code: def __init__(self, freq: Union[str, "Freq"]) -> None:
      if isinstance(freq, str):
          self.count, self.base = self.parse(freq)
      elif isinstance(freq, Freq):
          self.count, self.base = freq.count, freq.base
      else:
          raise NotImplementedError(
              f"This type of input is not supported"
          )
  
imports: import bisect
  from datetime import datetime, time, date, timedelta
  from typing import List, Optional, Tuple, Union
  import functools
  import re
  import pandas
  from qlib.config import C
  from qlib.constant import REG_CN, REG_TW, REG_US
label_desc: Use image node_id 1 to create a new Freq object  with example: obj = Freq(freq)