python3 script to show problem difficulty rating without tags

#	User	Rating
1	tourist	3993
2	jiangly	3743
3	orzdevinwang	3707
4	Radewoosh	3627
5	jqdai0815	3620
6	Benq	3564
7	Kevin114514	3443
8	ksun48	3434
9	Rewinding	3397
10	Um_nik	3396

#	User	Contrib.
1	cry	167
2	Um_nik	163
3	maomao90	162
3	atcoder_official	162
5	adamant	159
6	-is-this-fft-	158
7	awoo	156
8	TheScrasse	154
9	Dominater069	153
10	nor	152

As I couldn't find any easy way to find problem difficulty rating without seeing tags, I have written a python3 script to do it:

Code

import urllib.request, json

def get_all_problems(contestId):
    query = "https://codeforces.net/api/contest.standings?contestId="+contestId+"&from=1&count=1"
    with urllib.request.urlopen(query) as url:
        data = json.loads(url.read().decode())
        return data['result']['problems']

info = input("Enter contestId[/problemIndex], you can find contestId in URL\n")
if "/" not in info:
    print([(problem['index'], problem.get('rating')) for problem in get_all_problems(info)])
else:
    contestId, problemIndex = info.split('/')
    print([problem.get('rating') for problem in get_all_problems(contestId) if problem['index']==problemIndex][0])

Usage: Run the script. Input the contestId (from URL, e.g. 1148) to view rating of all problems of that contests. Input contestId/problemIndex (e.g. 1108/E2) to view rating of only that problem.

If the problem has no rating yet, it will print None. Exception will be thrown if it fails to connect to codeforces server or invalid input is given.