def __getitem__()

in src/stepfunctions/inputs/placeholders.py [0:0]


    def __getitem__(self, name):
        """
            Subscript operator to build placeholder variables.
        """
        if not self._is_valid_name(name):
            raise ValueError('Key name can only be string or integer')
        if name in self.store:
            return self.store[name]
        else:
            self.store[name] = self._create_variable(name=name, parent=self)
            return self.store[name]