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