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I have been writing:
#!/usr/bin/python3
# -*- coding: utf-8 -*-
But I believe Python3 uses Unicode by default.
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The definition of superfluous is something that is more than needed or unnecessary. An example of superfluous is a buying a stuffed animal for a child who already has too many stuffed animals. In excess of what is required or sufficient. With a full rain suit, carrying an umbrella may be superfluous.
superfluous • \soo-PER-floo-us\ • adjective. 1 : exceeding what is sufficient or necessary : extra 2 : not needed : unnecessary.
Superfluous statements means the statements which are not really required for the program. You can rectify these statements by transaction SLIN. go to SLIN, give your prog name and tick 'Superflous Statements'. and execute. It will list all such statements with corrective measuers.
The default encoding for python3 code is utf-8. See python's unicode support.
If you want to support python2.x in the same file or if you want to use a coding other than utf-8, you need that comment, otherwise you can leave it off without any repercussions.
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