Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_20704243_3 ( directed_by VARCHAR, season__number VARCHAR )

### Question ###
How many directors were in Season 2?

### Accurate SQL ###

SELECT COUNT(directed_by) FROM table_20704243_3 WHERE season__number = 2