PyPacker: a dumb little script for turning Python apps into standalone executable packages on Windows

Related tags

Build Tools python pyinstaller-alternative
Overview

PyPacker: a dumb little script for turning Python apps into standalone executable packages on Windows

PyPacker is my attempt at creating a way to make Python apps fully portable on Windows. It does this by performing live program analysis to determine what to pack up.

Rationale

Most systems for turning Python apps into standalone programs analyze the program to determine what and how to pack things up, but don't actually run the program in question, and so have no information about the program's runtime behavior.

PyPacker runs the program and makes a record of all the imports actually used during the program's lifetime. It then uses this information to create a standalone redistributable of the application.

The downside of this approach is that you have to perform at least one run with the program that provides the broadest possible program coverage -- e.g., all imports are fully executed, etc.

The upside is that PyPacker knows exactly what to copy. Also, your trace files can be reused as long as no new program components have been added in the meantime.

Usage

Run it like so:

py -m pypacker -a entry_point.py

where entry_point.py is the entry point to your application.

Your application will launch. Run it and make sure you use as much of its functionality as possible, to generate the maximum possible coverage.

When your application exits, PyPacker it will generate a tracefile.json file that can be re-used for future runs (by just typing py -m pypacker in that directory). It will then package your application for redistribution.

The resulting redistributable will be placed in the dist subdirectory. A zipped version of the redistributable directory is also provided.

What PyPacker tries to do

  • The main program tree is turned into a .zip file (of .pyc files).
  • Any non-Python files in the main program tree are copied into a parallel directory off the root of the dist directory.
  • Usage of .pyd files and (some) .dlls are automatically detected as well and copied.
  • Third-party packages are also included.
  • Both console and windowed executables are provided.

Note that PyPacker works best with a program structure like this:

entrypoint.py
    \ appdir

where entrypoint.py is what's executed to start your app, and your actual app and all its files live in appdir and below. This makes it easier for PyPacker to detect data files that are adjacent to your application.

Caveats

Very buggy. Drastically incomplete. For instance, stuff like NumPy probably doesn't work yet.

License

MIT

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Comments
  • <filename>_console.exe crashes on startup

    _console.exe crashes on startup

    I sent the redistributable zip file for one of my projects to a few people (attached below). For one person, when opening client_console.exe, it flashes a black window (the console) for a split second before closing.

    • Installing the latest version of Python did not seem to help the issue.
    • They were on Windows 10
    • Others were able to run the same executable fine
    • The zip was extracted before the executable was ran

    None of us were able to recreate the issue. Sorry for lack of information on this issue, there really isn't much I can add other than this client_exe.zip

    opened by AlexanderJCS 2
  • How to use

    How to use

    It seems dumb but the usage thing is confusing to me. It doesn't tell as normal human tells, it's a text that is formal, which is confusing to me so please tell me some stuff about this.

    (sorry I'm pretty beginner(not really just very dumb))

    opened by InnocentHumanNiko 1
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