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First solution in Clear category for Binary Count by Insonis
def checkio(number):
bin=''
while number>=1:
bin+=str(number%2)
number//=2
return bin.count("1")
#These "asserts" using only for self-checking and not necessary for auto-testing
if __name__ == '__main__':
assert checkio(4) == 1
assert checkio(15) == 4
assert checkio(1) == 1
assert checkio(1022) == 9
Dec. 3, 2018