擅长:python、mysql、java
<p>你的验证部分可以更简单,试试这样的方法</p>
<pre><code>while x == 1:
user = raw_input(">> ")
usernames = [i.split()[0] for i in passwr]
if user.lower() not in usernames:
x = 0
else:
print 'Sorry, that\'s already in use!'
</code></pre>
<p>然后输出</p>
<pre><code>What's your username?
>> Username1
Sorry, that's already in use!
>> Username2
Sorry, that's already in use!
>> Username3
What's your pw?
>> Password
</code></pre>
<p>以及文件内容</p>
<pre><code>username1 Password
username2 Password
Username3 Password
</code></pre>