`Traceback (most recent call last):`

`
 "<stdin>", line 1, in <module>`

`
 "/home/samir/Numba_venv/env/lib/python2.7/site-packages/numba/__init__.py", line 9, in <module>`

`from . import config, errors, runtests, types`
`ImportError: cannot import name config`

Traceback (most recent call last):

 "C:\Anaconda2\lib\site-packages\spyderlib\plugins\ipythonconsole.py", line 656, in toggle_view
self.create_new_client(give_focus=False)

 "C:\Anaconda2\lib\site-packages\spyderlib\plugins\ipythonconsole.py", line 832, in create_new_client
self.main.extconsole.start_ipykernel(client, give_focus=give_focus)

 "C:\Anaconda2\lib\site-packages\spyderlib\plugins\externalconsole.py", line 1273, in start_ipykernel
ipyclient=client, give_ipyclient_focus=give_focus)

 "C:\Anaconda2\lib\site-packages\spyderlib\plugins\externalconsole.py", line 832, in start
show_elapsed_time=show_elapsed_time)

 "C:\Anaconda2\lib\site-packages\spyderlib\widgets\externalshell\pythonshell.py", line 207, in __init__
show_elapsed_time=show_elapsed_time)

 "C:\Anaconda2\lib\site-packages\spyderlib\widgets\externalshell\baseshell.py", line 73, in __init__
self.shell = self.SHELL_CLASS(parent, get_conf_path(history_filename))

 "C:\Anaconda2\lib\site-packages\spyderlib\widgets\externalshell\pythonshell.py", line 39, in __init__
PythonShellWidget.__init__(self, parent, history_filename, profile)

 "C:\Anaconda2\lib\site-packages\spyderlib\widgets\shell.py", line 673, in __init__
ShellBaseWidget.__init__(self, parent, history_filename, profile)

 "C:\Anaconda2\lib\site-packages\spyderlib\widgets\shell.py", line 63, in __init__
self.history = self.load_history()

 "C:\Anaconda2\lib\site-packages\spyderlib\widgets\shell.py", line 508, in load_history
encoding.writelines(rawhistory, self.history_filename)

 "C:\Anaconda2\lib\site-packages\spyderlib\utils\encoding.py", line 206, in writelines
return write(os.linesep.join(lines), filename, encoding, mode)

 "C:\Anaconda2\lib\site-packages\spyderlib\utils\encoding.py", line 196, in write
text, encoding = encode(text, encoding)

 "C:\Anaconda2\lib\site-packages\spyderlib\utils\encoding.py", line 157, in encode
raise RuntimeError("Incorrect encoding (%s)" % coding)RuntimeError: Incorrect encoding (None)