比较相同的文件

Question

我正在比较输出另一个txt文件的2个txt文件，如果有区别的话。 （这很好）

with open('master.txt','r') as masterfile:
    with open('file','r') as usedfile:
        difference = set(masterfile).difference(usedfile)

with open('text3.txt', 'w') as file_out:
    for line in difference:
        file_out.write(line)

有没有办法，如果两个文件相同，然后在第3个txt文件（test3.txt）中添加“ALL GOOD”字样，目前它只是创建一个空白文件。

Answer 1

您可以检查difference是否有价值，否则写"ALL GOOD"

例如：

with open('master.txt','r') as masterfile:
    with open('file','r') as usedfile:
        difference = set(masterfile).difference(usedfile)

with open('text3.txt', 'w') as file_out:
    if difference:
        for line in difference:
            file_out.write(line)
    else:
        file_out.write('ALL GOOD')