如何比较两个列表并将差异写入文件？Python3

def compare_lists(list1, list2, output_file):
    set1 = set(list1)
    set2 = set(list2)
    
    diff1 = list(set1 - set2)
    diff2 = list(set2 - set1)
    
    diff = diff1 + diff2
    
    with open(output_file, "w") as file:
        for item in diff:
            file.write(str(item) + "\n")

# 示例用法
list1 = [1, 2, 3, 4, 5]
list2 = [4, 5, 6, 7, 8]
output_file = "diff.txt"

compare_lists(list1, list2, output_file)