Python 語言參考 · Python3.7.3官方文檔簡體中文

### 導航 - [索引](../genindex.xhtml "總目錄") - [模塊](../py-modindex.xhtml "Python 模塊索引") | - [下一頁](introduction.xhtml "1. 概述") | - [上一頁](../using/mac.xhtml "4. 在蘋果系統上使用 Python") | - ![](https://box.kancloud.cn/a721fc7ec672275e257bbbfde49a4d4e_16x16.png) - [Python](https://www.python.org/) ? - zh\_CN 3.7.3 [文檔](../index.xhtml) ? - $('.inline-search').show(0); | # Python 語言參考本參考手冊描述了 Python 的語法和“核心語義”。本參考是簡潔的，但試圖做到準確和完整。非必要的內建對象類型和內建函數、模塊的語義描述在 [Python 標準庫](../library/index.xhtml#library-index) 中。有關該語言的非正式介紹，請參閱 [Python 教程](../tutorial/index.xhtml#tutorial-index) 。對 C 或 C++ 程序員，還有兩個額外的手冊： [擴展和嵌入 Python 解釋器](../extending/index.xhtml#extending-index) 概述了如何編寫一個 Python 擴展模塊，[Python/C API 參考手冊](../c-api/index.xhtml#c-api-index) 詳細介紹了 C/C++ 中可用的接口。 - [1. 概述](introduction.xhtml) - [1.1. 其他實現](introduction.xhtml#alternate-implementations) - [1.2. 標注](introduction.xhtml#notation) - [2. 詞法分析](lexical_analysis.xhtml) - [2.1. 行結構](lexical_analysis.xhtml#line-structure) - [2.2. 其他形符](lexical_analysis.xhtml#other-tokens) - [2.3. 標識符和關鍵字](lexical_analysis.xhtml#identifiers) - [2.4. 字面值](lexical_analysis.xhtml#literals) - [2.5. 運算符](lexical_analysis.xhtml#operators) - [2.6. 分隔符](lexical_analysis.xhtml#delimiters) - [3. 數據模型](datamodel.xhtml) - [3.1. 對象、值與類型](datamodel.xhtml#objects-values-and-types) - [3.2. 標準類型層級結構](datamodel.xhtml#the-standard-type-hierarchy) - [3.3. 特殊方法名稱](datamodel.xhtml#special-method-names) - [3.4. 協程](datamodel.xhtml#coroutines) - [4. 執行模型](executionmodel.xhtml) - [4.1. 程序的結構](executionmodel.xhtml#structure-of-a-program) - [4.2. 命名與綁定](executionmodel.xhtml#naming-and-binding) - [4.3. 異常](executionmodel.xhtml#exceptions) - [5. 導入系統](import.xhtml) - [5.1. `importlib`](import.xhtml#importlib) - [5.2. 包](import.xhtml#packages) - [5.3. 搜索](import.xhtml#searching) - [5.4. 加載](import.xhtml#loading) - [5.5. 基于路徑的查找器](import.xhtml#the-path-based-finder) - [5.6. 替換標準導入系統](import.xhtml#replacing-the-standard-import-system) - [5.7. Package Relative Imports](import.xhtml#package-relative-imports) - [5.8. 有關 \_\_main\_\_ 的特殊事項](import.xhtml#special-considerations-for-main) - [5.9. 開放問題項](import.xhtml#open-issues) - [5.10. 參考文獻](import.xhtml#references) - [6. 表達式](expressions.xhtml) - [6.1. 算術轉換](expressions.xhtml#arithmetic-conversions) - [6.2. 原子](expressions.xhtml#atoms) - [6.3. 原型](expressions.xhtml#primaries) - [6.4. await 表達式](expressions.xhtml#await-expression) - [6.5. 冪運算符](expressions.xhtml#the-power-operator) - [6.6. 一元算術和位運算](expressions.xhtml#unary-arithmetic-and-bitwise-operations) - [6.7. 二元算術運算符](expressions.xhtml#binary-arithmetic-operations) - [6.8. 移位運算](expressions.xhtml#shifting-operations) - [6.9. 二元位運算](expressions.xhtml#binary-bitwise-operations) - [6.10. 比較運算](expressions.xhtml#comparisons) - [6.11. 布爾運算](expressions.xhtml#boolean-operations) - [6.12. 條件表達式](expressions.xhtml#conditional-expressions) - [6.13. lambda 表達式](expressions.xhtml#lambda) - [6.14. 表達式列表](expressions.xhtml#expression-lists) - [6.15. 求值順序](expressions.xhtml#evaluation-order) - [6.16. 運算符優先級](expressions.xhtml#operator-precedence) - [7. 簡單語句](simple_stmts.xhtml) - [7.1. 表達式語句](simple_stmts.xhtml#expression-statements) - [7.2. 賦值語句](simple_stmts.xhtml#assignment-statements) - [7.3. `assert` 語句](simple_stmts.xhtml#the-assert-statement) - [7.4. `pass` 語句](simple_stmts.xhtml#the-pass-statement) - [7.5. `del` 語句](simple_stmts.xhtml#the-del-statement) - [7.6. `return` 語句](simple_stmts.xhtml#the-return-statement) - [7.7. `yield` 語句](simple_stmts.xhtml#the-yield-statement) - [7.8. `raise` 語句](simple_stmts.xhtml#the-raise-statement) - [7.9. `break` 語句](simple_stmts.xhtml#the-break-statement) - [7.10. `continue` 語句](simple_stmts.xhtml#the-continue-statement) - [7.11. `import` 語句](simple_stmts.xhtml#the-import-statement) - [7.12. `global` 語句](simple_stmts.xhtml#the-global-statement) - [7.13. `nonlocal` 語句](simple_stmts.xhtml#the-nonlocal-statement) - [8. 復合語句](compound_stmts.xhtml) - [8.1. `if` 語句](compound_stmts.xhtml#the-if-statement) - [8.2. `while` 語句](compound_stmts.xhtml#the-while-statement) - [8.3. `for` 語句](compound_stmts.xhtml#the-for-statement) - [8.4. `try` 語句](compound_stmts.xhtml#the-try-statement) - [8.5. `with` 語句](compound_stmts.xhtml#the-with-statement) - [8.6. 函數定義](compound_stmts.xhtml#function-definitions) - [8.7. 類定義](compound_stmts.xhtml#class-definitions) - [8.8. 協程](compound_stmts.xhtml#coroutines) - [9. 最高層級組件](toplevel_components.xhtml) - [9.1. 完整的 Python 程序](toplevel_components.xhtml#complete-python-programs) - [9.2. 文件輸入](toplevel_components.xhtml#file-input) - [9.3. 交互式輸入](toplevel_components.xhtml#interactive-input) - [9.4. 表達式輸入](toplevel_components.xhtml#expression-input) - [10. 完整的語法規范](grammar.xhtml) ### 導航 - [索引](../genindex.xhtml "總目錄") - [模塊](../py-modindex.xhtml "Python 模塊索引") | - [下一頁](introduction.xhtml "1. 概述") | - [上一頁](../using/mac.xhtml "4. 在蘋果系統上使用 Python") | - ![](https://box.kancloud.cn/a721fc7ec672275e257bbbfde49a4d4e_16x16.png) - [Python](https://www.python.org/) ? - zh\_CN 3.7.3 [文檔](../index.xhtml) ? - $('.inline-search').show(0); | ? 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