Result/Output Issue in Python Interpreter!!!

Aradhana Tripathi

Hello,

I am running below program in Python Interpreter, I am trying to know how the value of p[1] [0] is getting printed.

Per my understanding, value of p[1][0] should be 2, 3, 1 but giving output of 2.

Can someone investigate that and help me to know the answer.

Below is the code for your reference.

>>>q=[2,3]
>>>p=[1,q,4]
>>>len(p)     #print length of p
3             #output

>>>p[1]       #print p 
[2,3]         #output

>>>p[1] [0]   #print p
2             #output

2 Replies

Know the answer? Post it — somebody with the same question will find it here.

Sachin Singh2y ago
Accepted answer
In Python, when you access an element of a list using indexing, the value retrieved is the value at that particular index. In your case:

q = [2, 3] p = [1, q, 4]

When you do p[1], it returns the element at index 1 in the list p, which is the list [2, 3]. So, p[1] is [2, 3].

Now, when you do p[1][0], you are accessing the element at index 0 within the list p[1]. Since p[1] is [2, 3], p[1][0] refers to the element at index 0 within [2, 3], which is 2.

Therefore, the output of p[1][0] is indeed 2.
+1
Aradhana Tripathi2y ago
Thanks Sachin Singh for quick response, it helped!
+2