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    <p>Don't worry about it. Python's garbage collector is good, and I've never had a problem with not closing file-pointers (for read operations at least)</p> <p>If you did want to explicitly close the file, just store the <code>open()</code> in one variable, then call <code>readlines()</code> on that, for example..</p> <pre><code>f = open("thefile.txt") all_lines = f.readlines() f.close() </code></pre> <p>Or, you can use the <code>with</code> statement, which was added in Python 2.5 as a <code>from __future__</code> import, and "properly" added in Python 2.6:</p> <pre><code>from __future__ import with_statement # for python 2.5, not required for &gt;2.6 with open("thefile.txt") as f: print f.readlines() # or the_file = open("thefile.txt") with the_file as f: print f.readlines() </code></pre> <p>The file will automatically be closed at the end of the block.</p> <p>..but, there are other more important things to worry about in the snippets you posted, mostly stylistic things.</p> <p>Firstly, try to avoid manually constructing paths using string-concatenation. The <a href="http://docs.python.org/library/os.path.html" rel="nofollow noreferrer"><code>os.path</code></a> module contains lots of methods to do this, in a more reliable, cross-platform manner.</p> <pre><code>import os y = open(os.path.join(dir, file), 'r') </code></pre> <p>Also, you are using two variable names, <a href="http://docs.python.org/library/functions.html#dir" rel="nofollow noreferrer"><code>dir</code></a> and <a href="http://docs.python.org/library/functions.html#file" rel="nofollow noreferrer"><code>file</code></a> - both of which are built-in functions. <a href="http://www.logilab.org/857" rel="nofollow noreferrer">Pylint</a> is a good tool to spot things like this, in this case it would give the warning:</p> <pre><code>[W0622] Redefining built-in 'file' </code></pre>
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    1. COThis was useful thanks. My friends think I am a genious but then I show them how this web site makes it all possible.
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