擅长:python、mysql、java
<p>您可以使用<a href="https://docs.python.org/3/library/linecache.html#module-linecache" rel="nofollow noreferrer">linecache</a>标准库模块直接转到特定行<strong>PS无需打开文件<strong></p>
<pre><code>line = linecache.getline(file, num)
</code></pre>
<p>为了你的案子</p>
<pre><code>import linecache
ucc = open("USERNAME.txt", "r")
while x == "i":
print ("Please Enter Your Usename And Pasword!")
luser = input("USERNAME - ")
Lpass = input("PASSWORD - ")
for num, line in enumerate(ucc, 1):
if luser in line:
pw = linecache.getline("PASSWORD.txt", num)
print(line)
print(pw)
break
</code></pre>