3.7.4 (latest) install changes python to py and removes pip support

[Jim Elphick]

Follow up to previous email.

I was able to get a working version of python 3.7.4 on Windows.

Steps to resolve:


  1.  Uninstalled Python Launcher from my Windows machine
  2.  Uninstalled Python 3.7.3  ( many uninstalls and re-installs)
  3.  Deleted Python37 folder
  4.  Using python installer from python.org, reinstalled using Custom
  5.  Deselected PythonLauncher (i.e. do NOT install Python Launcher).  Kept all other options.

Now "python -version" returns python 3.7.4.  And, importantly, I am able to access and upgrade pip and pipenv.

Pip still threw an error when I attempted to upgrade to  pip 19.2.3, but it actually installed it successfully.  Pipenv upgraded with no issue.

Python is back!

Thank you.

Jim

From: Jim Elphick
Sent: Friday, October 11, 2019 11:03 AM
To: python-list at python.org
Subject: 3.7.4 (latest) install changes python to py and removes pip support

I upgraded my Python 3.7.3 windows install to 3.7.4 using the windows download from python.org.

After the install, the keyword "python" will no longer invoke python.  "python3" also fails.  "py" is now the only access to python.

                py -version returns  Python 3.7.4
                python -version returns the following.  The first is bash.  The second is from powershell
bash: python: command not found
python : The term 'python' is not recognized as the name of a cmdlet, function, script file, or operable program.

Previous to the upgrade, "python -version" returned 3.7.3.

This is much more than an inconvenience.  Pip has stopped working because it expects to find "python.exe".  pipenv also no longer executes.
                Pip -version  returns  (second is again powershell)
nothing in bash (empty string, no error)
Fatal error in launcher: Unable to create process using '"c:\program files\python37\python.exe"

Attempting to re-install pip from python fails to help.

I used the installer to completely remove python 3.7.4.  My version reverted to 3.6.6.  However, the problem with "py" instead of "python" persists.

Attempting to re-install pip (using 3.6.6) through "py -m pip install pip" claims "Requirement already satisfied".  But, pip continues to fail.  3.6.6 was also installed using download from python.org.

So ... I attempted to re-install 3.7.3 downloaded from python.org.  All of the above continues. "python" is no longer available. And pip is no longer available.

c:\program files\python37\python.exe does not exist.    Also, py.exe does not exist in that directory.

I had a similar problem with my MacOS install, but I did not lose access to pip and pipenv.

Any help would be appreciated for restoring my python 3.7 install.

Thank you for any help you can provide.

Jim