Uncompyle6 pyc to py pyc files back to . However, Python code can be compiled into bytecode in the form of `. Compile Python source code files into pyc binary files based on Python version 3. py file: o pip install uncompyle6 uncompyle6 -o output_directory __pycache__\example. Step 1. a multi-threads tool for decompile exe,elf,pyz,pyc packed by python which is base on pycdc and uncompyle6. We include Dropbox's Python 2. Contribute to pwxiao/uncompyle6 development by creating an account on GitHub. Why this? Uncompyle6 is awesome, but it has a fundamental problem in the way it handles control flow. I have extracted the . 6-3. py -p [PATH] OUTPUT It will produce uncompiled files in a decompiled named folder. pyc文件）中恢复出近似的源代码。 尽管它可能无法完全恢复原始代码中的注释和命名空间，但它提供的信息通常足以帮助开发者理解程序的工作原理。 Aug 31, 2023 · In Python 3. pyc files are created by the Python interpreter when a . I tried decompyle3, uncompyle6, but the outcome was as follows: Decompyle3 requires Python 3. I'm trying to decompile it from PYC to PY then I've some changes I want to make it in PY then I want to compile the PY to PYC again without mis May 18, 2024 · pydumpck is a multi-threads tool for decompile exe,elf,pyz,pyc packed by python which is base on pycdc and uncompyle6. Contribute to BarakAharoni/pycDcode development by creating an account on GitHub. py Mar 1, 2025 · uncompyle6是一个开源的Python字节码反编译器，它可以从Python字节码（. - serfend/pydumpck Aug 29, 2024 · Make your python script SAFETY Background We know when we run Python script we can get the . How to Generate PYC Files From the command line, run python -m compileall your_file. 12 of py_compile module. pyc file, the bytecode. The successor to decompyle, uncompyle, and uncompyle2. General approach A GUI tool for uncompiling Python bytecode. I have 200 pyc files I need to convert in a folder. py This command will decompile the example. pyc Use uncompyle6 tool and type command: uncompyle6 flag. 13. Let’s have a look at the features, pros/cons, and usage details of the below given Python decompilers and then select the best Python decompiler that can fulfill your specific requirements. Install uncompyle6 pip install uncompyle6 pip install uncompyle6 Usage: python pyc2py. A native Python cross-version decompiler and fragment decompiler. Our tool is fast, accurate, and easy to use. py` files), but sometimes, for security or intellectual property reasons, it may be distributed in a compiled form (`. 5 language features are used. x versions should work pretty well, and even partial decompilation is better than losing everything. Is there anyone with any ideas? This took me many weeks to make and I don't want to, and probably can't, rewrite it all. uncompyle6 translates Python bytecode back into equivalent Python source code. See feedback from the developer on this topic in the below tickets: Nov 14, 2025 · Python is a high - level, interpreted programming language known for its simplicity and readability. Aug 13, 2025 · Altered . However, the py file that generated by pyc file is 0 byte The original file's name is flag. One of these tasks need us to decompiling Python bytecode 3. pyc file will be saved in the __pycache__ directory. Dec 25, 2015 · uncompyle6 translates Python bytecode back into equivalent Python source code. pyz . pyc' to '. py back. py' script. py, but encountered errors with unrecognized magic numbers. py. pyo` files). For more information, visit the Uncompyle6 repo. pyc file. pyc > decompiled_example. Nov 22, 2023 · USEAGE pip install uncompyle6 python decompile_pyc_recursively. Python PYC Bytecode Decompilation. 11. 7. Enter the path where the . x versions. It is not a good behavior but in China, a lot of people are using it. pyc files in your directory. py /User/src '. What is a . 8, it is recommended to use the uncompyle6 decompile engine. Just upload your file and get the decompiled source code in a few seconds. 12 Aug 2, 2019 · Uncompyle6 translates Python bytecode back into equivalent Python source code. 10 pyc files. Dec 25, 2020 · How to use uncompyle6 to decompile . Contribute to FuturisticGoo/UnPYC development by creating an account on GitHub. Rename the file: flag. No installation required. I tried to use uncompyle6, uncompyle3, decomyle3, and unpyclib but they all can't do anything because the . 9 and above might be a bit problematic to deal with using the well known tools. In this blog post I’ll explain my approach at dealing with such samples, but for completenes I’ll also briefly go though the general approach with pyinstaller binaries. It accepts bytecodes from Python version 3. pyc files, then you know that versions 3. Can you guide me ? Thank you. 13 introduced changes that caused uncompyle6 and decompyle3 to fail with errors like: Unsupported Python version, 3. That's why there are various tools, all with limitations and bugs. pyc file and write the decompiled code to a new file named decompiled_example. 11 because the old way that everyone Jan 17, 2024 · A Python decompiler has to explicitly support each version of Python; lying to it (by editing the header) is unlikely to help, as the bytecode format actually changes every time the magic number changes. Mar 11, 2024 · Problem Formulation: Python developers often need to debug or analyze their compiled bytecode to understand what’s happening under the hood, optimize performance, or for educational purposes. However, Python 2. Decompile 3 has the latest pyc to py methods (decompilation), but it hasn't updated for python 3. pyo` files. But there are situations where you might need to decompile these compiled files, like when you want to understand someone else's code, debug Jan 5, 2021 · I have a compiled python code with the PYC extension. And BOOMMMMMMM!!! A common issue encountered involves an incomplete Python bytecode file resulting from the unpacking process with unpy2exe or pyinstxtractor, which then fails to be recognized by uncompyle6 due to a missing Python bytecode version number. Tools to try Uncompyle6 works, with some bugs, for Python up to 3. 8, which is not available. For decompilation of older Python bytecode, see uncompyle6. pyc file or equivalent in-memory bytecode, and the desired output is a readable disassembly that shows the Python virtual machine instructions Hi, in this video I am going to show how to extract python 3. your_filename. pyc file? . py file is imported. 9 or 3. 7-3. 0. 6. Subscribed 1K 121K views 2 years ago How to Unpack Python . I tried decompyle3, uncompyle6, but output was like this: Error: decompyle3 requires Python 3. pyc files to . 10 pyc files with ease using our online tool. 9 yet as that update takes a very long time to create. pyc File: o Now, you can use the uncompyle6 tool to decompile the . pyc exists. Decompilation attempts with uncompyle6 and decompyle3 were unsuccessful due to unrecognized magic numbers. 9 (the developer of decompyle3 said that he is focusing more on his main job and that he doesn't have time to create this update as the 3. And it will most likely never happen for 3. 8的解决方法） Mar 1, 2016 · The ones I know about that handle Python 3. Sep 23, 2025 · 本文介绍了Python反编译工具Uncompyle6的使用，包括其安装与基本命令行操作。针对pyc文件中缺失MagicNumber导致的反编译问题，文章详细阐述了如何获取不同Python版本的MagicNumber，以及如何修复pyc文件的头部信息以完成反编译。此外，还提供了一个获取MagicNumber的开源工具Pyinstxtractor的源码分析过程。 Oct 1, 2025 · I gave a talk on this at BlackHat Asia 2024. 8, spanning over 24 years of Python releases. 8 What I should use? normally i would use pylingual but file is too big, I tried getting the bytecode txt but is there a way I can convert the bytecode text into readable python or directly the pyc file? I havent found anything working with python 3. py file in Python using the uncompyle6 library. Apr 6, 2023 · Now set this either globally or locally with, pyenv global 3. 使用uncompyle6反编译pyc文件（附报KeyError和Error: uncompyle6 requires Python 2. py source file - jazlopez/py-recursive-uncompyle6 We would like to show you a description here but the site won’t allow us. 5, while pycdc (written in C++) is still a little lacking here. py file from . pyc file back to a . 10. pyc Automatically a new . 31. 10 (and your bytecode is built for 3. 9. The input for this task is Python bytecode, typically a . I am aware of converting pyc to py files through uncompyle6 -o . I accidentally deleted my . pyc file to Jul 6, 2025 · This article shows how to extract PYC files from a PyInstaller-packed EXE using pyi-archive_viewer and decompile them to Python source code with uncompyle6. The compiled . Now to make it work, uncompyle6 _pycFileHere_. 9 bytecode and they all complain about it. If the pyc file version is <= Python 3. Python compiled files, or PYC files, are compiled files written in the Python programming language. 8. The main difficulty is that the opcode in the Python environment is replaced. pyc Python files" outlines a process for converting compiled Python bytecode files back into their source code. 8 (. How to decomplied pyc to py to read code ? I used this sofware but it's not working. It accepts bytecodes from Python version 1. Overview When Python reads code, it first converts the instructions into bytecode. Mar 23, 2024 · Learn how to convert a . 10). 0, for decompilation As of this writing, no existing version of uncompyle6 works for Python 3. 9, I want to decompile a PYC file. Check with, python --version. This tutorial provides a step-by-step guide and includes a code example. pyc file Run: uncompyle6 -o . py file will be created with the same existing . Converts pyc files that exist in subfolders to py files. ly/python-390more Sep 4, 2023 · I lost my source code and tried to retrieve it again. I have 200 pyc files I need to convert in a folder. It begins by instructing users to install the uncompyle6 tool via pip. exe . Decompiling a Python file means converting the compiled bytecode back into its original or a Could that be the problem? I also have a Linux machine, should I try on there? Using python_exe_unpack. cpython Dec 10, 2022 · In this tutorial, you’ll be learning the basic tools to decompile a python ‘. Contribute to rocky/python-uncompyle6 development by creating an account on GitHub. 8, and works well for 2. py **:** Attempted extraction with python_exe_unpack. Python code is usually distributed in its source form (`. pyc > flag. Try it today! Oct 11, 2021 · I want to decompile PYC file in Python 3. pye is safety than . 5 bytecode and some PyPy bytecodes. pyc’ files. pyc header formats For example, Python 3. pyc however as I have so many pyc files, this would take a long period of tim Dec 5, 2024 · Discover effective methods for decompiling Python PYC files back to their original PY source code. Uncompyle6 can decompile pyc files ranging from Python versions 2. pyc`文件）还原为可读的源代码。 `uncompyle6`是一个广泛使用的反编译工具，支持Python2和Python3。 The article titled "How to decompile compiled . py -> flag. Recommended Decompile the . Sep 16, 2025 · These tools are well-equipped for tasks like: exe to py pyc to py pyo to py pyd to py pyz to py The below list contains free, paid, open-source, and online Python decompilers. py ---------- Python 3. 批量pyc反编译工具. Compiling Python code can offer benefits such as faster startup times and some level of code obfuscation. 0 to version 3. Jan 29, 2025 · uncompyle6 example. pyc files and in the __code__ attribute of function objects A cross-version Python bytecode decompiler. 5 bytecode and some PyPy bytecode. pyc file is 3. Ok, I’ll say it: this Free PYC converter – securely convert PYC files to PY, EXE, PYTHON, PDF, JPG or Windows online. pyc file) into py file. 4 to 3. Nov 10, 2021 · Hello everyone. But these opcodes appear only when new Python 3. Step-by-step guidance on various tools and techniques. We are the best decompiler for Python 3. Now to get it implemented for the terminal if restart doesn't work, source ~/. 3 to version 3. 11 or lower EXEcutables and then decompile it. py, but unfortunately, I have gotten this error: invalid pyc/pyo file - Magic value mismatch! Is there any tool for code written with python 3. pyc however as I have so many pyc files, this would take a long period of time. Scan directories recursively decompiling . pyc file to a . We can use AES to encrypt the . We include Dropbox’s Python 2. bashrc. Introduction decompyle3 translates Python bytecode back into equivalent Python source code. elf to . 3 To decompile compiled . py Here are my procedures. Mar 13, 2011 · Intro Python decompilation is a hard problem, particularly for recent 3. 7 on. pyc file and used tool to decompile it back to . For instance: a = 2 is converted into LOAD_CONST 1 STORE_FAST 0 The latter form is typically stored in . pyc file name. Nov 14, 2025 · Python is a high - level, interpreted programming language. 5? I want to get my . pyc . How to make your python script safety ? I want to invent a new kind of file pye. But there are some tools that can decompile . pyc python3 files, I used uncompyle6 in my current Ubuntu OS as follows: Installation of uncompyle6: pip3 install uncompyle6 To create a . Recently i've found a new way to decrypt python 3. pyc` or `. py to compile with your python version. . ------------------------------------------------------------Explore my tutorials: https://nikhil Mar 31, 2025 · A Python 3 decompilerpygetsource pygetsource is a decompiler for Python 3, aiming to convert compiled bytecode instructions back into Python code. py files. Is it even possible to do this right now? Mar 9, 2021 · Sadly enough, it's currently impossible. Jan 3, 2024 · If you ever needed to decompile python . 9 python update really Jan 17, 2024 · Uncompyle6 convert pyc to py file python 3 (Whole directory) I have 200 pyc files I need to convert in a folder. 7 and earlier 3. 5 (and other Python versions) are: uncompyle6 pycdc [Disclamer: I develop 1] uncompyle6 (written in Python) handles opcodes introduced in Python 3. sometimes its py-file result not exactly right ,maybe could use uncompyle6. Aug 9, 2023 · Simple replacement of opcode in pyc Recently I did a pyc reverse problem. This video shows how to decompile pyc files using uncompyle6. Feb 26, 2022 · I did try uncompyle6, decompyle3, and others, but none of them worked with Python 3. 9 : https://bit. Decompile Python 3. pyc files. Finally to install uncompyle6, pip install uncompyle6. py files but after digging around, I found a . このツールは、PyCファイルのデコンパイルをオンラインで行うための便利なツールです。 Apr 26, 2020 · 3 i am doing the CTF-like challenges. So the likelihood of running into this in pycdc may be small if Installing uncompyle6 in Kali Linux Python Bytecode Decompiler: Compiled to Source code conversion Dec 15, 2024 · python uncompyle6 使用，#PythonUncompyle6使用指南在Python开发中，反编译工具是一类相对少见但十分重要的工具。 它们可以将编译过的字节码文件（`. pyc或. jrbaa perxo wgyo khrxo jtw hpxpfp wzfhfie oylmfm kxb bvjh yknat rpqmh judohix zfrlp hjjum