Python模塊和函數的快速查看

如果想查看某個模塊提供了哪些函數等，我們可以進入python控制台，然后導入模塊，再使用help(模塊名)來查看這個模塊的功能有哪些。

 以string模塊為例：

 

             
          
>>>  
          import string 
          
>>> help(string) 
          
 
          
Help on module string: 
          
 
          
NAME 
          
    string - A collection of string operations (most are no longer used). 
          
 
          
FILE 
          
    /usr/lib/python2.7/string.py 
          
 
          
MODULE DOCS 
          
    http://docs.python.org/library/string 
          
 
          
DESCRIPTION 
          
    Warning: most of the code you see here isn 
          ' 
          t normally used nowadays. 
          
    Beginning with Python 1.6, many of these functions are implemented as 
          
    methods on the standard string object. They used to be implemented by 
          
    a built- 
          in module called strop, but strop  
          is now obsolete itself. 
          
     
          
    Public module variables: 
          
     
          
    whitespace -- a string containing all characters considered whitespace 
          
    lowercase -- a string containing all characters considered lowercase letters 
          
    uppercase -- a string containing all characters considered uppercase letters 
          
    letters -- a string containing all characters considered letters 
          
: 
         

 

如果想查看某一個具體的函數，可以使用help(函數名）：

           >>>help(format) 
          
 
          
Help on built- 
          in function format  
          in module  
          __builtin__: 
          
 
          
format(...) 
          
    format(value[, format_spec]) -> string 
          
     
          
    Returns value. 
          __format__(format_spec) 
          
    format_spec defaults to  
          ""