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First solution in Creative category for Long Repeat by Vasily__Chibilyaev
from itertools import groupby
long_repeat=lambda line: line!='' and max([len(list(g)) for k, g in groupby(line)])
if __name__ == '__main__':
#These "asserts" using only for self-checking and not necessary for auto-testing
assert long_repeat('') == 0, "First"
assert long_repeat('ddvvrwwwrggg') == 3, "Second"
print('"Run" is good. How is "Check"?')
Aug. 18, 2017
