python中怎么提取两个文本文档相同的内容

Question

如题所述

Answer 1

建议两个文件的末尾都留一个空行，否则最后一行可能匹配不到
fa = open('A.txt')

a = fa.readlines()
fa.close()
fb = open('B.txt')
b = fb.readlines()
fb.close()
c = [i for i in a if i in b]
fc = open('C.txt', 'w')
fc.writelines(c)
fc.close()