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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def delete(self, *args):
 """Remove the currently selected item from my store"""

        key = self.name_wid.text or self.name_wid.hint_text
        if not hasattr(self.store, key):
            # TODO feedback about missing key
            return
        delattr(self.store, key)
        try:
            return min(kee for kee in dir(self.store) if kee > key)
        except ValueError:
            return '+'