Hi freshmen, find your student number in Tsinghua.

find_student_number.py

import http.cookiejar
import urllib.parse
import urllib.request

# Run the script with Python3.
# Please use your own information, and don't be evil.

name = '张三'
id = '110101199901234567'
number_start = 2019310001
# Use 2019310001 if you are PhD student.
# Change it to 2019210001 if you are master student.

if __name__ == '__main__':
    cj = http.cookiejar.CookieJar()
    opener = urllib.request.build_opener(urllib.request.HTTPCookieProcessor(cj))
    url_base = 'https://id.tsinghua.edu.cn/'
    opener.open(url_base + r'do/off/ui/activation')
    for number in range(number_start, number_start + 4000):
        r = opener.open(
            url_base + r'do/off/ui/activation/grad/pre-register/conform',
            r'realName={}&idNo={}&userId={}'.format(
                urllib.parse.quote(name.encode('gbk')),
                id,
                number,
            ).encode(),
        )
        assert 200 == r.code
        if '/do/off/ui/activation/grad/pre-register/error' in r.url:
            print(number, 'incorrect')
        else:
            print('Your student number is', number)
            break