how to install libraries in python to your virtual environment code example

Example 1: python virtual environment

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

source env/bin/activate

#all this is on same directory

Example 2: create virtual environment python

sudo pip3 install virtualenv 

virtualenv venv

Example 3: how to set up python virtual environment

# install the package virtualenv
pip install virtualenv

# setup envioronment for Data engineering pipeline
virtualenv dataengineer_pipeline

# if using python >= 3.3
python -m venv dataengineer_pipeline

# start the environment in linux using 
dataengineer_pipeline/bin/activate

# or in windows
dataengineer_pipeline\Scripts\activate.bat

# when you are done using the environment, type in the command below
deactivate

Example 4: python install library in virtualenv

# ------- How to use a virtual environment on MAC? -------- #
# Use the command line to:

 1º - Instal Python3 and pip3
  
  
 2º - Create a folder for your virtual environment:
 
  >> cd "path_to_the_place_you_want_to_locate_your_folder"
  
  >> python3 -m venv "name_of_env"
  
  
 3º - Activate this virtual environment:

  >> source "name_of_env"/bin/activate
  
  
 4º - Now you can install new things inside this environment:
  
  >> pip3 install django  # for example