engine.create_schema() fails to create tables

[dmitryzv]

When there are more than 100 table in user's account and a table for a model already exists engine.create_schema() will fail with:
ResourceInUseException: Table already exists: table-name

This happens because in engine.py line 204 the call to:

        tablenames = set(self.dynamo.list_tables())

will return 100 first tables and in model_meta.py line 440:

        if tablename in tablenames:
            return None

will miss the fact that the table already exists.

Proposed solution:
For each table to create deliberately validate that it doesn't exist. Like (proto-code):

        for model in self._ddb_engine.models.itervalues():
            if not self._ddb_engine.dynamo.describe_table(model.meta_.ddb_tablename()):
                model.meta_.create_dynamo_schema(self._ddb_engine.dynamo, tablenames=[], wait=True)

[stevearc]

I think the solution might be easier than that. Old versions of dynamo3 had a default limit on list_tables of 100, but since 0.4.6 the default limit has been removed. Can you try pip install dynamo3>=0.4.6 and see if that fixes your problem?