python install requirements.txt in venv code example

Example 1: install requirements.txt

pip install -r requirements.txt

Example 2: 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 3: pip install requirements.txt

pip3 install -r requirements.txt

Example 4: how to use virtual environment python

python3 -m pip install --user virtualenv