So simply stated end is what you want to be printed after the. Using the command /end in the last line prevents. The question you found is mainly discussing the difference between python2 and python3 since there is no argument end for print.
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End command is used when a programmer finish writing programming language. The default value of end is \n meaning that after the print statement it will print a new line. 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.
