python3 script to show problem difficulty rating without tags

#	User	Rating
1	tourist	4009
2	jiangly	3831
3	Radewoosh	3646
4	jqdai0815	3620
4	Benq	3620
6	orzdevinwang	3529
7	ecnerwala	3446
8	Um_nik	3396
9	gamegame	3386
10	ksun48	3373

#	User	Contrib.
1	cry	164
1	maomao90	164
3	Um_nik	163
4	atcoder_official	160
5	-is-this-fft-	158
6	awoo	157
7	adamant	156
8	TheScrasse	154
8	nor	154
10	Dominater069	153

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.