Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_17356106_1 (season__number VARCHAR, directed_by VARCHAR)
### Question:
What was the number of seasons that was directed by Joanna Kerns?
### Answer:
SELECT COUNT(season__number) FROM table_17356106_1 WHERE directed_by = "Joanna Kerns"