比较两个CSV文件并导出Python中的异同？

import csv

def compare_csv(file1, file2, output_file):
    with open(file1, 'r') as f1, open(file2, 'r') as f2, open(output_file, 'w', newline='') as output:
        reader1 = csv.reader(f1)
        reader2 = csv.reader(f2)
        writer = csv.writer(output)
        
        # 读取文件头部并写入输出文件
        header1 = next(reader1)
        header2 = next(reader2)
        writer.writerow(['Field', 'In File 1', 'In File 2'])
        
        # 比较每一行数据
        for row1, row2 in zip(reader1, reader2):
            for field1, field2 in zip(row1, row2):
                if field1 != field2:
                    writer.writerow([header1[row1.index(field1)], field1, field2])

compare_csv('file1.csv', 'file2.csv', 'output.csv')