• venv and pip are included with the default install on Windows. You can use them right out of the box. Using Powershell to create a virtual enviornment and the subsequent directories if needed would look like this (check here for your regular CMD.exe commands):
PS C:\> python.exe -m venv C:\Projects\temp
PS C:\> &.\Projects\temp\Scripts\Activate.ps1
(temp) PS C:\>deactivate
PS C:\> 

To upgrade pip:

PS C:\> python.exe -m pip install --upgrade pip
Collecting pip
  Downloading pip-20.2.3-py2.py3-none-any.whl (1.5 MB)
     |████████████████████████████████| 1.5 MB 1.6 MB/s
Installing collected packages: pip
  Attempting uninstall: pip
    Found existing installation: pip 20.2.1
    Uninstalling pip-20.2.1:
      Successfully uninstalled pip-20.2.1
Successfully installed pip-20.2.3
  • Leave the generic shebang, Windows doesn't care. Having #!/usr/bin/python, #!/bin/bin/env python or whatever works for you will just be ignored by windows, no point in removing it.