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You're right! We can not control everything and monitor everything!

The structure looks correct.

I have a similar problem. I'm really looking forward to the correct answer.

I studied Python on free Codacademy courses, it was my start. But it is betterto go to offline courses anyway, so that you can always try out important points from a teacher.
In general, it is better to learn all the functions, because different tasks will require different functions.