Module import error

[rajeev1729]

It is working perfectly on window 7 and python 3.6.2.

def main():
    print("This is an illustration of a chaotic function")
    x = eval(input("enter a number between 0 and 1: "))
    print(type(x))
    for i in range(10):
        x = 3.9 * x * (1-x)
    print("The value of chaotic function is ",x)
main()