code: def get_python_argv(self):
          
          if isinstance(self.python_path, list):
              return self.python_path
          return [self.python_path]
docs: Return the initial argument vector elements necessary to invoke Python,
          by returning a 1-element list containing :attr:`python_path` if it is a
          string, or simply returning it if it is already a list.
  
          This allows emulation of existing tools where the Python invocation may
          be set to e.g. `['/usr/bin/env', 'python']`.