Update all .py source files by
$ pyupgrade --py3-only $(git ls-files | grep ".py$")
to modernize the code according to Python 3 syntaxes.
pep8 errors are fixed by
$ autopep8 --select=E127,E128,E501 --max-line-length 79 -r \
--in-place heat_dashboard
and a few manual adjustments.
Change-Id: Ib30712e1c77a203a0b14696373fe3b517652ef77
Signed-off-by: Takashi Kajinami <kajinamit@oss.nttdata.com>