input: 
  def sql_to_dataframe(sql_query: str, connection) -> pd.DataFrame:
      """ Convert a given SQL statement into a Python Pandas DataFrame.
      >>> sql_to_dataframe("SELECT * FROM book;", conn)
           id  title  author
      0    1   Book1  Author1
      1    2   Book2  Author2
      """
  
output:     
      return pd.read_sql(sql_query, connection)
  