'return'函数语法错误

我刚开始学习python(请不要评判我的代码(，我很困惑为什么我会收到一个标题为"的语法错误return'外部函数"有人能帮帮我吗？另外，如果还有其他bug，你能帮我把它们整理一下吗？非常感谢。

这是我的代码：

print("Hello! Welcome to Your Personal Geometric Calculator!")
choice = print("Would you Like to Calculate Area (A), Perimeter (P), or Volume (V)")
π = 3.14159
#Area
if choice == "A" or choice == "a":
shape = input("What Shape do you Want to Find the Area of?:")
if shape == "Circle" or shape == "circle":
rC = int(input("Enter the Radius of the Circle (Use Meters):"))

print("The Area of the Circle:", π * (rC * rC), "m^2")
elif shape == "Square" or shape == "square":

sL = int(input("Enter the Length of the Side of the Square (Use Meters):"))

print("Area of the Sqaure:", sL * sL, "m^2")     
elif shape == "Rectangle" or shape == "rectangle":
lR = int(input("Enter the Length of the Rectangle (Use Meters):"))

wR = int(input("Enter the Width of the Rectangle:"))

print("The Area of the Rectangle:", lR * wR, "m")
#Perimeter
elif choice == "P" or choice == "p":
shape2 = ("What Shape do you Want to Find the Perimeter of?:")
if shape2 == "Circle" or shape2 == "circle":
rC2 = int(input("Enter the Radius of the Circle (Use Meters):"))

print("The Perimeter of the Circle:", 2 * (π * rC2), "m^2")
elif shape2 == "Square" or shape2 == "square":

sL2 = int(input("Enter the Length of the Side of the Square (Use Meters):"))

print("Perimeter of the Sqaure:", 4 * sL2, "m^2")
elif shape2 == "Rectangle" or shape2 == "rectangle":
lR2 = int(input("Enter the Length of the Rectangle (Use Meters):"))

wR2 = int(input("Enter the Width of the Rectangle:"))

print("The Perimeter of the Rectangle:", 2 * (lR2 + wR2), "m")
#Volume
elif choice == "V" or choice == "v":
shape3 = input("What Shape do you Want to Find the Volume of?:")
if shape3 == "Sphere" or shape3 == "sphere":
rC3 = int(input("Enter the Radius of the Sphere (Use Meters):"))

print("The Volume of the Sphere:", (4 * π * rC3 ** 3) / 3, "m^2")
elif shape3 == "Cube" or shape3 == "cube":

sL3 = int(input("Enter one Side Length of the Cube (Use Meters):"))
print("The Volume of the Cube:", sL3 ** 3, "m^3")
elif shape3 == "Prism" or shape3 == "prism":
lP = int(input("Enter the Length of the Prism (Use Meters):"))

wP = int(input("Enter the Width of the Prism:"))
hP = int(input("Enter the Height of the Prism:"))

print("The Volume of the Prism:", lP * wR * hP, "m^3")
else:

print("I'm sorry. We do not Support That Shape. Press Enter to try Again.")

return choice