SyntaxError: Non-ASCII character

[ceremcem]

Following error is thrown because of © character used without the encoding declaration in here:

File ".../btrfs-snapshots-diff.py", line 37
SyntaxError: Non-ASCII character '\xc2' in file .../btrfs-snapshots-diff.py on line 38, but no encoding declared; see http://python.org/dev/peps/pep-0263/ for details