Can some one help me fix my code?

Question

This is a Geometric sequence t1 calculator
s1=float(input("The Geometric series's sum is:"))
r=float(input("The common ratio:"))
n=int(input("please enter the n:"))
final=print("The number is:",(1-r**n)/(1-r))
#s1/final=t1
print("The t1 is",(s1/final))
#print t1

Answer 1

Andy birder ,

final = print("The number is:", (1-r**n)/(1-r))

> this line above is assigning the *return value* of a print statement to the variable *final*, which is *None*. in the last line of the code a division is
done like: (s1/final)
the float input value in the variable *s1* is divided by *None* which creates a *TypeError*.

> we can use the *walrus operator* (assignment expression):
...
print("The number is:", res := (1-r**n)/(1-r))
print("The t1 is", (s1/res))

Answer 2

What if you separate into these two lines?
final = (1-r**n)/(1-r)
print("The number is:", final)

Answer 3

Thanks 👍👍👍👍❤️