有一个很好的库w3lib.url

from w3lib.url import url_query_parameter
url = "/abc?def=ghi"
print url_query_parameter(url, 'def')
ghi

3.4 . for Python >

from urllib import parse
url = 'http://foo.appspot.com/abc?def=ghi'
query_def=parse.parse_qs(parse.urlparse(url).query)['def'][0]

在原始python中解析它:

path = '/some_path?k1=v1&k2=v2&k3=v3'
_, query_string = path.split('?')
params  = dict(param.split('=') for param in query_string.split('&'))
print(params)

输出:

{'k1': 'v1', 'k2': 'v2', 'k3': 'v3'}

在纯Python中:

def get_param_from_url(url, param_name):
    return [i.split("=")[-1] for i in url.split("?", 1)[-1].split("&") if i.startswith(param_name + "=")][0]

import urlparse
url = 'http://example.com/?q=abc&p=123'
par = urlparse.parse_qs(urlparse.urlparse(url).query)

print par['q'][0], par['p'][0]

urlparse模块提供了你需要的一切:

urlparse.parse_qs ()