'NoneType' is not iterable in introspection/fallback_plugin.py

[Nodd]

Description

• What steps will reproduce the problem?
  1.
  2.
  3.
• What is the expected output? What do you see instead?

Traceback (most recent call last):
  File "/usr/local/anaconda/lib/python2.7/site-packages/spyderlib/utils/introspection/plugin_manager.py", line 342, in _introspection_complete
Traceback (most recent call last):
threads  File "/usr/local/anaconda/lib/python2.7/site-packages/spyderlib/utils/introspection/plugin_manager.py", line 342, in _introspection_complete
    result = self.plugins['fallback'].get_definition(info)
  File "/usr/local/anaconda/lib/python2.7/site-packages/spyderlib/utils/introspection/fallback_plugin.py", line 72, in get_definition
    if '.' in token:
TypeError: argument of type 'NoneType' is not iterable
    result = self.plugins['fallback'].get_definition(info)
  File "/usr/local/anaconda/lib/python2.7/site-packages/spyderlib/utils/introspection/fallback_plugin.py", line 72, in get_definition
    if '.' in token:
TypeError: argument of type 'NoneType' is not iterable

• Please provide any additional information below
  I was casually editing a python script, the error happened right after a copy-paste.
  I just noticed that spyder is not up to date, maybe it has already been corrected.

Version and main components

• Spyder Version: 2.3.3
• Python Version: 2.7.9
• Qt Version : 4.8.5, PyQt4 (API v2) 4.10.4 on Linux

Optional dependencies

pyflakes >=0.5.0: 0.8.1 (OK)
pep8 >=0.6 : 1.5.7 (OK)
IPython >=1.0 : 3.0.0 (OK)
zmq >=2.1.11 : 14.5.0 (OK)
pygments >=1.6 : 2.0.2 (OK)
pandas >=0.13.1 : 0.14.1 (OK)
sphinx >=0.6.6 : 1.2.3 (OK)
psutil >=0.3 : 2.1.1 (OK)
jedi >=0.8.1 : 0.8.1-final0 (OK)
rope >=0.9.2 : 0.9.4 (OK)
matplotlib >=1.0: 1.4.3 (OK)
sympy >=0.7.0 : 0.7.5 (OK)
pylint >=0.25 : 1.2.1 (OK)

[goanpeca]

Also having this issue... completion in Master seems to be kinda of broken... it takes too long (when it works) @blink1073

[blink1073]

Yikes! I'm on it.