本文实例讲述了Python3的urllib.parse常用函数。分享给大家供大家参考，具体如下：
1、获取url参数
>>> from urllib import parse
>>> url = r'https://docs.python.org/3.5/search.html?q=parse&check_keywords=yes&area=default'
>>> parseResult = parse.urlparse(url)
>>> parseResult
ParseResult(scheme='https', netloc='docs.python.org', path='/3.5/search.html', params='', query='q=parse&check_keywords=yes&area=default', fragment='')
>>> param_dict = parse.parse_qs(parseResult.query)
>>> param_dict
{'q': ['parse'], 'check_keywords': ['yes'], 'area': ['default']}
>>> q = param_dict['q'][0]
>>> q
'parse'
#注意：加号会被解码，可能有时并不是我们想要的
>>> parse.parse_qs('proxy=183.222.102.178:8080&task=XXXXX|5-3+2')
{'proxy': ['183.222.102.178:8080'], 'task': ['XXXXX|5-3 2']}
2、urlencode
>>> from urllib import parse
>>> query = {
'name': 'walker',
'age': 99,
}
>>> parse.urlencode(query)
'name=walker&age=99'
3、quote/quote_plus
>>> from urllib import parse
>>> parse.quote('a&b/c') #未编码斜线
'a%26b/c'
>>> parse.quote_plus('a&b/c') #编码了斜线
'a%26b%2Fc'
4、unquote/unquote_plus
from urllib import parse
>>> parse.unquote('1+2') #不解码加号
'1+2'
>>> parse.unquote('1+2') #把加号解码为空格
'1 2'