Python题解 | #求解立方根#

from math import fabs


def func(a):
    left = -20
    right = 20
    b = 0.0
    while fabs(right - left) > 0.01:
        b = (right + left) / 2
        if b * b * b > a:
            right = b
        else:
            left = b
    return b


while True:
    try:
        a = float(input())
        print("%.1f" % func(a))

    except:
        break