When creating a pipenv environment, I got addicted to "Value Error: Not a valid python path"

I used conda for the virtual environment, but now I'm going to use pipenv I was addicted to erasing Anaconda and trying to migrate.

Target error message

ValueError: Not a valid python path: 'C:/Users/<username>/Anaconda3/python.exe'

Cause

Because the Anaconda registry key wasn't completely erased pipenv was trying to reference and returned ValueError.

Prerequisites

• Windows 10 Home
• Python 3.7
• pipenv 2020.11.15

Solution

I will list three solutions in order of cleanliness.

Part 1

From https://github.com/pypa/pipenv/issues/4334 Delete the registry key so that it does not refer to Anaconda.

1. Enter "regedit" in "Win + R".
2. Delete the directory Computer \ HKEY_CURRENT_USER \ Software \ Python \ Continuum Analytics \ Anaconda37-64
   from the right click.

Part 2

From https://github.com/pypa/pipenv/issues/4334

cmd

pip install pipenv==2018.10.13

Replace with the old version.

Part 3

Modify C: \ Users \ <username> \ AppData \ Local \ Programs \ Python \ Python37 \ Lib \ site-packages \ pipenv \ vendor \ pythonfinder \ models \ windows.py.

windows.py(Line 113)

-            versions[py_version.version_tuple[:5]] = base_dir
+            try:
+                versions[py_version.version_tuple[:5]] = base_dir
+            except ValueError as e:
+                print(e)
+                continue

What I tried before I got to the solution

Searching for an error message to find a solution ...

--Uninstall Anaconda (conda clean-> Delete Anaconda directory) --Reinstall Python 3.7.9 --Delete C: \ Users .virtualenvs --Reinstall pipenv --Restart your PC

C: \ Users \ <username> \ AppData \ Local \ Programs \ Python \ Python37 \ Lib \ site-packages \ pipenv I looked inside and put a print statement in a place that seemed to be related and followed the process. → Is it the fastest to follow the error message from the bottom and handle the error at the error location?

TODO

--Deepen your understanding of registry keys --Write sample code using Python's built-in module winreg to deepen your understanding --Read code and deepen your understanding of how pipenv \ vendor \ pythonfinder works

Full error message

Microsoft Windows [Version 10.0.18363.1198]
(c) 2019 Microsoft Corporation. All rights reserved.

C:\Users\<username>>pipenv --python 3.7
Traceback (most recent call last):
  File "c:\users\<username>\appdata\local\programs\python\python37\lib\site-packages\pipenv\vendor\pythonfinder\models\python.py", line 618, in parse_executable
    result_version = get_python_version(path)
  File "c:\users\<username>\appdata\local\programs\python\python37\lib\site-packages\pipenv\vendor\pythonfinder\utils.py", line 105, in get_python_version
    c = subprocess.Popen(version_cmd, **subprocess_kwargs)
  File "c:\users\<username>\appdata\local\programs\python\python37\lib\subprocess.py", line 800, in __init__
    restore_signals, start_new_session)
  File "c:\users\<username>\appdata\local\programs\python\python37\lib\subprocess.py", line 1207, in _execute_child
    startupinfo)
FileNotFoundError: [WinError 2]The specified file could not be found.

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "c:\users\<username>\appdata\local\programs\python\python37\lib\runpy.py", line 193, in _run_module_as_main
    "__main__", mod_spec)
  File "c:\users\<username>\appdata\local\programs\python\python37\lib\runpy.py", line 85, in _run_code
    exec(code, run_globals)
  File "C:\Users\<username>\AppData\Local\Programs\Python\Python37\Scripts\pipenv.exe\__main__.py", line 7, in <module>
  File "c:\users\<username>\appdata\local\programs\python\python37\lib\site-packages\pipenv\vendor\click\core.py", line 829, in __call__
    return self.main(*args, **kwargs)
  File "c:\users\<username>\appdata\local\programs\python\python37\lib\site-packages\pipenv\vendor\click\core.py", line 782, in main
    rv = self.invoke(ctx)
  File "c:\users\<username>\appdata\local\programs\python\python37\lib\site-packages\pipenv\vendor\click\core.py", line 1236, in invoke
    return Command.invoke(self, ctx)
  File "c:\users\<username>\appdata\local\programs\python\python37\lib\site-packages\pipenv\vendor\click\core.py", line 1066, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "c:\users\<username>\appdata\local\programs\python\python37\lib\site-packages\pipenv\vendor\click\core.py", line 610, in invoke
    return callback(*args, **kwargs)
  File "c:\users\<username>\appdata\local\programs\python\python37\lib\site-packages\pipenv\vendor\click\decorators.py", line 73, in new_func
    return ctx.invoke(f, obj, *args, **kwargs)
  File "c:\users\<username>\appdata\local\programs\python\python37\lib\site-packages\pipenv\vendor\click\core.py", line 610, in invoke
    return callback(*args, **kwargs)
  File "c:\users\<username>\appdata\local\programs\python\python37\lib\site-packages\pipenv\vendor\click\decorators.py", line 21, in new_func
    return f(get_current_context(), *args, **kwargs)
  File "c:\users\<username>\appdata\local\programs\python\python37\lib\site-packages\pipenv\cli\command.py", line 205, in cli
    clear=state.clear,
  File "c:\users\<username>\appdata\local\programs\python\python37\lib\site-packages\pipenv\core.py", line 580, in ensure_project
    pypi_mirror=pypi_mirror,
  File "c:\users\<username>\appdata\local\programs\python\python37\lib\site-packages\pipenv\core.py", line 498, in ensure_virtualenv
    python = ensure_python(three=three, python=python)
  File "c:\users\<username>\appdata\local\programs\python\python37\lib\site-packages\pipenv\core.py", line 388, in ensure_python
    path_to_python = find_a_system_python(python)
  File "c:\users\<username>\appdata\local\programs\python\python37\lib\site-packages\pipenv\core.py", line 354, in find_a_system_python
    python_entry = find_python(finder, line)
  File "c:\users\<username>\appdata\local\programs\python\python37\lib\site-packages\pipenv\utils.py", line 2213, in find_python
    result = finder.find_python_version(line)
  File "c:\users\<username>\appdata\local\programs\python\python37\lib\site-packages\pipenv\vendor\pythonfinder\pythonfinder.py", line 276, in find_python_version
    if os.name == "nt" and self.windows_finder is not None:
  File "c:\users\<username>\appdata\local\programs\python\python37\lib\site-packages\pipenv\vendor\pythonfinder\pythonfinder.py", line 129, in windows_finder
    self._windows_finder = WindowsFinder()
  File "<attrs generated init pipenv.vendor.pythonfinder.models.windows.WindowsFinder>", line 13, in __init__
  File "c:\users\<username>\appdata\local\programs\python\python37\lib\site-packages\pipenv\vendor\pythonfinder\models\windows.py", line 113, in get_versions
    versions[py_version.version_tuple[:5]] = base_dir
  File "c:\users\<username>\appdata\local\programs\python\python37\lib\site-packages\pipenv\vendor\pythonfinder\models\python.py", line 365, in __getattribute__
    result = super(PythonVersion, self).__getattribute__(key)
  File "c:\users\<username>\appdata\local\programs\python\python37\lib\site-packages\pipenv\vendor\pythonfinder\models\python.py", line 430, in version_tuple
    self.patch,
  File "c:\users\<username>\appdata\local\programs\python\python37\lib\site-packages\pipenv\vendor\pythonfinder\models\python.py", line 375, in __getattribute__
    instance_dict = self.parse_executable(executable)
  File "c:\users\<username>\appdata\local\programs\python\python37\lib\site-packages\pipenv\vendor\pythonfinder\models\python.py", line 620, in parse_executable
    raise ValueError("Not a valid python path: %r" % path)
ValueError: Not a valid python path: 'C:/Users/<username>/Anaconda3/python.exe'