CalcAll3 | Python Fiddle

def calcSA(shape):
    if shape == "cube":
        x = input()
        SA = 6 * (x ** 2)
    elif shape == "cuboid":
        x = input()
        y = input()
        z = input()
        SA = 2*x*y + 2*x*z + 2*y*z
    elif shape == "cylinder":
        r = input()
        h = input()
        SA = 2*3.1415*r*h+2*3.1415*(r**2)
    else:
        print shape + " is not a valid option.  Valid options are cube, cuboid, or cylinder"
    return SA

def CalcVolume(shape):
    if shape == "cube":
        x = input()
        volume = x ** 3
    elif shape == "cuboid":
        x = input()
        y = input()
        z = input()
        volume = x*y*z
    elif shape == "cylinder":
        r = input()
        h = input()
        volume = 3.1415 * (r ** 2) * h
    else:
        print shape + " is not an option.  Please enter a different shape."
        
    return volume

def CalcArea(shape):
    if shape == "rectangle" or shape == "parallelogram":
        width = input("Please enter a width: ")
        height = input("Please enter a height: ")
        area = width * height
    elif shape == "triangle":
        base = input("Please enter a base: ")
        height = input("Please enter a height: ")
        area = 0.5 * base * height
    elif shape == "circle":
        radius = input("Please enter a radius: ")
        area = 3.1415 * (radius ** 2)
    elif shape == "square":
        length = input("Please enter a side length: ")
        area = length ** 2
    elif shape == "ellipse":
        a = input()
        b = input()
        area = 3.1415 * a * b
    elif shape == "trapezoid":
        a = input()
        b = input()
        h = input()
        area = 0.5*(a+b)*h
    else:
        print shape + " is not a valid option.  Please enter another shape."
    return area

option = input()
shape = input()

def CalcAnything(option, shape):
    if option == "Area":
        area = CalcArea(shape)
        return area
    elif option == "Surface Area":
        SA = calcSA(shape)
        return SA
    elif option == "Volume":
        Volume = CalcVolume(shape)
        return Volume
    else:
        print option + " is not valid for " + shape
        
print(CalcAnything(option, shape))

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