Python3 urlparse

最新推荐文章于 2024-02-19 23:04:32 发布

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最新推荐文章于 2024-02-19 23:04:32 发布

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文章标签： python

原文链接：http://www.cnblogs.com/itlqs/p/6055365.html

本文介绍了Python中使用urllib.parse模块解析URL的方法，包括如何获取URL各部分如scheme、netloc、path等，并展示了如何利用urljoin函数进行URL的拼接操作。

>>> from urllib.parse import urlparse
>>> o = urlparse('http://www.cwi.nl:80/%7Eguido/Python.html')
>>> o   
ParseResult(scheme='http', netloc='www.cwi.nl:80', path='/%7Eguido/Python.html',
            params='', query='', fragment='')
>>> o.scheme
'http'
>>> o.port
80
>>> o.geturl()
'http://www.cwi.nl:80/%7Eguido/Python.html'

>>> from urllib.parse import urlparse
>>> urlparse('//www.cwi.nl:80/%7Eguido/Python.html')
ParseResult(scheme='', netloc='www.cwi.nl:80', path='/%7Eguido/Python.html',
           params='', query='', fragment='')
>>> urlparse('www.cwi.nl/%7Eguido/Python.html')
ParseResult(scheme='', netloc='', path='www.cwi.nl/%7Eguido/Python.html',
           params='', query='', fragment='')
>>> urlparse('help/Python.html')
ParseResult(scheme='', netloc='', path='help/Python.html', params='',
           query='', fragment='')

Attribute	Index	Value	Value if not present
`scheme`	0	URL scheme specifier	scheme parameter
`netloc`	1	Network location part	empty string
`path`	2	Hierarchical path	empty string
`params`	3	Parameters for last path element	empty string
`query`	4	Query component	empty string
`fragment`	5	Fragment identifier	empty string
`username`		User name	`None`
`password`		Password	`None`
`hostname`		Host name (lower case)	`None`
`port`		Port number as integer, if present	`None`

来源：https://docs.python.org/3/library/urllib.parse.html?highlight=urlparse#urllib.parse.urlparse

from urllib.parse import urljoin
>>> urljoin("http://www.asite.com/folder/currentpage.html", "anotherpage.html")
'http://www.asite.com/folder/anotherpage.html'
>>> urljoin("http://www.asite.com/folder/currentpage.html", "folder2/anotherpage.html")
'http://www.asite.com/folder/folder2/anotherpage.html'
>>> urljoin("http://www.asite.com/folder/currentpage.html", "/folder3/anotherpage.html")
'http://www.asite.com/folder3/anotherpage.html'
>>> urljoin("http://www.asite.com/folder/currentpage.html", "../finalpage.html")
'http://www.asite.com/finalpage.html'