text: """Helper methods for locating file(s)"""
  import numpy as np
  import datetime as dt
  
  
  def bounds(times, length):
      dtype = "datetime64[s]"
      if isinstance(times, list):
          times = np.asarray(times, dtype=dtype)
      if isinstance(length, dt.timedelta):
          length = np.asarray(length, dtype="timedelta64[s]")
      return np.array([times, times + length], dtype=dtype).T
  
  
  def in_bounds(bounds, point):
      if isinstance(point, str):
          point = np.datetime64(point, "s")
      return (bounds[:, 0] <= point) & (point < bounds[:, 1])
  