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
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
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
The end=' ' is just to say that you want a space after the end of the statement instead of a new line character. In Python 2.x you would have to do this by placing a comma at the end of the print statement.
One of the default parameter to the print function is end = '\n'. So what that means is by default python inserts a newline right after your print statement. Most of the time this is handy and reduces having to use the newline every time. But sometimes this is not the case and we don't want it to insert a newline character in the end. So to override this default parameter we give an end ...
END Command is used when a programmer finish writing programming language. Using the Command /END in the last line prevents the program from repeating the same previously written programming Commands for uncountable times which consequently will never end at all.