Difference between running a program in IDLE and terminal ?

Question

a=str(input("entrsmth:"))
b=int(input("entranmbr:"))
print(a*b)
I ran this in IDLE and it worked fine.
But,when I run this directly from Ubuntu terminal using python, it shows NameError: name '(my input for a)' is not defined. works fine when I input a number for a.
What's the difference when you run a program from IDLE and terminal?

Answer 1

The main difference is that instructions are executed immediately in terminal, while IDE executes the whole code at once.

However, when in terminal, each instruction is "remembered" and so a once declared variable is always ready to ve invoked. While in IDE you have to declare it at each runtime.