OWL ELO

import requests
from operator import itemgetter

class Team:
    def __init__(self, name, abbrev,maps):
        self.name=name
        self.abbrev=abbrev
        self.elo=1000
        self.maps = maps

def expected(A, B):
    return 1 / (1 + 10 ** ((B - A) / 400))
def elo(old, exp, score, k=24):
    return old + k * (score - exp)

if __name__ == "__main__":
    teamresp = requests.get('https://api.overwatchleague.com/ranking')
    if teamresp.status_code != 200:
        raise ApiError('GET /ranking {}'.format(teamresp.status_code))
    mapresp = requests.get('https://api.overwatchleague.com/maps')
    if mapresp.status_code != 200:
        raise ApiError('GET /ranking {}'.format(mapresp.status_code))
    maps = {}
    for map in mapresp.json():
        maps[map['guid']]=map['name']['en_US']
    #print(maps)
    #print(teamresp.json()['content'][0])
    teams = {}
    for team in teamresp.json()['content']:
        teammaps={}
        for map in maps.keys():
            teammaps[map] = 1000
        teams[team['competitor']['id']] = Team(team['competitor']['name'],team['competitor']['abbreviatedName'],teammaps)
    for teamid in teams.keys():
        print(teamid,teams[teamid].name)
    resp = requests.get('https://api.overwatchleague.com/schedule')
    if resp.status_code != 200:
        raise ApiError('GET /schedule {}'.format(resp.status_code))
    print(resp.json()['data']['stages'][0]['matches'][0]['games'][0]['attributes']['mapGuid'])
    for match in resp.json()['data']['stages'][0]['matches']:
        if match['state'] != "CONCLUDED":
            break
        A = teams[match['competitors'][0]['id']]
        B = teams[match['competitors'][1]['id']]
        print(A.name, "vs", B.name)
        for game in match['games']:
            exp = expected(A.elo,B.elo)
            gamemap = game['attributes']['mapGuid']
            mapexp = expected(A.maps[gamemap],B.maps[gamemap])
            print("{0} vs {1} map {2} - {3} EV {4:.3f} map EV {5:.3f}".format(A.abbrev,B.abbrev,game['number'],maps[gamemap],exp,mapexp))
            points = game['points']
            if points[0] > points[1]:
                A.elo = elo(A.elo,exp,1)
                A.maps[gamemap] = elo(A.maps[gamemap],mapexp,1)
                B.elo = elo(B.elo,1-exp,0)
                B.maps[gamemap] = elo(B.maps[gamemap],1-mapexp,0)
                print("{0} wins, ELOs {1:.1f} {2:.1f} {3:.1f} {4:.1f}".format(A.abbrev,A.elo,B.elo,A.maps[gamemap],B.maps[gamemap]))
            elif points[0] < points[1]:
                A.elo = elo(A.elo,exp,0)
                A.maps[gamemap] = elo(A.maps[gamemap],mapexp,0)
                B.elo = elo(B.elo,1-exp,1)
                B.maps[gamemap] = elo(B.maps[gamemap],1-mapexp,1)
                print("{0} wins, ELOs {1:.1f} {2:.1f} {3:.1f} {4:.1f}".format(B.abbrev,A.elo,B.elo,A.maps[gamemap],B.maps[gamemap]))
            else:
                A.elo = elo(A.elo,exp,0.5)
                A.maps[gamemap] = elo(A.maps[gamemap],mapexp,0.5)
                B.elo = elo(B.elo,1-exp,0.5)
                B.maps[gamemap] = elo(B.maps[gamemap],1-mapexp,0.5)
                print("draw, ELOs {0:.1f} {1:.1f} {2:.1f} {3:.1f}".format(A.elo,B.elo,A.maps[gamemap],B.maps[gamemap]))
            print()
    teamelos = {}
    for teamid in teams.keys():
        teamelos[teamid]=teams[teamid].elo
    i=1
    for key, value in sorted(teamelos.items(), key = itemgetter(1), reverse = True):
        print("{0}: {1} {2:.1f}".format(i,teams[key].name,value))
        i+=1