About python MCQ

Question

What is the output of this code?
a=[1,2,3,4,5]
a[1,5] = [1]
Print(a)

But how the output is [1,1]?

Answer 1

Mustakim Rahman ,

this should be the correct code, may be a typo has happend to you:

...
a[1:5] = [1]
...

this is called a *slice assignment on the left hand side of an expression*. it means that in list *a* the indexes between *1* and *5* are replaced by the value of [1] (has to be an iterable).

so the result is: [1, 1]

Answer 2

Mustakim Rahman
a[1:5] means 2,3,4,5
index in python starts at 0. The values (2,3,4,5) gets replaced with 1 leaving [1,1] as answer

Answer 3

The output is runtime error.
In Python this is invalid.

a[1,5]

You cannot use a tuple as index.

Answer 4

But #Lother a[1:5] means a=1,2,3,4
Why just [1,1]?