Python Code doesn't work!

[the_entrepreneur]

I've started learning Python for a few days now. Basically, I do not understand a lot of terms these Python developers use and I dont really know how to fix my code.

I was learning Python from this: https://www.youtube.com/watch?v=rfscVS0vtbw&t=9301s

There was a part where we had to create a very simple calculator. In the video, the code seemed to work perfectly. But it didn't work as well for me. I use PyCharm, by the way. It doesn't show any errors, but the code doesn't serve its purpose

Here's the code for the simple calculator:

# Program make a simple calculator that can add, subtract, multiply and divide using functions

# This function adds two numbers
def add(num1, num2):
   return num1 + num2

# This function subtracts two numbers
def subtract(x, y):
   return x - y

# This function multiplies two numbers
def multiply(x, y):
   return x * y

# This function divides two numbers
def divide(x, y):
   return x / y



print("Select operation.")
print("1.Add")
print("2.Subtract")
print("3.Multiply")
print("4.Divide")

# Take input from the user
choice = input("Enter choice(1/2/3/4):")

num1 = float(input("Enter first number: "))
num2: float(input("Enter second number: "))

if choice == '1':
   print(add(num1,num2))

elif choice == '2':
   print(num1,"-",num2,"=", subtract(num1,num2))

elif choice == '3':
   print(num1,"*",num2,"=", multiply(num1,num2))

elif choice == '4':
   print(num1,"/",num2,"=", divide(num1,num2))
else:
   print("Invalid input")

Some functions seem to work at times, but most of the time it just doesn't work.

Here's another word guessing game I built which doesn't work either:

secret_word = "harry"
guess = ""
guess_count = 0
guess_limit = 3
out_of_guesses = False

while guess != secret_word and not(out_of_guesses):
    if guess_count < guess_limit:
        guess = input("Enter your guess: ")
        guess_count += 1
    else:
        out_of_guesses = True

if out_of_guesses:
    print("Out of guesses. Better luck next time!")
else:
    print("Congrats! You win!")

I use Python 3 & I feel this should work. Why doesn't it? I'd really appreciate it if you looked into this ASAP & gave me some feedback.