pass argument to __enter__

Question

Just learning about with statements especially from this article

question is, can I pass an argument to __enter__?

I have code like this:

class clippy_runner:     def __enter__(self):         self.engine = ExcelConnection(filename = "clippytest\Test.xlsx")         self.db = SQLConnection(param_dict = DATASOURCES[STAGE_RELATIONAL])          self.engine.connect()         self.db.connect()          return self 

I'd like to pass filename and param_dict as parameters to __enter__. Is that possible?

Answer 1

No. You can't. You pass arguments to __init__().

class ClippyRunner:     def __init__(self, *args):        self._args = args      def __enter__(self):        # Do something with args        print(self._args)   with ClippyRunner(args) as something:     # work with "something"     pass