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urlparse.parse_qs is usefull for parsing url parameters, and it works fine with simple ASCII url, represented by str. So i can parse a query and then construct the same path using urllib.urlencode from parsed data:
>>> import urlparse
>>> import urllib
>>>
>>> path = '/?key=value' #path is str
>>> query = urlparse.urlparse(path).query
>>> query
'key=value'
>>> query_dict = urlparse.parse_qs(query)
>>> query_dict
{'key': ['value']}
>>> '/?' + urllib.urlencode(query_dict, doseq=True)
'/?key=value' # <-- path is the same here
It also works fine, when url contains percent encoded non-ASCII param:
>>> value = urllib.quote(u'значение'.encode('utf8'))
>>> value
'%D0%B7%D0%BD%D0%B0%D1%87%D0%B5%D0%BD%D0%B8%D0%B5'
>>> path = '/?key=%s' % value
>>> path
'/?key=%D0%B7%D0%BD%D0%B0%D1%87%D0%B5%D0%BD%D0%B8%D0%B5'
>>> query = urlparse.urlparse(path).query
>>> query
'key=%D0%B7%D0%BD%D0%B0%D1%87%D0%B5%D0%BD%D0%B8%D0%B5'
>>> query_dict = urlparse.parse_qs(query)
>>> query_dict
{'key': ['\xd0\xb7\xd0\xbd\xd0\xb0\xd1\x87\xd0\xb5\xd0\xbd\xd0\xb8\xd0\xb5']}
>>> '/?' + urllib.urlencode(query_dict, doseq=True)
'/?key=%D0%B7%D0%BD%D0%B0%D1%87%D0%B5%D0%BD%D0%B8%D0%B5' # <-- path is the same here
But, when using django, i get the url using request.get_full_path(), and it returns path as unicode string:
>>> path = request.get_full_path()
>>> path
u'/?key=%D0%B7%D0%BD%D0%B0%D1%87%D0%B5%D0%BD%D0%B8%D0%B5' # path is unicode
Look what will happen now:
>>> query = urlparse.urlparse(path).query
>>> query
u'key=%D0%B7%D0%BD%D0%B0%D1%87%D0%B5%D0%BD%D0%B8%D0%B5'
>>> query_dict = urlparse.parse_qs(query)
>&