python查找文本txt文件重复行

d = {}
for line in open('addrList.txt'):
    d[line] = d.get(line, 0) + 1 
fd = open('addrList_repeat.txt', 'w')

repnum = 0

for k, v in d.items():
	if v > 1:
		fd.write(k)
		repnum += 1


print("重复项目个数：" + str(repnum))
	
fd.close()