Why is platform.processor() returning the wrong value when python is run from my editor?

Question

I occasionally like to use python from within org-mode in emacs? However, I've recently switched from intel architecture to m1 and this isn't working very well.

The pydantic module imports fine from my system python - but when I try to import it from within by editor python for some reason seems to be picking the wrong architecture.

From within emacs:

#+begin_src python :results output
  import sys
  print(sys.executable)
  import pydantic
#+end_src

: /Library/Developer/CommandLineTools/usr/bin/python3


Traceback (most recent call last):
  File "<stdin>", line 3, in <module>
ImportError: dlopen(/Users/tom/Library/Python/3.9/lib/python/site-packages/pydantic/__init__.cpython-39-darwin.so, 0x0002): tried: '/Users/tom/Library/Python/3.9/lib/python/site-packages/pydantic/__init__.cpython-39-darwin.so' (mach-o file, but is an incompatible architecture (have 'arm64', need 'x86_64')), '/System/Volumes/Preboot/Cryptexes/OS/Users/tom/Library/Python/3.9/lib/python/site-packages/pydantic/__init__.cpython-39-darwin.so' (no such file), '/Users/tom/Library/Python/3.9/lib/python/site-packages/pydantic/__init__.cpython-39-darwin.so' (mach-o file, but is an incompatible architecture (have 'arm64', need 'x86_64'))
[ Babel evaluation exited with code 1 ]

From a terminal, everything works fine:

python3
Python 3.9.6 (default, Mar 10 2023, 20:16:38) 
[Clang 14.0.3 (clang-1403.0.22.14.1)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
Could not open PYTHONSTARTUP
FileNotFoundError: [Errno 2] No such file or directory: '/Users/USER/.pythonrc.py'
>>> import sys
>>> print(sys.executable)
/Library/Developer/CommandLineTools/usr/bin/python3
>>> import pydantic
>>> 

(Note that the python executable is the same)

I did some digging and within my editor platform.processor() is returning i386 while from a python shell it is returning arm, which is confusing.

Why is the processor wrong from within my editor?

My suspicion is that it's something to do with some sort of path be it the system path, the library path, or python's path

Approaches tried

• This question: [https://stackoverflow.com/questions/72308682/mach-o-file-but-is-an-incompatible-architecture-have-x86-64-need-arm64e] seems like it might be relevant?
• platform is implemented in python. Looking at the source code is calling os.uname() directly and this seems to be lying about the architecture in my editor

#+begin_src python :results output
  import os
  print(os.uname())
#+end_src

#+RESULTS:
: posix.uname_result(sysname='Darwin', nodename='Danielas-MacBook-Air.local', release='22.4.0', version='Darwin Kernel Version 22.4.0: Mon Mar  6 21:00:41 PST 2023; root:xnu-8796.101.5~3/RELEASE_ARM64_T8103', machine='x86_64')

os.uname appears to be a builtin and I assume that it is implemented in C which makes it difficult to debug... but hoping that the shell uname commands works in the same way as os.uname it looks like uname -a is lying as well.

#+begin_src shell :results output
  uname -a 
#+end_src

#+RESULTS:
: Darwin computer.local 22.4.0 Darwin Kernel Version 22.4.0: Mon Mar  6 21:00:41 PST 2023; root:xnu-8796.101.5~3/RELEASE_ARM64_T8103 x86_64

I'm suspicious that some sort of emulation is going on...