python读取csv文件后，打印内容再return返回内容，返回值为空

1、以下代码返回值是正确的

import os,csv

def read_csv(path):
    with open(path, 'r', encoding='utf-8') as f:
        res = csv.reader(f)
        return list(res)[1:]

if __name__ == '__main__':
    res = read_csv(os.path.dirname(os.getcwd()) + '\\testdata\\calcdata.csv')
    print(res)

2、以下代码返回值为空

import os,csv

def read_csv(path):
    with open(path, 'r', encoding='utf-8') as f:
        res = csv.reader(f)
        print(list(res)[1:])
        return list(res)[1:]

if __name__ == '__main__':
    res = read_csv(os.path.dirname(os.getcwd()) + '\\testdata\\calcdata.csv')
    print(res)

只是多了一个打印语句