Question

What will be printed if the below code is run?

1. a = "123"
2. b = “456"
3. a = b + "123"
4. b = a
5. print (b + a)

Answer 1

When the provided Python code is executed, it performs a series of string assignments and concatenations, resulting in the final output of "456123456123".

Step-by-step explanation:

The code provided is a sequence of assignments and string concatenations in Python. Let's break it down line by line and see what each one does:

1. a = "123" initializes variable a with the string "123".
2. b = “456” initializes variable b with the string "456". Note that the quotes must be regular (either single or double quotes) for this code to work in Python.
3. a = b + "123" reassigns a to be the result of concatenating b with the string "123"; now a would be "456123".
4. b = a sets b to the current value of a, so b becomes "456123" too.
5. print (b + a) prints the result of concatenating b and a, which are both "456123" at this point, so it prints "456123456123".

So the final output when this code is run will be "456123456123".

Answer 2

What will be printed if the below code is run?

1. a = "123"

2. b = “456"

3. a = b + "123"

4. b = a

5. print (b + a)