Python中help() 与 dir()

在Python中行走的拐杖：help() 与 dir()

1. 

Python v2.7.1 documentation » The Python Standard Library »

• 2. Built-in Functions

找到help()

help([object])

Invoke the built-in help system. (This function is intended for interactive use.) If no argument is given, the interactive help system starts on the interpreter console. If the argument is a string, then the string is looked up as the name of a module, function, class, method, keyword, or documentation topic, and a help page is printed on the console. If the argument is any other kind of object, a help page on the object is generated.

This function is added to the built-in namespace by the site module.

New in version 2.2.

>>>help(dir) 即可

2. dir()

>>>import copy

>>>[n for n in dir(copy) if not n.startswith('_')]

 
• Python v2.7.1 documentation » 
• The Python Standard Library »

 
• Python v2.7.1 documentation » 
• The Python Standard Library »