Python 3.6 and above has deprecated illegal string escape sequences. Escape sequences are preceded by a '\' and valid ones are "\n\t\r" etc. Illegal ones are not in the list https://docs.python.org/3/reference/lexical_analysis.html#string-and-bytes-literals.
Previous to Python 3.6 these illegal sequences were ignored and the '\' was left in place. Pylint has been noting these for a while now.
This PR corrects these sequences in Gramps. I used
find . -name "*.py" | xargs -t -n 1 python3 -Wd -m py_compile 2>&1 | grep Depre
to locate the failing strings.
This does patch updates Gramps to the 3.2 syntax, it does not yet mean Gramps works with python 3.2
Expect next day commits to fix further issues, but this is the main 2to3 tool created patch changed
where needed to have python 2.7 work.
Specific issues might be:
1. next has been changed, must be checked
2. new division as on the wiki page listed is to do
3. ...
svn: r20634
