擅长:python、mysql、java
<p>您应该在内部循环中重新打开<code>File2</code>,或者使用<code>file.seek</code>跳到文件的开头,因为在第一次迭代之后,文件指针位于<code>File2</code>的末尾。在</p>
<p>关于<code>file.seek</code>的帮助:</p>
<pre><code>>>> print file.seek.__doc__
seek(offset[, whence]) -> None. Move to new file position.
Argument offset is a byte count. Optional argument whence defaults to
0 (offset from start of file, offset should be >= 0); other values are 1
(move relative to current position, positive or negative), and 2 (move
relative to end of file, usually negative,....
</code></pre>