Unable to use pip to install packages

[MRAB]

On 2021-04-01 19:42, Md Sohail Ansari via Python-list wrote:
> Hi Team,
> Thanks for your support. I am having trouble installing any packages using pip in Python 3.x (earlier had Python 3.8.3, so changed to 3.8.8) in Windows 10.
> Please help me with below issues:
> -----------------------------------------------C:\Users\mohsohai>pip install pytestTraceback (most recent call last):  File "C:\Users\mohsohai\AppData\Local\Programs\Python\Python38\Scripts\pip-script.py", line 11, in <module>    load_entry_point('pip==21.0.1', 'console_scripts', 'pip')()  File "c:\users\mohsohai\appdata\local\programs\python\python38\lib\site-packages\pip\_internal\cli\main.py", line 71, in main    command = create_command(cmd_name, isolated=("--isolated" in cmd_args))  File "c:\users\mohsohai\appdata\local\programs\python\python38\lib\site-packages\pip\_internal\commands\__init__.py", line 96, in create_command    module = importlib.import_module(module_path)  File "c:\users\mohsohai\appdata\local\programs\python\python38\lib\importlib\__init__.py", line 127, in import_module    return _bootstrap._gcd_import(name[level:], package, level)  File "<frozen importlib._bootstrap>", line 1014, in _gcd_import  File "<frozen importlib._bootstrap>", line 991, in _find_and_load  File "<frozen importlib._bootstrap>", line 975, in _find_and_load_unlocked  File "<frozen importlib._bootstrap>", line 671, in _load_unlocked  File "<frozen importlib._bootstrap_external>", line 783, in exec_module  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed  File "c:\users\mohsohai\appdata\local\programs\python\python38\lib\site-packages\pip\_internal\commands\install.py", line 12, in <module>    from pip._internal.cache import WheelCacheModuleNotFoundError: No module named 'pip._internal.cache'-------------------------------------------------
> Note: Have included pip in Enviromnet Variables
> Thank you,Sohail.
> 
I recommend you use the pip module with Python launcher:

     py -m pip install pytest

It just makes life easier.