Python实现使用dir获取类的方法列表-创新互联

使用Python的内置方法dir，可以范围一个模块中定义的名字的列表。

官方解释是:

Docstring:
dir([object]) -> list of strings

If called without an argument, return the names in the current scope.
Else, return an alphabetized list of names comprising (some of) the attributes
of the given object, and of attributes reachable from it.
If the object supplies a method named __dir__, it will be used; otherwise
the default dir() logic is used and returns:
 for a module object: the module's attributes.
 for a class object: its attributes, and recursively the attributes
  of its bases.
 for any other object: its attributes, its class's attributes, and
  recursively the attributes of its class's base classes.