创新互联Python教程:python3如何看文档
调用help函数,可以看到一个函数或者方法的字符串文档。

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In [1]: import requests In [2]: help(requests.get) Help on function get in module requests.api: get(url, params=None, **kwargs) Sends a GET request. :param url: URL for the new :class:`Request` object. :param params: (optional) Dictionary or bytes to be sent in the query string for the :class:`Request`. :param \*\*kwargs: Optional arguments that ``request`` takes. :return: :class:`Response` object :rtype: requests.Response
使用dir可以查看模块或对象都有那些方法。
In [3]: dir(requests) Out[3]: ['ConnectionError', 'HTTPError', 'compat', 'cookies', 'delete', 'exceptions', 'get', 'head', 'hooks', ...
使用ipython+?查看
In [4]: requests.get? Type: function String form:File: /Library/Python/2.7/site-packages/requests/api.py Definition: requests.get(url, params=None, **kwargs) Docstring: Sends a GET request. :param url: URL for the new :class:`Request` object. :param params: (optional) Dictionary or bytes to be sent in the query string for the :class:`Request`. :param \*\*kwargs: Optional arguments that ``request`` takes. :return: :class:`Response ` object :rtype: requests.Response
使用pydoc查看字符串文档
~ python -m pydoc requests
Help on package requests:
NAME
requests
FILE
/Library/Python/2.7/site-packages/requests/__init__.py
DESCRIPTION
requests HTTP library
Requests is an HTTP library, written in Python, for human beings. Basic GET
usage:
>>> import requests
>>> r = requests.get('https://www.python.org')
>>> r.status_code
200
>>> 'Python is a programming language' in r.content
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