下面是一个使用Python代码来比较两个CSV文件并将差异打印到一个CSV文件的示例：

import csv

def compare_csv(file1, file2, output_file):
    # 读取第一个CSV文件
    with open(file1, 'r') as f1:
        csv1 = csv.reader(f1)
        data1 = [row for row in csv1]

    # 读取第二个CSV文件
    with open(file2, 'r') as f2:
        csv2 = csv.reader(f2)
        data2 = [row for row in csv2]

    # 比较两个CSV文件的内容
    differences = []
    for row1 in data1:
        found = False
        for row2 in data2:
            if row1[0] == row2[0] and row1[1] == row2[1]:
                found = True
                if row1 != row2:
                    differences.append(row1)
                break
        if not found:
            differences.append(row1)

    for row2 in data2:
        found = False
        for row1 in data1:
            if row1[0] == row2[0] and row1[1] == row2[1]:
                found = True
                break
        if not found:
            differences.append(row2)

    # 将差异写入输出CSV文件
    with open(output_file, 'w', newline='') as f:
        writer = csv.writer(f)
        writer.writerows(differences)

# 示例用法
compare_csv('file1.csv', 'file2.csv', 'output.csv')

上述代码中的file1.csv和file2.csv是要比较的两个CSV文件的文件名，output.csv是要输出的CSV文件的文件名。代码首先读取两个CSV文件的内容，并将其存储在data1和data2列表中。然后，它比较两个列表中的内容以找出差异，并将差异存储在differences列表中。最后，它将differences列表中的内容写入到输出CSV文件中。