GNU Radio Python 3 import problem

1 ro1@watch:~/playground$ python3 -v -c "from gnuradio import gr"
import _frozen_importlib # frozen
import _imp # builtin
import sys # builtin
import '_warnings' # <class '_frozen_importlib.BuiltinImporter'>
import '_thread' # <class '_frozen_importlib.BuiltinImporter'>
import '_weakref' # <class '_frozen_importlib.BuiltinImporter'>
import '_frozen_importlib_external' # <class '_frozen_importlib.FrozenImporter'>
import '_io' # <class '_frozen_importlib.BuiltinImporter'>
import 'marshal' # <class '_frozen_importlib.BuiltinImporter'>
import 'posix' # <class '_frozen_importlib.BuiltinImporter'>
import _thread # previously loaded ('_thread')
import '_thread' # <class '_frozen_importlib.BuiltinImporter'>
import _weakref # previously loaded ('_weakref')
import '_weakref' # <class '_frozen_importlib.BuiltinImporter'>
# installing zipimport hook
import 'zipimport' # <class '_frozen_importlib.BuiltinImporter'>
# installed zipimport hook
# /usr/lib64/python3.6/encodings/__pycache__/__init__.cpython-36.pyc matches /usr/lib64/python3.6/encodings/__init__.py
# code object from '/usr/lib64/python3.6/encodings/__pycache__/__init__.cpython-36.pyc'
# /usr/lib64/python3.6/__pycache__/codecs.cpython-36.pyc matches /usr/lib64/python3.6/codecs.py
# code object from '/usr/lib64/python3.6/__pycache__/codecs.cpython-36.pyc'
import '_codecs' # <class '_frozen_importlib.BuiltinImporter'>
import 'codecs' # <_frozen_importlib_external.SourceFileLoader object at 0x7f1ebbbb70b8>
# /usr/lib64/python3.6/encodings/__pycache__/aliases.cpython-36.pyc matches /usr/lib64/python3.6/encodings/aliases.py
# code object from '/usr/lib64/python3.6/encodings/__pycache__/aliases.cpython-36.pyc'
import 'encodings.aliases' # <_frozen_importlib_external.SourceFileLoader object at 0x7f1ebbbc6a58>
import 'encodings' # <_frozen_importlib_external.SourceFileLoader object at 0x7f1ebbc2fc18>
# /usr/lib64/python3.6/encodings/__pycache__/utf_8.cpython-36.pyc matches /usr/lib64/python3.6/encodings/utf_8.py
# code object from '/usr/lib64/python3.6/encodings/__pycache__/utf_8.cpython-36.pyc'
import 'encodings.utf_8' # <_frozen_importlib_external.SourceFileLoader object at 0x7f1ebbbd4860>
import '_signal' # <class '_frozen_importlib.BuiltinImporter'>
# /usr/lib64/python3.6/encodings/__pycache__/latin_1.cpython-36.pyc matches /usr/lib64/python3.6/encodings/latin_1.py
# code object from '/usr/lib64/python3.6/encodings/__pycache__/latin_1.cpython-36.pyc'
import 'encodings.latin_1' # <_frozen_importlib_external.SourceFileLoader object at 0x7f1ebbbdb390>
# /usr/lib64/python3.6/__pycache__/io.cpython-36.pyc matches /usr/lib64/python3.6/io.py
# code object from '/usr/lib64/python3.6/__pycache__/io.cpython-36.pyc'
# /usr/lib64/python3.6/__pycache__/abc.cpython-36.pyc matches /usr/lib64/python3.6/abc.py
# code object from '/usr/lib64/python3.6/__pycache__/abc.cpython-36.pyc'
# /usr/lib64/python3.6/__pycache__/_weakrefset.cpython-36.pyc matches /usr/lib64/python3.6/_weakrefset.py
# code object from '/usr/lib64/python3.6/__pycache__/_weakrefset.cpython-36.pyc'
import '_weakrefset' # <_frozen_importlib_external.SourceFileLoader object at 0x7f1ebbbe1320>
import 'abc' # <_frozen_importlib_external.SourceFileLoader object at 0x7f1ebbbdb978>
import 'io' # <_frozen_importlib_external.SourceFileLoader object at 0x7f1ebbbdb5c0>
# /usr/lib64/python3.6/__pycache__/site.cpython-36.pyc matches /usr/lib64/python3.6/site.py
# code object from '/usr/lib64/python3.6/__pycache__/site.cpython-36.pyc'
# /usr/lib64/python3.6/__pycache__/os.cpython-36.pyc matches /usr/lib64/python3.6/os.py
# code object from '/usr/lib64/python3.6/__pycache__/os.cpython-36.pyc'
import 'errno' # <class '_frozen_importlib.BuiltinImporter'>
# /usr/lib64/python3.6/__pycache__/stat.cpython-36.pyc matches /usr/lib64/python3.6/stat.py
# code object from '/usr/lib64/python3.6/__pycache__/stat.cpython-36.pyc'
import '_stat' # <class '_frozen_importlib.BuiltinImporter'>
import 'stat' # <_frozen_importlib_external.SourceFileLoader object at 0x7f1ebbb836a0>
# /usr/lib64/python3.6/__pycache__/posixpath.cpython-36.pyc matches /usr/lib64/python3.6/posixpath.py
# code object from '/usr/lib64/python3.6/__pycache__/posixpath.cpython-36.pyc'
# /usr/lib64/python3.6/__pycache__/genericpath.cpython-36.pyc matches /usr/lib64/python3.6/genericpath.py
# code object from '/usr/lib64/python3.6/__pycache__/genericpath.cpython-36.pyc'
import 'genericpath' # <_frozen_importlib_external.SourceFileLoader object at 0x7f1ebbb8d0b8>
import 'posixpath' # <_frozen_importlib_external.SourceFileLoader object at 0x7f1ebbb83d68>
# /usr/lib64/python3.6/__pycache__/_collections_abc.cpython-36.pyc matches /usr/lib64/python3.6/_collections_abc.py
# code object from '/usr/lib64/python3.6/__pycache__/_collections_abc.cpython-36.pyc'
import '_collections_abc' # <_frozen_importlib_external.SourceFileLoader object at 0x7f1ebbb8d710>
import 'os' # <_frozen_importlib_external.SourceFileLoader object at 0x7f1ebbb73f98>
# /usr/lib64/python3.6/__pycache__/_sitebuiltins.cpython-36.pyc matches /usr/lib64/python3.6/_sitebuiltins.py
# code object from '/usr/lib64/python3.6/__pycache__/_sitebuiltins.cpython-36.pyc'
import '_sitebuiltins' # <_frozen_importlib_external.SourceFileLoader object at 0x7f1ebbb773c8>
# /usr/lib64/python3.6/__pycache__/sysconfig.cpython-36.pyc matches /usr/lib64/python3.6/sysconfig.py
# code object from '/usr/lib64/python3.6/__pycache__/sysconfig.cpython-36.pyc'
import 'sysconfig' # <_frozen_importlib_external.SourceFileLoader object at 0x7f1ebbb1eb70>
# /usr/lib64/python3.6/__pycache__/_sysconfigdata_m_linux_x86_64-linux-gnu.cpython-36.pyc matches /usr/lib64/python3.6/_sysconfigdata_m_linux_x86_64-linux-gnu.py
# code object from '/usr/lib64/python3.6/__pycache__/_sysconfigdata_m_linux_x86_64-linux-gnu.cpython-36.pyc'
import '_sysconfigdata_m_linux_x86_64-linux-gnu' # <_frozen_importlib_external.SourceFileLoader object at 0x7f1ebbb31470>
import 'site' # <_frozen_importlib_external.SourceFileLoader object at 0x7f1ebbbe6c50>
Python 3.6.8 (default, Aug  7 2019, 17:28:10)
[GCC 4.8.5 20150623 (Red Hat 4.8.5-39)] on linux
Type "help", "copyright", "credits" or "license" for more information.
# possible namespace for /usr/local/include/gnuradio
# possible namespace for /usr/local/etc/gnuradio
import 'gnuradio' # None
Traceback (most recent call last):
  File "<string>", line 1, in <module>
ImportError: cannot import name 'gr'
# clear builtins._
# clear sys.path
# clear sys.argv
# clear sys.ps1
# clear sys.ps2
# clear sys.last_type
# clear sys.last_value
# clear sys.last_traceback
# clear sys.path_hooks
# clear sys.path_importer_cache
# clear sys.meta_path
# clear sys.__interactivehook__
# clear sys.flags
# clear sys.float_info
# restore sys.stdin
# restore sys.stdout
# restore sys.stderr
# cleanup[2] removing builtins
# cleanup[2] removing sys
# cleanup[2] removing _frozen_importlib
# cleanup[2] removing _imp
# cleanup[2] removing _warnings
# cleanup[2] removing _thread
# cleanup[2] removing _weakref
# cleanup[2] removing _frozen_importlib_external
# cleanup[2] removing _io
# cleanup[2] removing marshal
# cleanup[2] removing posix
# cleanup[2] removing zipimport
# cleanup[2] removing encodings
# destroy encodings
# cleanup[2] removing codecs
# cleanup[2] removing _codecs
# cleanup[2] removing encodings.aliases
# cleanup[2] removing encodings.utf_8
# cleanup[2] removing _signal
# cleanup[2] removing __main__
# destroy __main__
# cleanup[2] removing encodings.latin_1
# cleanup[2] removing io
# destroy io
# cleanup[2] removing abc
# cleanup[2] removing _weakrefset
# destroy _weakrefset
# cleanup[2] removing site
# destroy site
# cleanup[2] removing os
# cleanup[2] removing errno
# cleanup[2] removing stat
# cleanup[2] removing _stat
# cleanup[2] removing posixpath
# cleanup[2] removing genericpath
# cleanup[2] removing os.path
# cleanup[2] removing _collections_abc
# destroy _collections_abc
# cleanup[2] removing _sitebuiltins
# cleanup[2] removing sysconfig
# destroy sysconfig
# cleanup[2] removing _sysconfigdata_m_linux_x86_64-linux-gnu
# destroy _sysconfigdata_m_linux_x86_64-linux-gnu
# cleanup[2] removing gnuradio
# destroy gnuradio
# destroy zipimport
# destroy _signal
# destroy _sitebuiltins
# destroy abc
# destroy errno
# destroy posixpath
# destroy _stat
# destroy genericpath
# destroy stat
# destroy os
# cleanup[3] wiping _frozen_importlib
# destroy _frozen_importlib_external
# cleanup[3] wiping _imp
# cleanup[3] wiping _warnings
# cleanup[3] wiping _thread
# cleanup[3] wiping _weakref
# cleanup[3] wiping _io
# cleanup[3] wiping marshal
# cleanup[3] wiping posix
# cleanup[3] wiping codecs
# cleanup[3] wiping _codecs
# cleanup[3] wiping encodings.aliases
# cleanup[3] wiping encodings.utf_8
# cleanup[3] wiping encodings.latin_1
# cleanup[3] wiping sys
# cleanup[3] wiping builtins