擅长:python、mysql、java
<blockquote>
<p>Return True if path refers to an
existing path. Returns False for
broken symbolic links. On some
platforms, this function may return
False if permission is not granted to
execute os.stat() on the requested
file, even if the path physically
exists.</p>
</blockquote>
<p><a href="http://docs.python.org/library/os.path.html#os.path.exists" rel="nofollow noreferrer">http://docs.python.org/library/os.path.html#os.path.exists</a></p>