given a book title, find it's category according to gzlib.org.cn

gzlib.py

import requests, re

filename='Books.txt'

def gzlib(q):
	url=f'https://opac.gzlib.org.cn/opac/search?q={q}&searchWay=title'
	response = requests.get(url)
	bookrecno = set(re.findall(r'bookDetail\((\d+)', response.text))
	if len(bookrecno) == 1:
		bookrecno = bookrecno.pop()
		url=f'https://opac.gzlib.org.cn/opac/book/callnos?bookrecnos={bookrecno}'
		response = requests.get(url)
		return re.findall(r'CDATA\[(.*?)]', response.text)
	else:
		return []

for x in open(filename).read().splitlines():
    print(x, gzlib(x))