` Exception: Traceback (most recent call last): File “/Users/sampathkumarm/tensorflow/lib/python2.7/site-packages/pip/basecommand.py”, line 134, in main status = self.run(options, args) File “/Users/sampathkumarm/tensorflow/lib/python2.7/site-packages/pip/commands/list.py”, line 80, in run self.run_listing(options) File “/Users/sampathkumarm/tensorflow/lib/python2.7/site-packages/pip/commands/list.py”, line 127, in run_listing self.output_package_listing(installed_packages) File “/Users/sampathkumarm/tensorflow/lib/python2.7/site-packages/pip/commands/list.py”, line 136, in output_package_listing if dist_is_editable(dist): File “/Users/sampathkumarm/tensorflow/lib/python2.7/site-packages/pip/util.py”, line 347, in dist_is_editable req = FrozenRequirement.from_dist(dist, []) File “/Users/sampathkumarm/tensorflow/lib/python2.7/site-packages/pip/init.py”, line 195, in from_dist assert len(specs) == 1 and specs[0][0] == ‘==’ ** AssertionError**`

Storing complete log in /Users/sampathkumarm/.pip/pip.log

To Fix - edit the existing code as below. Existing code will try to check spec[0][0] is having value as ‘==’. But I found out that python-dateutils has ‘===’ in specs which is why my pip list is failing. So, to compensate that - little hack.

` (tensorflow)bash-3.2$ vi +194 /Users/sampathkumarm/tensorflow/lib/python2.7/site-packages/pip/init.py Edit line 194 as of pip/__init__.py show in your error code as below assert len(specs) == 1 and specs[0][0].startswith(‘==’) ```