Open ex01.py and take a look at the code. What is the difference between the methods do_append() and do_allocate()?

Use vmstat to monitor the memory usage while performing the following experiments. In the main method, call:

• The do_append method on it's own (see Experiment 1).
• The do_allocate method on it's own (see Experiment 2).
• Both methods as shown in the Experiment 3 area in the code.
• Both methods as shown in the Experiment 4 area in the code.

Offer an interpretation for the obtained results and change the code in do_append() so that the memory usage will be the same when performing Experiment 3 or Experiment 4.

HINTS: Python GC; Reference cycle