# Python3的urllib.parse常用函數
獲取url參數
>>> 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:加號會被解碼,可能有時並不是我們想要的
>>> 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') #未編碼斜線
'a%26b/c'
>>> parse.quote_plus('a&b/c') #編碼了斜線
'a%26b%2Fc'
4、unquote/unquote_plus
from urllib import parse
>>> parse.unquote('1+2') #不解碼加號
'1+2'
>>> parse.unquote('1+2') #把加號解碼爲空格
'1 2'
如果你還想問爲什麼沒有urldecode——再把示例1看五遍。^_^