python 课后作业

跟我一起敲代码

def file_compare(f1_name,f2_name):
    f1 = open(f1_name)
    f2 = open(f2_name)

    count = 0
    differs = []

    for each in f1:
        each2 = f2.readline()
        if each == each2:
            count += 1
        else:
            differs.append(count)
            
    f1.close()
    f2.close()
    return differs


f1_name = input('请输入第一个文件名:')
f2_name = input('请输入第二个文件名:')

differs = file_compare(f1_name,f2_name)

if len(differs) == 0:
    print('没有不同')
else:
    print('文件%s和文件%s共有%d个不同' % (f1_name,f2_name,len(differs))
    for each in differs:
        print('第%d行不同' % each)

个人感觉没有问题，为啥倒数第二行'for each in differs:'，每次运行都会把冒号标红，蹦出来个invalid syntax

Twilight6

因为你第 28 行少了个右括号：

def file_compare(f1_name, f2_name):
    f1 = open(f1_name)
    f2 = open(f2_name)

    count = 0
    differs = []

    for each in f1:
        each2 = f2.readline()
        if each == each2:
            count += 1
        else:
            differs.append(count)

    f1.close()
    f2.close()
    return differs


f1_name = input('请输入第一个文件名:')
f2_name = input('请输入第二个文件名:')

differs = file_compare(f1_name, f2_name)

if len(differs) == 0:
    print('没有不同')
else:
    print('文件%s和文件%s共有%d个不同' % (f1_name, f2_name, len(differs)))
    for each in differs:
        print('第%d行不同' % each)