擅长:python、mysql、java
<p>你可以这样写一个文件</p>
<pre><code>with open('myfile.txt', 'w') as f:
f.write(rUsername)
</code></pre>
<p>一个简单的程序,它要求用户输入用户名,并检查用户名是否在文件中,如果不存在,它会将用户名写入文件,从而创建一个新的用户,用这个逻辑你应该在路上</p>
<pre><code>while True:
username = input('please enter your username or exit to quit the program')
if username == 'exit':
break
else:
with open('myfile.txt', 'r') as f:
for line in f:
print(line)
if username == line:
print('you belong here')
break
else:
with open('myfile.txt', 'a') as f:
f.write(username)
print('You dont belong but your name has been saved')
break
</code></pre>