Loss of long modifier in Python 2.7.18

rocky / python-uncompyle6

A cross-version Python bytecode decompiler

GNU General Public License v3.0

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Closed andrem-eberle closed 1 year ago

andrem-eberle commented 1 year ago

Long modifier 'L' on number is being lost after decompiling.

Input file file.py:

v = 10L

python2.7 -m compileall file.py
uncompyle6 file.pyc

Output:

v = 10

L modifier is gone

L modifier included in the number

Python 3.8.16 for uncompyle6 Python 2.7.18 for compileall Ubuntu 16.0x

rocky commented 1 year ago

This is not a bug in this code base per se - no code needs to be changed here.

The problem is in xdis the cross disassembler and arises because Python 3 does not a "long" type nor needs to distinguish it from int.