code: def _maybe_localize_point(ts, is_none, is_not_none, freq, tz):
      
      # Make sure start and end are timezone localized if:
      # 1) freq = a Timedelta-like frequency (Tick)
      # 2) freq = None i.e. generating a linspaced range
      if isinstance(freq, Tick) or freq is None:
          localize_args = {'tz': tz, 'ambiguous': False}
      else:
          localize_args = {'tz': None}
      if is_none is None and is_not_none is not None:
          ts = ts.tz_localize(**localize_args)
      return ts
docs: Localize a start or end Timestamp to the timezone of the corresponding
      start or end Timestamp
  
      Parameters
      ----------
      ts : start or end Timestamp to potentially localize
      is_none : argument that should be None
      is_not_none : argument that should not be None
      freq : Tick, DateOffset, or None
      tz : str, timezone object or None
  
      Returns
      -------
      ts : Timestamp