input: 
  def sql_to_dataframe(sql_query: str, conn) -> pd.DataFrame:
      """ Convert a given SQL statement into a Python Pandas DataFrame.
      >>> sql_to_dataframe("SELECT * FROM book;", conn)
      Pandas DataFrame containing all columns and rows from the 'book' table.
      """
  
output:     
      return pd.read_sql(sql_query, conn)
  