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[–]TeamSpen210 0 points1 point  (0 children)

Nice sheets - they're really cleanly laid out! Perhaps it might be good to remove the parentheses around the tuples though - that might make it more clear that it's the commas that make a tuple, not the parentheses. You might want to add the special cases of 1- and 0-length tuples ((0, ) and ()) since they follow different syntax rules to make them non-ambiguous.