1.raw_input2.data visualize

website: http://www.pythontutor.com/

3.cubic root

x = int(input('Enter an integer: '))
ans = 0
while ans**3 < x:
    ans = ans + 1

#这里输出的ans是经过判断之后，比如x=8,则ans=2.

if ans**3 != x:
    print(str(x) + ' is not a perfect cube')
else:
    print('Cube root of ' + str(x) + ' is ' + str(ans))
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