The default value of end is \n meaning that after the print statement it will print a new line. So simply stated end is what you want to be printed after the print statement has been executed
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According to Jeff Miller's Earliest Known Uses of Some of the Words of Mathematics, the term kernel was first used in this meaning by Pontryagin (in translation by Lehmer) in the slightly broader context of group homomorphisms. It doesn't say why Pontryagin or Lehmer chose that particular word though.
matrices - Word origin / meaning of 'kernel' in linear algebra ...
78 A semicolon is used to separate variables from parameters. Quite often, the terms variables and parameters are used interchangeably, but with a semicolon the meaning is that we are defining a function of the parameters that returns a function of the variables.
By default there is a newline character appended to the item being printed (end='\n'), and end='' is used to make it printed on the same line. And print() prints an empty newline, which is necessary to keep on printing on the next line.
What does end=' ' in a print call exactly do? - Stack Overflow
Нигде не могу найти описание функций begin() и end(), для чего они нужны? Если можно напишите пример пожалуйста :)
c++ - Что делают функции begin () и end () - Stack Overflow на русском