Tkinter string callbacks
I need a way to callback functions via a string.
From the comments to your question I understand that you'd like to do something like:
# ...callback_str = getcallback_str() # e.g., 'self.logic.account_new'callback = eval_dottedname(self, callback_str)`In this case eval_dottedname() function could be implemented as:
def eval_dottedname(obj, dottedname): if dottedname.partition(".")[0] != 'self': # or some other criteria # to limit the context raise ValueError return reduce(getattr, dottedname.split('.')[1:], obj)A better approach would be to limit string callbacks to simple identifiers and use a dispatch table like stdlib's cmd module:
def dispatch(self, callback_str): return getattr(self, 'do_' + callback_str, self.default)() def do_this(self): pass def do_that(self): pass