code: def window_none(x):
      """
      No window function; simply return *x*.
  
      See Also
      --------
      window_hanning : Another window algorithm.
      """
      return x
  
imports: import functools
  from numbers import Number
  import numpy
  from matplotlib import _api, _docstring, cbook
label_desc: Use image node_id 2 for calling a global function with example usage: window_none(x) and returns: x