input: 
  def sql_to_dataframe(sql_query: str, conn) -> pd.DataFrame:
      """ Converts a given SQL query to a Pandas DataFrame.
      >>> sql_to_dataframe("SELECT * FROM book;", conn)
      import pandas as pd
      df = pd.read_sql_query("SELECT * FROM book;", conn)
      """
      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)