from __future__ import absolute_import
from __future__ import division
from __future__ import print_function
from __future__ import unicode_literals
import contextlib
import sys


@contextlib.contextmanager
def DlopenGuard():
    # In python 2.7 required constants are not defined.
    # Thus they are listed explicitly
    flags = sys.getdlopenflags()
    sys.setdlopenflags(256 | 2)  # RTLD_GLOBAL | RTLD_NOW
    yield
    sys.setdlopenflags(flags)