Cannot import nnabla

[bashhwu]

I have installed nnabla in pycharm. it shows error when imported.
import nnabla
Traceback (most recent call last):
File "/usr/local/lib/python3.5/dist-packages/IPython/core/interactiveshell.py", line 2910, in run_code
exec(code_obj, self.user_global_ns, self.user_ns)
File "", line 1, in
import nnabla
File "/home/bashar/pycharm/helpers/pydev/_pydev_bundle/pydev_import_hook.py", line 20, in do_import
module = self._system_import(name, *args, **kwargs)
File "/usr/local/lib/python3.5/dist-packages/nnabla/init.py", line 16, in
from .logger import logger
File "/home/bashar/pycharm/helpers/pydev/_pydev_bundle/pydev_import_hook.py", line 20, in do_import
module = self._system_import(name, *args, **kwargs)
File "/usr/local/lib/python3.5/dist-packages/nnabla/logger.py", line 98, in
filemode='w+')
File "/usr/lib/python3.5/logging/init.py", line 1744, in basicConfig
h = FileHandler(filename, mode)