Your bug report

#15975: 24.3.50; Arithmetic error upon calling `python-indent-line` in a buffer of a single non-empty line.

which was filed against the emacs package, has been closed.

The explanation is attached below, along with your original report.
If you require more details, please reply to 15975@debbugs.gnu.org.

-- 
15975: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=15975
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