Pip is installed, but it is not on your PATH - Python probably isn’t either. You need to ask the installer to put them on the PATH during installation if you want to be able to use the programs from the command line. It doesn’t do this automatically because:
-
There is a separate, better tool for managing the
python
command on Windows; -
The way that Windows organizes programs means that every Python version would need a separate PATH entry, and there are surprising limits on the total PATH length that can cause strange problems.
Try using py -m pip
- this tells that “better tool” to find Python for you, and use that Python to run Pip (Pip is implemented in Python).
Reference links: