python实现逐个读取txt字符并修改

import os with open((os.path.join('test.txt')), 'r') as f:	data=f.readlines()	for line in data:		odom=line.split()		num=map(int,odom)		lst=(list(num))Len=len(lst) for i in range(0,Len):	if lst[i]==255:		lst[i]=0	elif lst[i]==0:		lst[i]=1print(lst) with open((os.path.join('test_copy.txt')), 'w') as f:	for j in range(0,Len):		f.write(str(lst[j]))		f.write(' ')