Since you cited PEP-263, read carefully the regular expression it gives for what the coding line should match:
^[ \t\f]*#.*?coding[:=][ \t]*([-_.a-zA-Z0-9]+)
specifically, the string coding should be immediately followed by a : or =, no whitespace. The encoding name UTF-8 is fine since encoding names are not case-sensitive.
The most common way to write this is:
# -*- coding: utf-8 -*-
Note: Since this is just a standard Python feature it is not specific to Sage, so you could also likely find answers to your problem on StackOverflow or any other source for Python help.
In what way does it "not work" for you? I just tested in this on Sage 8.9 with Python 2.7 on Windows and it works as expected. On Python 3 it's not necessary because all files are treated as UTF-8 encoded by default unless specified otherwise.
See PEP263. Note that UTF-8 does not appear in the standard encodings list. So maybe try # -- coding = utf_8 -- (lowercase, underscore).
The imminent Python 3-based Sage 9 should solve the problem..
Asked: 2019-12-19 10:35:23 +0100
Seen: 348 times
Last updated: Dec 23 '19
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