Is it possible to decompile a compiled .pyc file into a .py file?
PythonDecompilingPycCompiledPython Problem Overview
Is it possible to get some information out of the .pyc file that is generated from a .py file?
Python Solutions
Solution 1 - Python
Uncompyle6 works for Python 3.x and 2.7 - recommended option as it's most recent tool, aiming to unify earlier forks and focusing on automated unit testing. The GitHub page has more details.
- If you use Python 3.7+, you could also try decompyle3, a fork of Uncompyle6 focusing on 3.7 and higher.
- Do raise GitHub issues on these projects if needed - both run unit test suites on a range of Python versions.
With these tools, you get your code back including variable names and docstrings, but without the comments.
The older Uncompyle2 supports Python 2.7 only. This worked well for me some time ago to decompile the .pyc bytecode into .py, whereas unpyclib crashed with an exception.
Solution 2 - Python
You may try Easy Python Decompiler. It's based on Decompyle++ and Uncompyle2. It's supports decompiling python versions 1.0-3.3
Note: I am the author of the above tool.
Solution 3 - Python
Yes, you can get it with unpyclib that can be found on pypi.
$ pip install unpyclib
Than you can decompile your .pyc file
$ python -m unpyclib.application -Dq path/to/file.pyc
Solution 4 - Python
Yes.
I use uncompyle6 decompile (even support latest Python 3.8.0):
uncompyle6 utils.cpython-38.pyc > utils.py
and the origin python and decompiled python comparing look like this:
so you can see, ALMOST same, decompile effect is VERY GOOD.
Solution 5 - Python
Decompyle++ (pycdc) was the only one that worked for me: https://github.com/zrax/pycdc
was suggested in https://stackoverflow.com/questions/8189352/decompile-python-2-7-pyc/10047631#10047631
Solution 6 - Python
Yes, it is possible.
There is a perfect open-source Python (.PYC) decompiler, called Decompyle++ https://github.com/zrax/pycdc/
Decompyle++ aims to translate compiled Python byte-code back into valid and human-readable Python source code. While other projects have achieved this with varied success, Decompyle++ is unique in that it seeks to support byte-code from any version of Python.
Solution 7 - Python
I've been at this for a couple hours and finally have a solution using Decompyle++:
- visit
https://cmake.org/download/and install CMake. - visit
https://github.com/zrax/pycdcand grab a copy of this repo:pycdc-master. - add
C:\Program Files\CMake\binto your system environment variables under PATH.
I suggest putting your pycdc-master folder into another folder, like anotherFolder.
Now you can run these commands in the command line:
cd anotherFolderto go into the folder that haspycdc-masterin it.cmake pycdc-mastercd ../to go up one directory,- then:
cmake --build anotherFolder
pycdc.exe will then be in anotherFolder\Debug.
Do something like pycdc.exe onlyhopeofgettingmycodeback.pyc in a console and it will print out the source code. I had Python 3.9.6 source code and nothing else was working.
Solution 8 - Python
Install using pip install pycompyle6
pycompyle6 filename.pyc
Solution 9 - Python
If you need to decompile a pyc but have python 3.9 installed you can force uncompyle6 to run. It's not perfect but it does work. Just edit site-packages\uncompyle6\bin\uncompile.py
def main_bin():
if not (sys.version_info[0:2] in ((2, 6), (2, 7), (3, 0),
(3, 1), (3, 2), (3, 3),
(3, 4), (3, 5), (3, 6),
(3, 7), (3, 8), (3, 9)
Just add the version you have installed in the same format as the others and save. It will at least run.