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Применение функции def

Объясните применение def,я плохо понимаю что можно делать с этим,желательно разжевать ибо я уже более 5 дней пытаюсь понять

25th Jun 2021, 11:45 PM
Дима Мельник
Дима Мельник - avatar
1 ответ
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'def' is used to DEFine function... functions are used to avoiding code repetition: they could take arguments (or not) and could return value (or not)... if you have some logic that repeat more than twice in a code, then it would be advantageous to define a function to do that logic... suppose you have to compute many times the square of a value if value is less than zero, else compute the double of the value (simple example), you could do: def square_or_double(val): if val < 0: return val*val else: return 2*val then, you have only to call the function to get the result, avoiding repeating many times the four lines of the function body: v1 = square_or_double(-42) v2 = square_or_double(42)
25th Jun 2021, 11:54 PM
visph
visph - avatar