如何比较2个不同的csv文件并在不使用CSV-diff的情况下输出差异

import csv

def compare_csv(file1, file2):
    with open(file1, 'r') as f1, open(file2, 'r') as f2:
        csv1 = csv.reader(f1)
        csv2 = csv.reader(f2)
        
        diff = []
        
        for row1, row2 in zip(csv1, csv2):
            if row1 != row2:
                diff.append((row1, row2))
        
        return diff

file1 = 'file1.csv'
file2 = 'file2.csv'

diff = compare_csv(file1, file2)

if diff:
    for row1, row2 in diff:
        print("Row in file1:", row1)
        print("Row in file2:", row2)
        print("------")
else:
    print("No differences found.")