Possibly because after python 3.3 intended command is not python, but simply py
Detailed explanation here

And short answer to your question:
check if powershell command py -0p --list-paths finds any versions.

Answer from halt9k on Stack Exchange
Discussions

Python not found by command prompt
I have installed Python in Windows 11 and saved a small script called unicode.replacer.py In the command prompt, in the correct directory, when I attempt to execute: python unicode.replacer.py command prompt reports: Python was not found. Any suggestions welcome. More on discuss.python.org
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16
0
February 11, 2024
Python can't find file
I created my Python per the blog, created a Script and assigned it to the environment but not matter what script we try and run we get this error We are on version 4.2.11 [INFO]C:\REC\Python311\python.exe: can't open f… More on forums.ironmansoftware.com
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13
0
April 18, 2024
bug: Python install is not recognized by Powershell
Was trying to update the pip when I received error:" Python was not found" So far: Went to Manage App Execution Aliases Turned off both python options New error: "python.exe: The ter... More on github.com
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3
December 31, 2023
can't run python in powershell - Stack Overflow
Sorry about the chinese character in this picture. It basicly mean "this is no such program" when I try to run command "python" in powershell。 But it works when I run "pyth... More on stackoverflow.com
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Reddit
reddit.com › r/learnpython › 'python' not recognized in powershell
r/learnpython on Reddit: 'python' not recognized in Powershell
May 26, 2023 -

I have read through some previous posts with the same issue but the solutions are not working for me. Hoping someone can point to my error.

  1. Trying to delete Python reference in Windowsapps directory using windows explorer. I get an error message that does not let me delete them.

  2. In environmental variables I moved windows apps down below the python line. I still get an error message in Powershell that Python not found.

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Ironman Software
forums.ironmansoftware.com › powershell tools
Python can't find file - PowerShell Tools - Ironman Software Forums
April 18, 2024 - I created my Python per the blog, created a Script and assigned it to the environment but not matter what script we try and run we get this error We are on version 4.2.11 [INFO]C:\REC\Python311\python.exe: can't open file 'C:\\ProgramData\\UniversalAutomation\\Repository\\{scriptPath}': [Errno 2] No such file or directory
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GitHub
github.com › pyenv-win › pyenv-win › issues › 573
bug: Python install is not recognized by Powershell · Issue #573 · pyenv-win/pyenv-win
December 31, 2023 - New error: "python.exe: The term 'python.exe' is not recognized as a name of a cmdlet, function, script file, or executable program." Enviroment Variables: PYENV C:\Users\User.pyenv\pyenv-win PYENV_HOME C:\Users\User.pyenv\pyenv-win PYENV_ROOT C:\Users\User.pyenv\pyenv-win\ ... Python: 3.12.0 (set as global) Using Powershell terminal in VSCode (Does the same opening a seperate powershell terminal)
Author   TheGngrbredmann
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CodeWithHarry
codewithharry.com › blogpost › solving-python-not-found-run-without-arguments
[Solved] python was not found; run without arguments to install from the microsoft store, or... | Blog | CodeWithHarry
I bought my new Asus laptop and after trying to run Python I encountered the "Python was not found; run without arguments to install from the Microsoft Store or disable this shortcut from Settings > manage app execution aliases" error. If you too have recently faced this issue, I have found a simple solution.
Find elsewhere
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Quora
quora.com › Why-wont-Python-work-in-PowerShell-for-me
Why won't Python work in PowerShell for me? - Quora
Common root causes: PATH misconfiguration, multiple conflicting installations, Microsoft Store stubs, or PowerShell execution policy blocking venv activation. Practical next steps: use py -3 to avoid PATH issues, reinstall from python.org with ...
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Stack Overflow
stackoverflow.com › questions › 65905209 › cant-run-python-in-powershell
can't run python in powershell - Stack Overflow
You probably do not have "python" in your PATH variable. This thread should help you : Python not working in command prompt? ... Sign up to request clarification or add additional context in comments.
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PowerShell Forums
forums.powershell.org › powershell help
Cannot run .py files in PowerShell - PowerShell Help - PowerShell Forums
March 27, 2019 - Can someone assist me with the possible reasons why I cannot run .py files in PowerShell. I can run them in CMD fine. I thought PowerShell carried the same basic functionality as the CMD has? Below is the error I am getting? Thank you. PS C:\Users\ajoh\Desktop\Python\py4e\ex_03> Ch_03_Score_Spy.py Ch_03_Score_Spy.py : The term ‘Ch_03_Score_Spy.py’ is not recognized as the name of a cmdlet, function, script file, or operable program.
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Visual Studio Code
code.visualstudio.com › docs › python › environments
Python environments in VS Code
November 3, 2021 - To discover environments in custom locations, update the python-envs.workspaceSearchPaths setting: ... This setting must be configured at the workspace or folder level, not user level.
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CodeWithHarry
codewithharry.com › blogpost › python-is-not-recognized-error
[Solved] The term 'python' is not recognized as the name of a cmdlet, function,..... | Blog | CodeWithHarry
The term 'python' is not recognized as the name of a cmdlet, function, script file, or operable program. Check the spelling of the name, or if a path was included, verify that the path is correct and try again.
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PyInstaller
pyinstaller.org › en › stable › installation.html
How to Install PyInstaller — PyInstaller 6.19.0 documentation
If you cannot use the pyinstaller command due to the scripts directory not being in PATH, you can instead invoke the PyInstaller module, by running python -m PyInstaller (pay attention to the module name, which is case sensitive).
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Visual Studio Code
code.visualstudio.com › docs › languages › python
Python in Visual Studio Code
November 3, 2021 - For more specific information on debugging in Python, such as configuring your launch.json settings and implementing remote debugging, see Debugging. General VS Code debugging information is found in the debugging document.
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Python.org
discuss.python.org › python help
Module not found but it's already installed - Python Help - Discussions on Python.org
March 26, 2024 - I’m fairly new to Python. I use Python 3.11.8 (what MS Azure supports, my eventual production environment) on Windows 10. I’m testing a program on Windows 10. I have created and activated my virtual environment in the cmd.exe window. My program is in c:\users\MYUSER\onedrive - CONAME\documents\pythonprojects\CONAME\CUSTNAME\buscard\buscard.py This program worked last week just fine.
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ActiveState
activestate.com › home › resources › quick read › how to install pip on windows
How to Install Pip on Windows - ActiveState
January 24, 2024 - Important Notice: Due to the AWS outage, you may experience some technical issues while using our services today · Introducing ActiveState Curated Catalogs. Total Control for Security. Zero Friction for Developers. Vetted components from 79M+ built-from-source packages → Learn More ... If you’re using an older version of Python, pip needs to be installed.
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Bobby Hadz
bobbyhadz.com › blog › python-was-not-found-run-without-arguments-to-install
Python was not found; run without arguments to install from the Microsoft Store | bobbyhadz
Python was not found but can be installed from the Microsoft Store: https://go.microsoft.com/fwlink?linkID=2082640 · A quick fix you should try is to use the py alias instead of python when issuing commands.
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YouTube
youtube.com › watch
[Fixed] The term 'Python' is not recognized as the name of a cmdlet, function, or operable program - YouTube
[Fixed] The term 'Python' is not recognized as the name of a cmdlet, function, or operable programSometimes after install the Python, we get an issue that Py...
Published   July 15, 2020