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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 create_all_tables(self):
 """Create database tables for all known database data-models."""

        for klass in self.__get_classes():
            if not klass.exists():
                klass.create_table(read_capacity_units=1, write_capacity_units=1, wait=True)