没有显示错误，但是运行代码时什么也没有显示

Question

我正在进行编程练习。总的来说，当有人输入球队名称时，它将显示该球队赢得世界大赛的次数。它从读取的文件中提取此信息。问题是，当我运行代码时，不会显示任何错误，但是在运行代码时它不会显示任何内容。我的问题是，我的打印功能或主要功能缺少什么？为什么我的代码运行时什么也没显示？我的代码在下面。

def team_from_file(file_name):
    readfile = open(file_name, 'r')
    team_list = []

    team = readfile.readline()

    while team != ' ':
        team_list.append(team)
        team = readfile.readline()

    return team_list

def times_won(user_team_name, list_of_winning_teams):
    winning_times = 0

    for current_win in range(len(list_of_winning_teams)):
        if list_of_winning_teams [current_win] == user_team_name:
             winning_times = winning_teams + 1

    return winning_teams

def print_times_won(winning_team_name, winning_times):
    print(winning_team_name, 'has won the World Series', winning_times)


def main():
    file_name = "WorldSeriesWinners.txt"
    win_team_list = team_from_file(file_name)   
    user_input = input('Please enter team name: ')
    winning_times = times_won(user_input, win_team_list)
    print_times_won( print_times_won, winning_times )

main()