This is just one of many possible solutions:
decimal_number = int(input('Please enter a decimal number: '))
bit_value = 1
while bit_value <= decimal_number:
bit_value = bit_value * 2
while bit_value > 1:
bit_value = bit_value / 2
if decimal_number >= bit_value:
print('high')
decimal_number = decimal_number - bit_value
else:
print('low')