如何使用Python中的帮助

原创

雷大亨

发布于 2018-01-01 11:58:14

1.9K0

其实学一门新语言，或是接触一个新东西，真的要注意其自带的帮助文档，比如各种manual、内嵌的帮助命令等等，尤其是是在Linux/UNIX领域。

比如学习Python，你在交互式的Python shell中键入help时，会提示：

>>> help

Type help() for interactive help, or help(object) for help about object.

那么你如果在意的话，就会很容易了，要么键入help()，要么键入help('modules')之类的。比如：

>>> help("keywords")

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

and                 elif                if                  print

as                  else                import              raise

assert              except              in                  return

break               exec                is                  try

class               finally             lambda              while

continue            for                 not                 with

def                 from                or                  yield

del                 global              pass

或是键入help()以后也要注意其提示：

>>> help()

Welcome to Python 2.7!  This is the online help utility.

If this is your first time using Python, you should definitely check out

the tutorial on the Internet at http://docs.python.org/tutorial/.

Enter the name of any module, keyword, or topic to get help on writing

Python programs and using Python modules.  To quit this help utility and

return to the interpreter, just type "quit".

To get a list of available modules, keywords, or topics, type "modules",

"keywords", or "topics".  Each module also comes with a one-line summary

of what it does; to list the modules whose summaries contain a given word

such as "spam", type "modules spam".

如果看明白了这段提示，你再继续，就应该是：

help> keywords

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

and                 elif                if                  print

as                  else                import              raise

assert              except              in                  return

break               exec                is                  try

class               finally             lambda              while

continue            for                 not                 with

def                 from                or                  yield

del                 global              pass

所以，要善于利用这些资源！

收藏于 2011-10-29

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