how to import installed pip to venv code example

Example 1: virtual env create python

#------FOR LINUX/MAC---------#
#installing venv 
sudo apt-get install python3.6-venv
#creating virtual env
python3 -m venv env
#activating virtual env
source env/bin/activate


#-------FOR WINDOWS----------#
#installing venv
py -m pip install --user virtualenv
#creating virtual env
py -m venv env
#activating virtual env
.\env\Scripts\activate

Example 2: how to use virtual environment python

python3 -m pip install --user virtualenv

Example 3: pip prohibit install without venv

export PIP_REQUIRE_VIRTUALENV=true