dic = {2:'bob',3:'alice'} output = open('/Users/Air/itchat/push.txt','wb') for i in dic: print (i,dic[i]) write_str = str(i) + ' ' + str(dic[i]) + '\n' print(type(write_str)) output.write(write_str) output.close()PyCharm运行报错如下：
2 bob Traceback (most recent call last):
File "/Users/Air/itchat/test.py", line 8, in
output.write(write_str)TypeError: a bytes-like object is required, not 'str'
Process finished with exit code 1
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Change the opening method to w, do not use wb. b stands for binary
用wb打开，需要encode
`dic = {2:'bob',3:'alice'}
output = open('/Users/Air/itchat/push.txt','wb')
for i in dic:
output.close()`