The output will be 4.

Here's the step by step explanation:

1. We have two lists, A = [1,2,3] and B = [4,5].
2. The append() function in Python adds its argument as a single element to the end of a list. The length of the list increases by one.
3. So, when we do A.append(B), it adds the list B as a single element at the end of list A. Now, A = [1,2,3,[4,5]].
4. When we print(len(A)), it returns the number of elements in the list A, which is 4 in this case.

Question

The output will be 4.

Here's the step by step explanation:

1. We have two lists, A = [1,2,3] and B = [4,5].
2. The append() function in Python adds its argument as a single element to the end of a list. The length of the list increases by one.
3. So, when we do A.append(B), it adds the list B as a single element at the end of list A. Now, A = [1,2,3,[4,5]].
4. When we print(len(A)), it returns the number of elements in the list A, which is 4 in this case.

Knowee AI · Accepted Answer

The output will be 4.

Here's the step by step explanation:

1. We have two lists, A = [1,2,3] and B = [4,5].
2. The append() function in Python adds its argument as a single element to the end of a list. The length of the list increases by one.
3. So, when we do A.append(B), it adds the list B as a single element at the end of list A. Now, A = [1,2,3,[4,5]].
4. When we print(len(A)), it returns the number of elements in the list A, which is 4 in this case.

Write the output? A = [1,2,3] B = [4,5] A.append(B) print(len(A))

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