(Python Only) Using a Requirements File
For a Python project, you can specify a list of the packages you want in a
         requirements.txt file that lives in your project. The packages can be
      installed all at once using pip/pip3. 
For a Python project, you can specify a list of the packages you want in a
         requirements.txt file that lives in your project. The packages can be
      installed all at once using pip/pip3.