code: def parse_requirements(requirements_file):
      
  
      if os.path.exists(requirements_file):
          # return a list that contains each line of the requirements file
          return open(requirements_file, 'r').read().splitlines()
      else:
          print("ERROR: requirements file " + requirements_file + " not found.")
          sys.exit(1)
docs: Create a list for the 'install_requires' component of the setup function
        by parsing a requirements file