from?itertools?import?groupby def?long_repeat(line): ????return?max((sum(1?for?i?in?g)?for?k,?g?in?groupby(line)),?default=0) if?__name__?==?'__main__': ????#?These?"asserts"?using?only?for?self-checking?and?not?necessary?for?auto-testing ????assert?long_repeat('sdsffffse')?==?4,?"First" ????assert?long_repeat('ddvvrwwwrggg')?==?3,?"Second" ????assert?long_repeat('abababaab')?==?2,?"Third" ????assert?long_repeat('')?==?0,?"Empty" ????print('"Run"?is?good.?How?is?"Check"?')