Test time left: 10:51Problem SolvingWhat will be the output of the following program?def a(b): b = b + [5]c = [1, 2, 3, 4]a(c)print(len(c))Options4532
Question
Test time left: 10:51Problem SolvingWhat will be the output of the following program?def a(b): b = b + [5]c = [1, 2, 3, 4]a(c)print(len(c))Options4532
Solution
The output of the program will be 4.
Here's the step by step explanation:
- The function
a(b)is defined to take a listband append the number 5 to it. - The list
cis defined with four elements: 1, 2, 3, 4. - The function
a(c)is called withcas the argument. Inside the function, the number 5 is appended to the listb, which is a local copy ofc. However, this does not affect the original listcbecause lists are passed by value, not by reference in Python. - The
len(c)function is called, which returns the number of elements in the original listc. Since the original listchas not been modified, it still contains four elements, so the output of the program is 4.
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