pip module not found code example

Example 1: pip not found

python -m ensurepip

##possibly the best way to autmatically install pip, if it is not found

Example 2: command not found: pip

apt-get install python3-pip

Example 3: module installed but not found python

>/bin/env python -m pip install --upgrade mymodule
# or 
/bin/env python -m pip install --upgrade mymodule