docs: def dt_to_timestamp(dt):
      """Converts from a :class:`~datetime.datetime` object to an integer
      timestamp, suitable interoperation with :func:`time.time` and
      other `Epoch-based timestamps`.
  
      .. _Epoch-based timestamps: https://en.wikipedia.org/wiki/Unix_time
  
      >>> abs(round(time.time() - dt_to_timestamp(datetime.utcnow()), 2))
      0.0
  
      ``dt_to_timestamp`` supports both timezone-aware and naïve
      :class:`~datetime.datetime` objects. Note that it assumes naïve
      datetime objects are implied UTC, such as those generated with
      :meth:`datetime.datetime.utcnow`. If your datetime objects are
      local time, such as those generated with
      :meth:`datetime.datetime.now`, first convert it using the
      :meth:`datetime.datetime.replace` method with ``tzinfo=``
      :class:`LocalTZ` object in this module, then pass the result of
      that to ``dt_to_timestamp``.
      """
      if dt.tzinfo:
          td = dt - EPOCH_AWARE
      else:
          td = dt - EPOCH_NAIVE
      return total_seconds(td)