ImportError: No module named Foundation

user_130427 0
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I am trying to follow the instructions for the accepted answer to "PyObjC development with Xcode 3.2". I will repost them here since I don't have enough rep to comment on the actual question:

Here's what I have done to get PyObjC working in Snow Leopard:

  • Using the Finder, I went to Go > Connect to Server... and connected to http://svn.red-bean.com/pyobjc/trunk/pyobjc/pyobjc-xcode/ as a guest.

  • I then made a folder called Xcode on my local system at ~Library/Application Support/Developer/Shared/Xcode/. (You may already have this folder, but I hadn't customized anything for myself yet).

  • I copied the File Templates folder from the red-bean server into my new Xcode folder.

  • Copied the Project Templates folder to some other place, for example, the Desktop.

  • Using the Terminal, navigated to the temporary Project Templates folder on my Desktop and ran this command to "build" the template.:

$ cd ~/Desktop/Project\ Templates/

$ ./project-tool.py -k -v --template ~/Desktop/Project\ Templates/Cocoa-Python\ Application/CocoaApp.xcodeproj/TemplateInfo.plist Cocoa-Python\ Application ~/Library/Application\ Support/Developer/Shared/Xcode/Project\ Templates/Cocoa-Python\ Application

When I try to run the line that starts with ./project-tool.py, I get the following error in Terminal:

Traceback (most recent call last):  
  File "./project-tool.py", line 22, in <module>  
     from Foundation import NSDictionary  
 ImportError: No module named Foundation

I am running Snow Leopard and have installed Xcode 3.2.1 and have read that this module should already be installed and working. I've read that you can test if the PyObjC modules are working by running >>> import objc in the Python command-line. When I run this, I get:

>>> import objc
Traceback (most recent call last):  
  File "<stdin>", line 1, in <module>  
ImportError: No module named objc

Could anyone help me dispel this error? It seems like I should be able to do all of this automatically with my Snow Leopard installation, but I can't.

pyobjc osx-snow-leopard xcode python
10 Answers
user_80984810

I found the foundation folder in /usr/local/lib/python3.9/site-packages/ next to the AppKit folder. After renaming it to Foundation (with uppercase F), the import worked. The Filesystem is not case-sensitive but it seems some part of the import implementation is.

user_4406570

Saw it mentioned in another comment and I too ran into this problem due to installing Python via homebrew. My pyobjc installation wound up going to the Python homebrew installation, yet my pythonpath was linked to the Python that comes bundled with macOS, so there was this big disconnect and I had no luck getting pythonpath re-routed in .zshrc or .zprofile.

In the end, these steps resolved the issue:

  1. brew uninstall python
  2. pip3 install -U pyobjc
user_110724180
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