- linecache — Random access to text lines
- shutil — High-level file operations
- macpath — Mac OS 9 路徑操作函數
- 數據持久化
- pickle —— Python 對象序列化
- copyreg — Register pickle support functions
- shelve — Python object persistence
- marshal — Internal Python object serialization
- dbm — Interfaces to Unix “databases”
- sqlite3 — SQLite 數據庫 DB-API 2.0 接口模塊
- 數據壓縮和存檔
- zlib — 與 gzip 兼容的壓縮
- gzip — 對 gzip 格式的支持
- bz2 — 對 bzip2 壓縮算法的支持
- lzma — 用 LZMA 算法壓縮
- zipfile — 在 ZIP 歸檔中工作
- tarfile — Read and write tar archive files
- 文件格式
- csv — CSV 文件讀寫
- configparser — Configuration file parser
- netrc — netrc file processing
- xdrlib — Encode and decode XDR data
- plistlib — Generate and parse Mac OS X .plist files
- 加密服務
- hashlib — 安全哈希與消息摘要
- hmac — 基于密鑰的消息驗證
- secrets — Generate secure random numbers for managing secrets
- 通用操作系統服務
- os — 操作系統接口模塊
- io — 處理流的核心工具
- time — 時間的訪問和轉換
- argparse — 命令行選項、參數和子命令解析器
- getopt — C-style parser for command line options
- 模塊 logging — Python 的日志記錄工具
- logging.config — 日志記錄配置
- logging.handlers — Logging handlers
- getpass — 便攜式密碼輸入工具
- curses — 終端字符單元顯示的處理
- curses.textpad — Text input widget for curses programs
- curses.ascii — Utilities for ASCII characters
- curses.panel — A panel stack extension for curses
- platform — Access to underlying platform's identifying data
- errno — Standard errno system symbols
- ctypes — Python 的外部函數庫
- 并發執行
- threading — 基于線程的并行
- multiprocessing — 基于進程的并行
- concurrent 包
- concurrent.futures — 啟動并行任務
- subprocess — 子進程管理
- sched — 事件調度器
- queue — 一個同步的隊列類
- _thread — 底層多線程 API
- _dummy_thread — _thread 的替代模塊
- dummy_threading — 可直接替代 threading 模塊。
- contextvars — Context Variables
- Context Variables
- Manual Context Management
- asyncio support
- 網絡和進程間通信
- asyncio — 異步 I/O
- socket — 底層網絡接口
- ssl — TLS/SSL wrapper for socket objects
- select — Waiting for I/O completion
- selectors — 高級 I/O 復用庫
- asyncore — 異步socket處理器
- asynchat — 異步 socket 指令/響應 處理器
- signal — Set handlers for asynchronous events
- mmap — Memory-mapped file support
- 互聯網數據處理
- email — 電子郵件與 MIME 處理包
- json — JSON 編碼和解碼器
- mailcap — Mailcap file handling
- mailbox — Manipulate mailboxes in various formats
- mimetypes — Map filenames to MIME types
- base64 — Base16, Base32, Base64, Base85 數據編碼
- binhex — 對binhex4文件進行編碼和解碼
- binascii — 二進制和 ASCII 碼互轉
- quopri — Encode and decode MIME quoted-printable data
- uu — Encode and decode uuencode files
- 結構化標記處理工具
- html — 超文本標記語言支持
- html.parser — 簡單的 HTML 和 XHTML 解析器
- html.entities — HTML 一般實體的定義
- XML處理模塊
- xml.etree.ElementTree — The ElementTree XML API
- xml.dom — The Document Object Model API
- xml.dom.minidom — Minimal DOM implementation
- xml.dom.pulldom — Support for building partial DOM trees
- xml.sax — Support for SAX2 parsers
- xml.sax.handler — Base classes for SAX handlers
- xml.sax.saxutils — SAX Utilities
- xml.sax.xmlreader — Interface for XML parsers
- xml.parsers.expat — Fast XML parsing using Expat
- 互聯網協議和支持
- webbrowser — 方便的Web瀏覽器控制器
- cgi — Common Gateway Interface support
- cgitb — Traceback manager for CGI scripts
- wsgiref — WSGI Utilities and Reference Implementation
- urllib — URL 處理模塊
- urllib.request — 用于打開 URL 的可擴展庫
- urllib.response — Response classes used by urllib
- urllib.parse — Parse URLs into components
- urllib.error — Exception classes raised by urllib.request
- urllib.robotparser — Parser for robots.txt
- http — HTTP 模塊
- http.client — HTTP協議客戶端
- ftplib — FTP protocol client
- poplib — POP3 protocol client
- imaplib — IMAP4 protocol client
- nntplib — NNTP protocol client
- smtplib —SMTP協議客戶端
- smtpd — SMTP Server
- telnetlib — Telnet client
- uuid — UUID objects according to RFC 4122
- socketserver — A framework for network servers
- http.server — HTTP 服務器
- http.cookies — HTTP state management
- http.cookiejar — Cookie handling for HTTP clients
- xmlrpc — XMLRPC 服務端與客戶端模塊
- xmlrpc.client — XML-RPC client access
- xmlrpc.server — Basic XML-RPC servers
- ipaddress — IPv4/IPv6 manipulation library
- 多媒體服務
- audioop — Manipulate raw audio data
- aifc — Read and write AIFF and AIFC files
- sunau — 讀寫 Sun AU 文件
- wave — 讀寫WAV格式文件
- chunk — Read IFF chunked data
- colorsys — Conversions between color systems
- imghdr — 推測圖像類型
- sndhdr — 推測聲音文件的類型
- ossaudiodev — Access to OSS-compatible audio devices
- 國際化
- gettext — 多語種國際化服務
- locale — 國際化服務
- 程序框架
- turtle — 海龜繪圖
- cmd — 支持面向行的命令解釋器
- shlex — Simple lexical analysis
- Tk圖形用戶界面(GUI)
- tkinter — Tcl/Tk的Python接口
- tkinter.ttk — Tk themed widgets
- tkinter.tix — Extension widgets for Tk
- tkinter.scrolledtext — 滾動文字控件
- IDLE
- 其他圖形用戶界面（GUI）包
- 開發工具
- typing — 類型標注支持
- pydoc — Documentation generator and online help system
- doctest — Test interactive Python examples
- unittest — 單元測試框架
- unittest.mock — mock object library
- unittest.mock 上手指南
- 2to3 - 自動將 Python 2 代碼轉為 Python 3 代碼
- test — Regression tests package for Python
- test.support — Utilities for the Python test suite
- test.support.script_helper — Utilities for the Python execution tests
- 調試和分析
- bdb — Debugger framework
- faulthandler — Dump the Python traceback
- pdb — The Python Debugger
- The Python Profilers
- timeit — 測量小代碼片段的執行時間
- trace — Trace or track Python statement execution
- tracemalloc — Trace memory allocations
- 軟件打包和分發
- distutils — 構建和安裝 Python 模塊
- ensurepip — Bootstrapping the pip installer
- venv — 創建虛擬環境
- zipapp — Manage executable Python zip archives
- Python運行時服務
- sys — 系統相關的參數和函數
- sysconfig — Provide access to Python's configuration information
- builtins — 內建對象
- main — 頂層腳本環境
- warnings — Warning control
- dataclasses — 數據類
- contextlib — Utilities for with-statement contexts
- abc — 抽象基類
- atexit — 退出處理器
- traceback — Print or retrieve a stack traceback
- future — Future 語句定義
- gc — 垃圾回收器接口
- inspect — 檢查對象
- site — Site-specific configuration hook
- 自定義 Python 解釋器
- code — Interpreter base classes
- codeop — Compile Python code
- 導入模塊
- zipimport — Import modules from Zip archives
- pkgutil — Package extension utility
- modulefinder — 查找腳本使用的模塊
- runpy — Locating and executing Python modules
- importlib — The implementation of import
- Python 語言服務
- parser — Access Python parse trees
- ast — 抽象語法樹
- symtable — Access to the compiler's symbol tables
- symbol — 與 Python 解析樹一起使用的常量
- token — 與Python解析樹一起使用的常量
- keyword — 檢驗Python關鍵字
- tokenize — Tokenizer for Python source
- tabnanny — 模糊縮進檢測
- pyclbr — Python class browser support
- py_compile — Compile Python source files
- compileall — Byte-compile Python libraries
- dis — Python 字節碼反匯編器
- pickletools — Tools for pickle developers
- 雜項服務
- formatter — Generic output formatting
- Windows系統相關模塊
- msilib — Read and write Microsoft Installer files
- msvcrt — Useful routines from the MS VC++ runtime
- winreg — Windows 注冊表訪問
- winsound — Sound-playing interface for Windows
- Unix 專有服務
- posix — The most common POSIX system calls
- pwd — 用戶密碼數據庫
- spwd — The shadow password database
- grp — The group database
- crypt — Function to check Unix passwords
- termios — POSIX style tty control
- tty — 終端控制功能
- pty — Pseudo-terminal utilities
- fcntl — The fcntl and ioctl system calls
- pipes — Interface to shell pipelines
- resource — Resource usage information
- nis — Interface to Sun's NIS (Yellow Pages)
- Unix syslog 庫例程
- 被取代的模塊
- optparse — Parser for command line options
- imp — Access the import internals
- 未創建文檔的模塊
- 平臺特定模塊
- 擴展和嵌入 Python 解釋器
- 推薦的第三方工具
- 不使用第三方工具創建擴展
- 使用 C 或 C++ 擴展 Python
- 自定義擴展類型：教程
- 定義擴展類型：已分類主題
- 構建C/C++擴展
- 在Windows平臺編譯C和C++擴展
- 在更大的應用程序中嵌入 CPython 運行時
- Embedding Python in Another Application
- Python/C API 參考手冊
- 概述
- 代碼標準
- 包含文件
- 有用的宏
- 對象、類型和引用計數
- 異常
- 嵌入Python
- 調試構建
- 穩定的應用程序二進制接口
- The Very High Level Layer
- Reference Counting
- 異常處理
- Printing and clearing
- 拋出異常
- Issuing warnings
- Querying the error indicator
- Signal Handling
- Exception Classes
- Exception Objects
- Unicode Exception Objects
- Recursion Control
- 標準異常
- 標準警告類別
- 工具
- 操作系統實用程序
- 系統功能
- 過程控制
- 導入模塊
- Data marshalling support
- 語句解釋及變量編譯
- 字符串轉換與格式化
- 反射
- 編解碼器注冊與支持功能
- 抽象對象層
- Object Protocol
- 數字協議
- Sequence Protocol
- Mapping Protocol
- 迭代器協議
- 緩沖協議
- Old Buffer Protocol
- 具體的對象層
- 基本對象
- 數值對象
- 序列對象
- 容器對象
- 函數對象
- 其他對象
- Initialization, Finalization, and Threads
- 在Python初始化之前
- 全局配置變量
- Initializing and finalizing the interpreter
- Process-wide parameters
- Thread State and the Global Interpreter Lock
- Sub-interpreter support
- Asynchronous Notifications
- Profiling and Tracing
- Advanced Debugger Support
- Thread Local Storage Support
- 內存管理
- 概述
- 原始內存接口
- Memory Interface
- 對象分配器
- 默認內存分配器
- Customize Memory Allocators
- The pymalloc allocator
- tracemalloc C API
- 示例
- 對象實現支持
- 在堆中分配對象
- Common Object Structures
- Type 對象
- Number Object Structures
- Mapping Object Structures
- Sequence Object Structures
- Buffer Object Structures
- Async Object Structures
- 使對象類型支持循環垃圾回收
- API 和 ABI 版本管理
- 分發 Python 模塊
- 關鍵術語
- 開源許可與協作
- 安裝工具
- 閱讀指南
- 我該如何...？
- ...為我的項目選擇一個名字？
- ...創建和分發二進制擴展？
- 安裝 Python 模塊
- 關鍵術語
- 基本使用
- 我應如何 ...？
- ... 在 Python 3.4 之前的 Python 版本中安裝 pip ？
- ... 只為當前用戶安裝軟件包？
- ... 安裝科學計算類 Python 軟件包？
- ... 使用并行安裝的多個 Python 版本？
- 常見的安裝問題
- 在 Linux 的系統 Python 版本上安裝
- 未安裝 pip
- 安裝二進制編譯擴展
- Python 常用指引
- 將 Python 2 代碼遷移到 Python 3
- 簡要說明
- 詳情
- 將擴展模塊移植到 Python 3
- 條件編譯
- 對象API的更改
- 模塊初始化和狀態
- CObject 替換為 Capsule
- 其他選項
- Curses Programming with Python
- What is curses?
- Starting and ending a curses application
- Windows and Pads
- Displaying Text
- User Input
- For More Information
- 實現描述器
- 摘要
- 定義和簡介
- 描述器協議
- 發起調用描述符
- 描述符示例
- Properties
- 函數和方法
- Static Methods and Class Methods
- 函數式編程指引
- 概述
- 迭代器
- 生成器表達式和列表推導式
- 生成器
- 內置函數
- itertools 模塊
- The functools module
- Small functions and the lambda expression
- Revision History and Acknowledgements
- 引用文獻
- 日志 HOWTO
- 日志基礎教程
- 進階日志教程
- 日志級別
- 有用的處理程序
- 記錄日志中引發的異常
- 使用任意對象作為消息
- 優化
- 日志操作手冊
- 在多個模塊中使用日志
- 在多線程中使用日志
- 使用多個日志處理器和多種格式化
- 在多個地方記錄日志
- 日志服務器配置示例
- 處理日志處理器的阻塞
- Sending and receiving logging events across a network
- Adding contextual information to your logging output
- Logging to a single file from multiple processes
- Using file rotation
- Use of alternative formatting styles
- Customizing LogRecord
- Subclassing QueueHandler - a ZeroMQ example
- Subclassing QueueListener - a ZeroMQ example
- An example dictionary-based configuration
- Using a rotator and namer to customize log rotation processing
- A more elaborate multiprocessing example
- Inserting a BOM into messages sent to a SysLogHandler
- Implementing structured logging
- Customizing handlers with dictConfig()
- Using particular formatting styles throughout your application
- Configuring filters with dictConfig()
- Customized exception formatting
- Speaking logging messages
- Buffering logging messages and outputting them conditionally
- Formatting times using UTC (GMT) via configuration
- Using a context manager for selective logging
- 正則表達式HOWTO
- 概述
- 簡單模式
- 使用正則表達式
- 更多模式能力
- 修改字符串
- 常見問題
- 反饋
- 套接字編程指南
- 套接字
- 創建套接字
- 使用一個套接字
- 斷開連接
- 非阻塞的套接字
- 排序指南
- 基本排序
- 關鍵函數
- Operator 模塊函數
- 升序和降序
- 排序穩定性和排序復雜度
- 使用裝飾-排序-去裝飾的舊方法
- 使用 cmp 參數的舊方法
- 其它
- Unicode 指南
- Unicode 概述
- Python's Unicode Support
- Reading and Writing Unicode Data
- Acknowledgements
- 如何使用urllib包獲取網絡資源
- 概述
- Fetching URLs
- 處理異常
- info and geturl
- Openers and Handlers
- Basic Authentication
- Proxies
- Sockets and Layers
- 腳注
- Argparse 教程
- 概念
- 基礎
- 位置參數介紹
- Introducing Optional arguments
- Combining Positional and Optional arguments
- Getting a little more advanced
- Conclusion
- ipaddress模塊介紹
- 創建 Address/Network/Interface 對象
- 審查 Address/Network/Interface 對象
- Network 作為 Address 列表
- 比較
- 將IP地址與其他模塊一起使用
- 實例創建失敗時獲取更多詳細信息
- Argument Clinic How-To
- The Goals Of Argument Clinic
- Basic Concepts And Usage
- Converting Your First Function
- Advanced Topics
- 使用 DTrace 和 SystemTap 檢測CPython
- Enabling the static markers
- Static DTrace probes
- Static SystemTap markers
- Available static markers
- SystemTap Tapsets
- 示例
- Python 常見問題
- Python常見問題
- 一般信息
- 現實世界中的 Python
- 編程常見問題
- 一般問題
- 核心語言
- 數字和字符串
- 性能
- 序列（元組/列表）
- 對象
- 模塊
- 設計和歷史常見問題
- 為什么Python使用縮進來分組語句？
- 為什么簡單的算術運算得到奇怪的結果？
- 為什么浮點計算不準確？
- 為什么Python字符串是不可變的？
- 為什么必須在方法定義和調用中顯式使用“self”？
- 為什么不能在表達式中賦值？
- 為什么Python對某些功能（例如list.index()）使用方法來實現，而其他功能（例如len(List)）使用函數實現？
- 為什么 join()是一個字符串方法而不是列表或元組方法？
- 異常有多快？
- 為什么Python中沒有switch或case語句？
- 難道不能在解釋器中模擬線程，而非得依賴特定于操作系統的線程實現嗎？
- 為什么lambda表達式不能包含語句？
- 可以將Python編譯為機器代碼，C或其他語言嗎？
- Python如何管理內存？
- 為什么CPython不使用更傳統的垃圾回收方案？
- CPython退出時為什么不釋放所有內存？
- 為什么有單獨的元組和列表數據類型？
- 列表是如何在CPython中實現的？
- 字典是如何在CPython中實現的？
- 為什么字典key必須是不可變的？
- 為什么 list.sort() 沒有返回排序列表？
- 如何在Python中指定和實施接口規范？
- 為什么沒有goto？
- 為什么原始字符串（r-strings）不能以反斜杠結尾？
- 為什么Python沒有屬性賦值的“with”語句？
- 為什么 if/while/def/class語句需要冒號？
- 為什么Python在列表和元組的末尾允許使用逗號？
- 代碼庫和插件 FAQ
- 通用的代碼庫問題
- 通用任務
- 線程相關
- 輸入輸出
- 網絡 / Internet 編程
- 數據庫
- 數學和數字
- 擴展/嵌入常見問題
- 可以使用C語言中創建自己的函數嗎？
- 可以使用C++語言中創建自己的函數嗎？
- C很難寫，有沒有其他選擇？
- 如何從C執行任意Python語句？
- 如何從C中評估任意Python表達式？
- 如何從Python對象中提取C的值？
- 如何使用Py_BuildValue()創建任意長度的元組？
- 如何從C調用對象的方法？
- 如何捕獲PyErr_Print()（或打印到stdout / stderr的任何內容）的輸出？
- 如何從C訪問用Python編寫的模塊？
- 如何從Python接口到C ++對象？
- 我使用Setup文件添加了一個模塊，為什么make失敗了？
- 如何調試擴展？
- 我想在Linux系統上編譯一個Python模塊，但是缺少一些文件。為什么?
- 如何區分“輸入不完整”和“輸入無效”？
- 如何找到未定義的g++符號__builtin_new或__pure_virtual？
- 能否創建一個對象類，其中部分方法在C中實現，而其他方法在Python中實現（例如通過繼承）？
- Python在Windows上的常見問題
- 我怎樣在Windows下運行一個Python程序？
- 我怎么讓 Python 腳本可執行？
- 為什么有時候 Python 程序會啟動緩慢？
- 我怎樣使用Python腳本制作可執行文件？
- *.pyd 文件和DLL文件相同嗎？
- 我怎樣將Python嵌入一個Windows程序？
- 如何讓編輯器不要在我的 Python 源代碼中插入 tab ？
- 如何在不阻塞的情況下檢查按鍵？
- 圖形用戶界面（GUI）常見問題
- 圖形界面常見問題
- Python 是否有平臺無關的圖形界面工具包？
- 有哪些Python的GUI工具是某個平臺專用的？
- 有關Tkinter的問題
- “為什么我的電腦上安裝了 Python ？”
- 什么是Python？
- 為什么我的電腦上安裝了 Python ？
- 我能刪除 Python 嗎？
- 術語對照表
- 文檔說明
- Python 文檔貢獻者
- 解決 Bug
- 文檔錯誤
- 使用 Python 的錯誤追蹤系統
- 開始為 Python 貢獻您的知識
- 版權
- 歷史和許可證
- 軟件歷史
- 訪問Python或以其他方式使用Python的條款和條件
- Python 3.7.3 的 PSF 許可協議
- Python 2.0 的 BeOpen.com 許可協議
- Python 1.6.1 的 CNRI 許可協議
- Python 0.9.0 至 1.2 的 CWI 許可協議
- 集成軟件的許可和認可
- Mersenne Twister
- 套接字
- Asynchronous socket services
- Cookie management
- Execution tracing
- UUencode and UUdecode functions
- XML Remote Procedure Calls
- test_epoll
- Select kqueue
- SipHash24
- strtod and dtoa
- OpenSSL
- expat
- libffi
- zlib
- cfuhash
- libmpdec