code: def read_csv_with_different_type(csv_name, column_types_dict, usecols=None):
      
      csv_path = os.path.join(DATA_FOLDER, csv_name)
      csv = pd.read_csv(
          csv_path,
          usecols=usecols,
          encoding="utf-8",
          dtype=column_types_dict,
          engine="python",
      )
  
      for key_column, val_type in column_types_dict.items():
          if val_type == str:
              csv[key_column] = csv[key_column].str.strip()
  
      return csv
docs: Returns a DataFrame from a .csv file stored in /data/raw/.
      Reads the CSV as string.