input: from typing import List
  
  import pandas as pd
  
  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   SQL  Smith  ...
      1    2  Java  Brown  ...
      """
      df = pd.read_sql_query(sql_query, connection)
      return df
output:     df = pd.read_sql_query(sql_query, connection)
      return df