text: Title: NATR in non TA-lib mode
  Body: ```python
  # Calculate Result
      if Imports["talib"] and mode_tal:
          from talib import NATR
          natr = NATR(high, low, close, length)
      else:
          natr = scalar / close
          natr *= atr(high=high, low=low, close=close, length=length, mamode=mamode, drift=drift, offset=offset, **kwargs)
  ```
  
  I guess when talib is false, even then atr is calculated in talib mode since talib is False is not passed in atr call.