How to install pip3 python packages in Termux

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If you are installed python3 version ( > 3.4 ), then  you can use following way to install pip3 packages in TERMUX.

1. Know your Python version:
       # python -V
        # Python 3.6.9
2. Install pip3 packages via:
        #python3.6 -m pip install [Package_to_install]


Example
Install telethon using pip3 in Termux:
        #python3.6 -m pip install telethon