Installing a package or library in Python using pip

Update your pip using the command

python3 -m pip install --upgrade pip

To install a package in python you can use

pip install NameofPackage
# To ensure that the package is installed correctly 
pip list installed | grep 'NameofPackage'
# Sometime the package even though it is installed. You need to upgrade the pip to see it.
pip install --upgrade pip
# or 
python -m pip install --upgrade pip

Export all packages installed at pip to a file

pip3 freeze > requirments.txt

List all the packages installed at pip

pip3 list installed