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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def wnfild(small, window):
 """ Fill small gaps between adjacent intervals of a double precision window. http://naif.jpl.nasa.gov/pub/naif/toolkit_docs/C/cspice/wnfild_c.html :param small: Limiting measure of small gaps. :type small: float :param window: Window to be filled :type window: spiceypy.utils.support_types.SpiceCell :return: Filled Window. :rtype: spiceypy.utils.support_types.SpiceCell """

    assert isinstance(window, stypes.SpiceCell)
    assert window.dtype == 1
    small = ctypes.c_double(small)
    libspice.wnfild_c(small, ctypes.byref(window))
    return window