csv Python问题涉及两个我无法解决的For循环

fnatzsnv  于 2022-12-06  发布在  Python
关注(0)|答案(2)|浏览(120)

EPLgames2018/19 CSV我对python还是个新手。
我正在阅读一个CSV文件,其中包含了2018/19赛季每一场英语联赛的统计数据。
我已经创建了一个所有球队的列表。然后我试图轮流拿每支球队,并循环通过所有的比赛来计算每支球队本赛季的总积分。
这似乎对一线队很有效。它需要曼联,我为他们得到正确的分数。我遇到的问题是进入名单中的下一支球队,然后和他们一起循环积分代码。

import csv

with open('EPL1819.csv') as file:
    eplgames = csv.DictReader(file)

    teampoints = list()
    eplteams = list()
    teamcount = 0
    count = 0
    # Outer loop going through teams one at a time

    for i in range(20):
        points = 0
        # Inner loop going through each match

        for x in eplgames:

            # Populates the eplteams list
            if x['HomeTeam'] not in eplteams:
                eplteams.append(x['HomeTeam'])
                teamcount += 1

            #print(eplteams[i])
            # Works out the match result
            if x['FTHG'] > x['FTAG']:
                match_result = x['HomeTeam']
            elif x['FTHG'] < x['FTAG']:
                match_result = x['AwayTeam']
            else:
                match_result = "Draw"

            if eplteams[i] == match_result:
                points += 3

            if eplteams[i] == x['HomeTeam']:
                if match_result == "Draw":
                    points += 1

            if eplteams[i] == x['AwayTeam']:
                if match_result == "Draw":
                    points += 1

        # Populates the teampoints list
        teampoints.append(points)

        print(eplteams[i])
        print("Points:", points)
        print("Points List:", teampoints[i])
ecfsfe2w

ecfsfe2w1#

您正在根据某些条件将小组添加到eplteams:

if x['HomeTeam'] not in eplteams:
    eplteams.append(x['HomeTeam'])
    teamcount += 1

然后在条件中使用eplteam元素:

if eplteams[i] == match_result:
    points += 3

if eplteams[i] == x['HomeTeam']:
    if match_result == "Draw":
        points += 1

if eplteams[i] == x['AwayTeam']:
    if match_result == "Draw":
        points += 1

看起来不对。eplteams中的元素i此时可能不存在。

g0czyy6m

g0czyy6m2#

你需要在循环eplgames之前填充,否则它可能找不到正在比赛的球队:

def populate(eplgames):
    eplteams = []
    for x in eplgames:
        # Populates the eplteams list
        if x['HomeTeam'] not in eplteams:
            eplteams.append(x['HomeTeam'])
            teamcount += 1
    return teamcount, eplteams

循环前填充:

teamcount, eplteams = populate(eplgames)
for i in range(20):
    points = 0
    # Inner loop going through each match
    for x in eplgames:
        #print(eplteams[i])
        # Works out the match result
        if x['FTHG'] > x['FTAG']:
            match_result = x['HomeTeam']

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