Indeed it is. Guido himself maintained a project called Pyxl3 [1] for a while (forked from one at Dropbox during his tenure there) that abused this codec featur

Indeed it is. Guido himself maintained a project called Pyxl3 [1] for a while (forked from one at Dropbox during his tenure there) that abused this codec feature to implement something similar to JSX within Python source. [1] https://github.com/gvanrossum/pyxl3 https://github.com/gvanrossum/pyxl3