異常 · Jinja2中文文檔

*exception?*jinja2.TemplateError(*message=None*)[](http://docs.jinkan.org/docs/jinja2/api.html#jinja2.TemplateError "Permalink to this definition") Baseclass for all template errors. *exception?*jinja2.UndefinedError(*message=None*)[](http://docs.jinkan.org/docs/jinja2/api.html#jinja2.UndefinedError "Permalink to this definition") Raised if a template tries to operate on?[Undefined](http://docs.jinkan.org/docs/jinja2/api.html#jinja2.Undefined "jinja2.Undefined"). *exception?*jinja2.TemplateNotFound(*name*,?*message=None*)[](http://docs.jinkan.org/docs/jinja2/api.html#jinja2.TemplateNotFound "Permalink to this definition") Raised if a template does not exist. *exception?*jinja2.TemplatesNotFound(*names=()*,?*message=None*)[](http://docs.jinkan.org/docs/jinja2/api.html#jinja2.TemplatesNotFound "Permalink to this definition") Like?[TemplateNotFound](http://docs.jinkan.org/docs/jinja2/api.html#jinja2.TemplateNotFound "jinja2.TemplateNotFound")?but raised if multiple templates are selected. This is a subclass of?[TemplateNotFound](http://docs.jinkan.org/docs/jinja2/api.html#jinja2.TemplateNotFound "jinja2.TemplateNotFound")?exception, so just catching the base exception will catch both. New in version 2.2. *exception?*jinja2.TemplateSyntaxError(*message*,?*lineno*,?*name=None*,*filename=None*)[](http://docs.jinkan.org/docs/jinja2/api.html#jinja2.TemplateSyntaxError "Permalink to this definition") Raised to tell the user that there is a problem with the template. message[](http://docs.jinkan.org/docs/jinja2/api.html#jinja2.TemplateSyntaxError.message "Permalink to this definition") 錯誤信息的 utf-8 字節串。 lineno[](http://docs.jinkan.org/docs/jinja2/api.html#jinja2.TemplateSyntaxError.lineno "Permalink to this definition") 發生錯誤的行號。 name[](http://docs.jinkan.org/docs/jinja2/api.html#jinja2.TemplateSyntaxError.name "Permalink to this definition") 模板的加載名的 unicode 字符串。 filename[](http://docs.jinkan.org/docs/jinja2/api.html#jinja2.TemplateSyntaxError.filename "Permalink to this definition") 加載的模板的文件名字節串，以文件系統的編碼（多是 utf-8 ， Windows 是 mbcs ）。文件名和錯誤消息是字節串而不是 unicode 字符串的原因是，在 Python 2.x 中，不對異常和回溯使用 unicode ，編譯器同樣。這會在 Python 3 改變。 *exception?*jinja2.TemplateAssertionError(*message*,?*lineno*,?*name=None*,*filename=None*)[](http://docs.jinkan.org/docs/jinja2/api.html#jinja2.TemplateAssertionError "Permalink to this definition") Like a template syntax error, but covers cases where something in the template caused an error at compile time that wasn’t necessarily caused by a syntax error. However it’s a direct subclass of?[TemplateSyntaxError](http://docs.jinkan.org/docs/jinja2/api.html#jinja2.TemplateSyntaxError "jinja2.TemplateSyntaxError")?and has the same attributes.