Can't assign to operator

I’m working on some code to make the Fibonacci sequence and I’m getting the error “can’t assign to operator”, but I don’t know why. Please help. My code is:
import time
t_end = time.time()+.5
num1 = 1
num2 = 2
print (num1)
print (num1)
print (num2)
while time.time()<t_end:
num1 + num2 = num3
num3+ num2 = num1
num1 + num3 = num2
print(num3)
print(num1)
print(num2)

Also, if you can think of code that does the Fibonacci sequence, please don’t tell me.

Tried to figure out why it was saying that to no avail. So i can understand more of your code could you tell me the purpose of importing time?

num3+ num2 = num1
num1 + num3 = num2

You need to flip these so that you only have 1 variable on the left side of =

num1 = num2 + num3
num2 = num1 + num3

Also your while loop won’t work.
I also have no idea what your code is trying to do.