code: def load(filepath=None):
      
      if filepath and os.path.exists(filepath):
          pass
      else:
          if not os.path.exists('.env'):
              return False
          filepath = os.path.join('.env')
  
      for key, value in _get_line_(filepath):
          # set the key, value in the python environment vars dictionary
          # does not make modifications system wide.
          os.environ.setdefault(key, str(value))
      return True
docs: Reads a .env file into os.environ.
  
          For a set filepath, open the file and read contents into os.environ.
          If filepath is not set then look in current dir for a .env file.