I don't understand the use of python re library.

not long after I first came into contact with python, I needed to use regularities when crawling pages, but I was confused after reading python"s re library for a long time. Maybe I got silly after a whole day"s work. =-sharp
I have many of the following url characters that need to be regularly fetched & the numbers after pn
http://www.qqddc.com/proIndex.do?method=index&thin=0&pb=168&pn=10
also need to use regularities to get the following characters in addition to
http://www.qqddc.com/proIndex.do?method=index&thin=0&pb=168&pn=
, a string of characters such as
ask for instructions here. Thank you for your guidance. Thank you

Python regular-expression web-crawler

Mar.23,2021

it is not recommended to use regularization, but it is recommended to use the standard urllib library to complete

>>>import urllib
>>>a = urllib.parse.parse_qs(urllib.parse.urlparse("http://abc.com/def?x=2&pn=2").query)
>>>a
{'x': ['2'], 'pn': ['2']}

or get dict directly in the following way

>>>a = dict(urllib.parse.parse_qsl(urllib.parse.urlparse("http://abc.com/def?x=2&pn=2").query))
>>>a
{'x': '2', 'pn': '2'}

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