ofparse does not work in python3.6

[amorenoz]

(dbg) [amorenoz@supportshell 02988202]$ ofparse -i 0130-dump_flow_ovs-appctl.txt datapath pretty
/usr/lib64/python3.6/re.py:212: FutureWarning: split() requires a non-empty pattern match.
  return _compile(pattern, flags).split(string, maxsplit)
Traceback (most recent call last):
  File "/cases/02988202/dbg/bin/ofparse", line 6, in <module>
    main.main()
  File "/cases/02988202/dbg/lib64/python3.6/site-packages/ovs_dbg/ofparse/main.py", line 153, in main
    maincli()
  File "/cases/02988202/dbg/lib64/python3.6/site-packages/click/core.py", line 1128, in __call__
    return self.main(*args, **kwargs)
  File "/cases/02988202/dbg/lib64/python3.6/site-packages/click/core.py", line 1053, in main
    rv = self.invoke(ctx)
  File "/cases/02988202/dbg/lib64/python3.6/site-packages/click/core.py", line 1659, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "/cases/02988202/dbg/lib64/python3.6/site-packages/click/core.py", line 1659, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "/cases/02988202/dbg/lib64/python3.6/site-packages/click/core.py", line 1395, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "/cases/02988202/dbg/lib64/python3.6/site-packages/click/core.py", line 754, in invoke
    return __callback(*args, **kwargs)
  File "/cases/02988202/dbg/lib64/python3.6/site-packages/click/decorators.py", line 38, in new_func
    return f(get_current_context().obj, *args, **kwargs)
  File "/cases/02988202/dbg/lib64/python3.6/site-packages/ovs_dbg/ofparse/dp.py", line 81, in pretty
    with print_context(console.console, opts):
  File "/cases/02988202/dbg/lib64/python3.6/site-packages/ovs_dbg/ofparse/console.py", line 189, in print_context
    return contextlib.nullcontext()
AttributeError: module 'contextlib' has no attribute 'nullcontext'