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<title>2 PEP
237: Unifying Long Integers and Integers
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<H1><A NAME=
"SECTION000300000000000000000">
2 PEP
237: Unifying Long Integers and Integers
</A>
The lengthy transition process for this PEP, begun in Python
2.2,
takes another step forward in Python
2.4. In
2.3, certain integer
operations that would behave differently after int/long unification
triggered
<tt class=
"exception">FutureWarning
</tt> warnings and returned values
limited to
32 or
64 bits (depending on your platform). In
2.4, these
expressions no longer produce a warning and instead produce a
different result that's usually a long integer.
The problematic expressions are primarily left shifts and lengthy
hexadecimal and octal constants. For example,
<code>2 << 32</code> results
in a warning in
2.3, evaluating to
0 on
32-bit platforms. In Python
2.4, this expression now returns the correct answer,
8589934592.
<p class=
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</p>
<dl compact=
"compact" class=
"seerfc">
<dt><a href=
"http://www.python.org/peps/pep-0237.html"
title=
"Unifying Long Integers and Integers"
>PEP
237,
<em>Unifying Long Integers and Integers
</em></a>
written by Moshe Zadka and GvR. The changes for
2.4 were implemented by
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