Answers for "python what is environment"

python virtual environment

python3 -m venv env
python -m virtualenv env #py2

source env/bin/activate

#all this is on same directory

virtual environment python

py -m venv env ## For windows and Python 3
.\env\Scripts\activate
deactivate

what is python virtual environment

# At its core, the main purpose of Python virtual environments is to 
# create an isolated environment for Python projects. This means that 
# each project can have its own dependencies, regardless of what 
# dependencies every other project has.