Python 3.7环境下PyInstaller运行异常（缺失encodings模块）求助

Hey there, let's work through this PyInstaller issue you're hitting with Python 3.7.0b1 on Windows 10 64-bit. Pre-release Python versions plus older PyInstaller builds often cause these kinds of hiccups, so here's a step-by-step breakdown to fix it:

Your problem stems from two main sources:

• Python 3.7.0b1 is a pre-release version: PyInstaller 3.3.1 doesn't have full compatibility with its newer internal structures.
• Missing system dependencies & unbundled modules: The api-ms-win-crt-*.dll warnings point to missing Windows runtime libraries, and the encodings module isn't being automatically packaged by PyInstaller.

1. Upgrade PyInstaller to a Python 3.7-compatible version #

PyInstaller 3.3.1 is too old to properly support Python 3.7. You'll need a newer build that includes fixes for this version:

• First uninstall the old version:

  pip uninstall pyinstaller -y
  

• Install the latest stable release (version 3.4+ adds Python 3.7 support; 4.x+ is recommended):

  pip install pyinstaller --upgrade
  

• If stable still has issues, try the development build which often has pre-release compatibility fixes:

  pip install https://github.com/pyinstaller/pyinstaller/archive/develop.zip
  

2. Force-include the encodings module #

If upgrading doesn't resolve the missing encodings error, manually tell PyInstaller to bundle it:

• Add the --hidden-import flag to your pack command:

  pyinstaller --hidden-import encodings your_test_script.py
  

• Alternatively, create a .spec file (run pyinstaller your_test_script.py once to generate it), then add encodings to the hiddenimports list:

  # Example snippet from the .spec file
  a = Analysis(['your_test_script.py'],
               pathex=['C:\\path\\to\\your\\script'],
               binaries=[],
               datas=[],
               hiddenimports=['encodings'],  # Add this line
               hookspath=[],
               runtime_hooks=[],
               excludes=[],
               win_no_prefer_redirects=False,
               win_private_assemblies=False,
               cipher=None,
               noarchive=False)
  

  Then re-pack using the spec file:

  pyinstaller your_test_script.spec
  

3. Resolve missing api-ms-win-crt-*.dll warnings #

These DLLs are part of the Windows Universal CRT, which Python 3.7 depends on. Fix this by:

• Installing the Visual C++ Redistributable for Visual Studio 2017 (this is the official way to get these libraries; make sure to grab the 64-bit version matching your system).
• If you can't install the redistributable, manually copy the missing DLLs from your Python installation directory (C:\apps\python\python37) or C:\Windows\System32 into the folder where your packaged executable lives.

4. Switch to a stable Python 3.7 release (optional but recommended) #

Since you're using a beta version of Python 3.7, you might run into other unforeseen compatibility issues. Consider upgrading to the latest stable Python 3.7 release (like 3.7.10) — pre-release builds are great for testing, but not ideal for production or tooling compatibility.

内容的提问来源于stack exchange，提问作者joe