Resolve the following python3 portability issues:
1) Python 3 needs explicit relative import path.
2) Coredumps are binary data, not unicode strings. Use byte strings
(b"" instead of "") and open files in binary format.
3) Some functions (for example: filter) return a list in python 2,
but an iterator in python 3. Port code to a common subset of python 2
and python 3 using itertool.
4) Division operator / changed meaning in Python 3. Use explicit
integer division (//) where appropriate.
Signed-off-by: Andrey Vyazovtsev <viazovtsev.av@phystech.edu>
As discussed on the mailing list, current .py files formatting does not
conform to the world standard, so we should better reformat it. For this
the yapf tool is used. The command I used was
yapf -i $(find -name *.py)
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>
In Py2 `range` returns a list and `xrange` creates a sequence object
that evaluates lazily. In Py3 `range` is equivalent to `xrange` in Py2.
Signed-off-by: Radostin Stoyanov <rstoyanov1@gmail.com>
Signed-off-by: Andrei Vagin <avagin@gmail.com>
