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Select the correct answerWhat will be the output of the following Python code?def p(q):    q = q + [5] r = [1, 2, 3, 4]p(r)print(len(r))Options51An exception is thrown4

Question

Select the correct answerWhat will be the output of the following Python code?def p(q):    q = q + [5] r = [1, 2, 3, 4]p(r)print(len(r))Options51An exception is thrown4

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Solution

The correct answer is 4.

Here's the step by step explanation:

  1. The function p(q) is defined to take a list q and append the number 5 to it.
  2. A list r is defined with the elements 1, 2, 3, 4.
  3. The function p(r) is called, but it doesn't change the original list r because lists are passed by value, not by reference in Python. This means that a new copy of r is created within the function, and the original r remains unchanged.
  4. Therefore, when len(r) is printed, it returns the length of the original list r, which is 4.

This problem has been solved

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