Github user JoshRosen commented on a diff in the pull request: https://github.com/apache/spark/pull/14469#discussion_r73794005 --- Diff: python/pyspark/sql/session.py --- @@ -384,17 +384,15 @@ def _createFromLocal(self, data, schema): if schema is None or isinstance(schema, (list, tuple)): struct = self._inferSchemaFromList(data) + converter = _create_converter(struct) --- End diff -- This [`_create_converter` method](https://github.com/davies/spark/blob/c0ad8668ba22e51b07ba08b8e19c312783cd1b87/python/pyspark/sql/types.py#L1054) is confusingly-named: what it's actually doing here is converting `data` from a dict to a tuple in case the schema is a StructType and data is a Python dictionary.
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