如何验证.csv文件中是否包含所有值

import csv

# 读取.csv文件
def read_csv_file(file_path):
    with open(file_path, 'r') as file:
        reader = csv.reader(file)
        data = list(reader)
    return data

# 验证.csv文件中是否包含所有值
def validate_csv_values(file_path, expected_values):
    data = read_csv_file(file_path)
    found_values = []
    for row in data:
        for value in row:
            if value in expected_values:
                found_values.append(value)
    missing_values = set(expected_values) - set(found_values)
    if len(missing_values) == 0:
        print("验证通过，.csv文件中包含所有值。")
    else:
        print("验证未通过，.csv文件中缺少以下值：")
        for value in missing_values:
            print(value)

# 示例使用
file_path = 'example.csv'
expected_values = ['value1', 'value2', 'value3']
validate_csv_values(file_path, expected_values)