input: 
  from typing import List, Tuple
  
  def select_approved_rows() -> List[Tuple]:
     """
     Select all rows from a table where the 'status' is 'approved'.
     >>> select_approved_rows()
     [('row1_data', 'approved'), ('row2_data', 'approved')]
     """
     sql = "SELECT * FROM table WHERE status = 'approved'"
     cur.execute(sql)
     return cur.fetchall()
  
output:     conn = sqlite3.connect('example.db')
      cur = conn.cursor()
      return select_approved_rows()