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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 read_region_as_imagecoord(s, header):
 """Read region as image coordinates. Parameters s : str Region string header : `~astropy.io.fits.Header` FITS header Returns ------- shapes : `~pyregion.ShapeList` List of `~pyregion.Shape` """

    rp = RegionParser()
    ss = rp.parse(s)
    sss1 = rp.convert_attr(ss)
    sss2 = _check_wcs(sss1)
    sss3 = rp.sky_to_image(sss2, header)

    shape_list = rp.filter_shape(sss3)
    return ShapeList(shape_list)