迭代时将键添加到 int 的 defaultdict

Question

该脚本需要从 text/csv 文件读取输入，但是一旦我尝试实现该功能，一切都会中断。这是我的代码：from collections import defaultdict#from csv import readerdata = """Lions 3, Snakes 3Tarantulas 1, FC Awesome 0Lions 1, FC Awesome 1Tarantulas 3, Snakes 1Lions 4, Grouches 0"""# with open('sample_input.csv') as data:#     csv = reader(data)#     list_csv = [line.rstrip('\n') for line in data]data_list = data.splitlines()def splitter(row):    left_team, right_team = row.split(',')    return {        'left': left_team[:-2].strip(),        'left_score': int(left_team[-2:].strip()),        'right': right_team[:-2].strip(),        'right_score': int(right_team[-2:].strip())    }data_dicts = [splitter(row) for row in data_list]team_scores = defaultdict(int)for game in data_dicts:    if game['left_score'] == game['right_score']:        team_scores[game['left']] += 1        team_scores[game['right']] += 1    elif game ['left_score'] > game['right_score']:        team_scores[game['left']] += 3    else:        team_scores[game['right']] += 3    print(team_scores)teams_sorted = sorted(team_scores.items(), key=lambda team: team[1], reverse=True)# for line in teams_sorted:#     print(line)此外，我需要的预期输出是：1. Tarantulas, 6 pts2. Lions, 5 pts3. FC Awesome, 1 pt3. Snakes, 1 pt4. Grouches, 0 pts我似乎无法弄清楚如何到达这一步。我用打印语句检查了我的大部分代码，看起来字典工作正常，但它没有打印最后一支球队和它的分数（Grouches，0 分）。我目前得到这个输出：('Tarantulas', 6)('Lions', 5)('Snakes', 1)('FC Awesome', 1)任何帮助将不胜感激！

Answer 1

添加 CSV 时的代码中断。CSV 阅读器split(',')为您完成。所以你的left_team = row[0]和right_team = row[1]

所以你的代码变成了类似的东西

def spliter(row):

    left_team, right_team = row

    return {

        'left': left_team[:-2].strip(),

        'left_score': int(left_team[-2:].strip()),

        'right': right_team[:-2].strip(),

        'right_score': int(right_team[-2:].strip())

    }

with open('data.csv') as data_obj:

    reader = csv.reader(data_obj)

    data_dicts = [splitter(row) for row in reader]

如果你想手动，你可以去纯文本阅读split(',')。

with open('data.csv') as data_obj:

    data_list = [line.rstrip('\n') for line in data_obj.readlines()]