Python查看关键字和帮助信息

1、查看所有的关键字

>>> help('keywords')

Here is a list of the Python keywords.  Enter any keyword to get more help.

False               def                 if                  raise
None                del                 import              return
True                elif                in                  try
and                 else                is                  while
as                  except              lambda              with
assert              finally             nonlocal            yield
break               for                 not
class               from                or
continue            global              pass

>>> import keyword
>>> keyword.iskeyword('if')
True
>>> keyword.kwlist
['False', 'None', 'True', 'and', 'as', 'assert', 'break', 'class', 'continue',

 'def', 'del', 'elif', 'else', 'except', 'finally', 'for', 'from', 'global', 

'if', 'import', 'in', 'is', 'lambda', 'nonlocal', 'not', 'or', 'pass', 

'raise', 'return', 'try', 'while', 'with', 'yield']
>>> keyword.iskeyword('of')
False
>>>

　　

2、查看其它帮助

• help('modules')  # 查看Python所有的modules
• help('modules b ')  # 查看Python所有的modules中包含指定字符串的modules
• help('topics')  # 查看Python中常见的topics
• help('os.path')  # 查看Python标准库中的module
• help('list')  # 查看Python内置的类型
• heop('str.find')  # 查看Python类型的成员方法
• help('open')  # 查看Python内置函数