pytest fails after installing pydsa on Ubuntu 14.04 64-bit

[goelakash]

Python version: 2.7.6, (using virtualenv) 2.7.9

Steps to reproduce:

1. cd into the repo folder.
2. sudo python setup.py install
3. py.test

The same doesn't happen without installing pydsa.

Test log:

============================= test session starts ==============================
platform linux2 -- Python 2.7.6, pytest-2.9.1, py-1.4.31, pluggy-0.3.1
rootdir: /home/goelakash/dev/pydsa, inifile: pytest.ini
collected 11 items / 40 errors 

build/lib.linux-x86_64-2.7/pydsa/binary_search.py .
build/lib.linux-x86_64-2.7/pydsa/bubble_sort.py .
build/lib.linux-x86_64-2.7/pydsa/counting_sort.py .
build/lib.linux-x86_64-2.7/pydsa/insertion_sort.py .
build/lib.linux-x86_64-2.7/pydsa/linear_search.py .
build/lib.linux-x86_64-2.7/pydsa/merge_sort.py .
build/lib.linux-x86_64-2.7/pydsa/queue.py .
build/lib.linux-x86_64-2.7/pydsa/quick_sort.py .
build/lib.linux-x86_64-2.7/pydsa/selection_sort.py .
build/lib.linux-x86_64-2.7/pydsa/sleep_sort.py .
build/lib.linux-x86_64-2.7/pydsa/stack.py .

==================================== ERRORS ====================================
________________________ ERROR collecting pydsa/bfs.py _________________________
/usr/local/lib/python2.7/dist-packages/py/_path/local.py:668: in pyimport
    raise self.ImportMismatchError(modname, modfile, self)
E   ImportMismatchError: ('pydsa.bfs', '/home/goelakash/dev/pydsa/build/lib.linux-x86_64-2.7/pydsa/bfs.py', local('/home/goelakash/dev/pydsa/pydsa/bfs.py'))
___________________ ERROR collecting pydsa/binary_search.py ____________________
/usr/local/lib/python2.7/dist-packages/py/_path/local.py:668: in pyimport
    raise self.ImportMismatchError(modname, modfile, self)
E   ImportMismatchError: ('pydsa.binary_search', '/home/goelakash/dev/pydsa/build/lib.linux-x86_64-2.7/pydsa/binary_search.py', local('/home/goelakash/dev/pydsa/pydsa/binary_search.py'))
________________________ ERROR collecting pydsa/bst.py _________________________
/usr/local/lib/python2.7/dist-packages/py/_path/local.py:668: in pyimport
    raise self.ImportMismatchError(modname, modfile, self)
E   ImportMismatchError: ('pydsa.bst', '/home/goelakash/dev/pydsa/build/lib.linux-x86_64-2.7/pydsa/bst.py', local('/home/goelakash/dev/pydsa/pydsa/bst.py'))
____________________ ERROR collecting pydsa/bubble_sort.py _____________________
/usr/local/lib/python2.7/dist-packages/py/_path/local.py:668: in pyimport
    raise self.ImportMismatchError(modname, modfile, self)
E   ImportMismatchError: ('pydsa.bubble_sort', '/home/goelakash/dev/pydsa/build/lib.linux-x86_64-2.7/pydsa/bubble_sort.py', local('/home/goelakash/dev/pydsa/pydsa/bubble_sort.py'))
___________________ ERROR collecting pydsa/counting_sort.py ____________________
/usr/local/lib/python2.7/dist-packages/py/_path/local.py:668: in pyimport
    raise self.ImportMismatchError(modname, modfile, self)
E   ImportMismatchError: ('pydsa.counting_sort', '/home/goelakash/dev/pydsa/build/lib.linux-x86_64-2.7/pydsa/counting_sort.py', local('/home/goelakash/dev/pydsa/pydsa/counting_sort.py'))
___________________ ERROR collecting pydsa/insertion_sort.py ___________________
/usr/local/lib/python2.7/dist-packages/py/_path/local.py:668: in pyimport
    raise self.ImportMismatchError(modname, modfile, self)
E   ImportMismatchError: ('pydsa.insertion_sort', '/home/goelakash/dev/pydsa/build/lib.linux-x86_64-2.7/pydsa/insertion_sort.py', local('/home/goelakash/dev/pydsa/pydsa/insertion_sort.py'))
___________________ ERROR collecting pydsa/linear_search.py ____________________
/usr/local/lib/python2.7/dist-packages/py/_path/local.py:668: in pyimport
    raise self.ImportMismatchError(modname, modfile, self)
E   ImportMismatchError: ('pydsa.linear_search', '/home/goelakash/dev/pydsa/build/lib.linux-x86_64-2.7/pydsa/linear_search.py', local('/home/goelakash/dev/pydsa/pydsa/linear_search.py'))
_____________________ ERROR collecting pydsa/merge_sort.py _____________________
/usr/local/lib/python2.7/dist-packages/py/_path/local.py:668: in pyimport
    raise self.ImportMismatchError(modname, modfile, self)
E   ImportMismatchError: ('pydsa.merge_sort', '/home/goelakash/dev/pydsa/build/lib.linux-x86_64-2.7/pydsa/merge_sort.py', local('/home/goelakash/dev/pydsa/pydsa/merge_sort.py'))
_______________________ ERROR collecting pydsa/queue.py ________________________
/usr/local/lib/python2.7/dist-packages/py/_path/local.py:668: in pyimport
    raise self.ImportMismatchError(modname, modfile, self)
E   ImportMismatchError: ('pydsa.queue', '/home/goelakash/dev/pydsa/build/lib.linux-x86_64-2.7/pydsa/queue.py', local('/home/goelakash/dev/pydsa/pydsa/queue.py'))
_____________________ ERROR collecting pydsa/quick_sort.py _____________________
/usr/local/lib/python2.7/dist-packages/py/_path/local.py:668: in pyimport
    raise self.ImportMismatchError(modname, modfile, self)
E   ImportMismatchError: ('pydsa.quick_sort', '/home/goelakash/dev/pydsa/build/lib.linux-x86_64-2.7/pydsa/quick_sort.py', local('/home/goelakash/dev/pydsa/pydsa/quick_sort.py'))
___________________ ERROR collecting pydsa/selection_sort.py ___________________
/usr/local/lib/python2.7/dist-packages/py/_path/local.py:668: in pyimport
    raise self.ImportMismatchError(modname, modfile, self)
E   ImportMismatchError: ('pydsa.selection_sort', '/home/goelakash/dev/pydsa/build/lib.linux-x86_64-2.7/pydsa/selection_sort.py', local('/home/goelakash/dev/pydsa/pydsa/selection_sort.py'))
_____________________ ERROR collecting pydsa/sleep_sort.py _____________________
/usr/local/lib/python2.7/dist-packages/py/_path/local.py:668: in pyimport
    raise self.ImportMismatchError(modname, modfile, self)
E   ImportMismatchError: ('pydsa.sleep_sort', '/home/goelakash/dev/pydsa/build/lib.linux-x86_64-2.7/pydsa/sleep_sort.py', local('/home/goelakash/dev/pydsa/pydsa/sleep_sort.py'))
_______________________ ERROR collecting pydsa/stack.py ________________________
/usr/local/lib/python2.7/dist-packages/py/_path/local.py:668: in pyimport
    raise self.ImportMismatchError(modname, modfile, self)
E   ImportMismatchError: ('pydsa.stack', '/home/goelakash/dev/pydsa/build/lib.linux-x86_64-2.7/pydsa/stack.py', local('/home/goelakash/dev/pydsa/pydsa/stack.py'))
___________________ ERROR collecting pydsa/tests/__init__.py ___________________
/usr/local/lib/python2.7/dist-packages/py/_path/local.py:650: in pyimport
    __import__(modname)
E   ImportError: No module named tests
___________________ ERROR collecting pydsa/tests/test_bfs.py ___________________
/usr/local/lib/python2.7/dist-packages/py/_path/local.py:650: in pyimport
    __import__(modname)
E   ImportError: No module named tests.test_bfs
___________________ ERROR collecting pydsa/tests/test_bfs.py ___________________
/usr/local/lib/python2.7/dist-packages/py/_path/local.py:650: in pyimport
    __import__(modname)
E   ImportError: No module named tests.test_bfs
______________ ERROR collecting pydsa/tests/test_binary_search.py ______________
/usr/local/lib/python2.7/dist-packages/py/_path/local.py:650: in pyimport
    __import__(modname)
E   ImportError: No module named tests.test_binary_search
______________ ERROR collecting pydsa/tests/test_binary_search.py ______________
/usr/local/lib/python2.7/dist-packages/py/_path/local.py:650: in pyimport
    __import__(modname)
E   ImportError: No module named tests.test_binary_search
___________________ ERROR collecting pydsa/tests/test_bst.py ___________________
/usr/local/lib/python2.7/dist-packages/py/_path/local.py:650: in pyimport
    __import__(modname)
E   ImportError: No module named tests.test_bst
___________________ ERROR collecting pydsa/tests/test_bst.py ___________________
/usr/local/lib/python2.7/dist-packages/py/_path/local.py:650: in pyimport
    __import__(modname)
E   ImportError: No module named tests.test_bst
_______________ ERROR collecting pydsa/tests/test_bubble_sort.py _______________
/usr/local/lib/python2.7/dist-packages/py/_path/local.py:650: in pyimport
    __import__(modname)
E   ImportError: No module named tests.test_bubble_sort
_______________ ERROR collecting pydsa/tests/test_bubble_sort.py _______________
/usr/local/lib/python2.7/dist-packages/py/_path/local.py:650: in pyimport
    __import__(modname)
E   ImportError: No module named tests.test_bubble_sort
______________ ERROR collecting pydsa/tests/test_counting_sort.py ______________
/usr/local/lib/python2.7/dist-packages/py/_path/local.py:650: in pyimport
    __import__(modname)
E   ImportError: No module named tests.test_counting_sort
______________ ERROR collecting pydsa/tests/test_counting_sort.py ______________
/usr/local/lib/python2.7/dist-packages/py/_path/local.py:650: in pyimport
    __import__(modname)
E   ImportError: No module named tests.test_counting_sort
_____________ ERROR collecting pydsa/tests/test_insertion_sort.py ______________
/usr/local/lib/python2.7/dist-packages/py/_path/local.py:650: in pyimport
    __import__(modname)
E   ImportError: No module named tests.test_insertion_sort
_____________ ERROR collecting pydsa/tests/test_insertion_sort.py ______________
/usr/local/lib/python2.7/dist-packages/py/_path/local.py:650: in pyimport
    __import__(modname)
E   ImportError: No module named tests.test_insertion_sort
______________ ERROR collecting pydsa/tests/test_linear_search.py ______________
/usr/local/lib/python2.7/dist-packages/py/_path/local.py:650: in pyimport
    __import__(modname)
E   ImportError: No module named tests.test_linear_search
______________ ERROR collecting pydsa/tests/test_linear_search.py ______________
/usr/local/lib/python2.7/dist-packages/py/_path/local.py:650: in pyimport
    __import__(modname)
E   ImportError: No module named tests.test_linear_search
_______________ ERROR collecting pydsa/tests/test_merge_sort .py _______________
/usr/local/lib/python2.7/dist-packages/py/_path/local.py:650: in pyimport
    __import__(modname)
E   ImportError: No module named tests.test_merge_sort
_______________ ERROR collecting pydsa/tests/test_merge_sort .py _______________
/usr/local/lib/python2.7/dist-packages/py/_path/local.py:650: in pyimport
    __import__(modname)
E   ImportError: No module named tests.test_merge_sort
__________________ ERROR collecting pydsa/tests/test_queue.py __________________
/usr/local/lib/python2.7/dist-packages/py/_path/local.py:650: in pyimport
    __import__(modname)
E   ImportError: No module named tests.test_queue
__________________ ERROR collecting pydsa/tests/test_queue.py __________________
/usr/local/lib/python2.7/dist-packages/py/_path/local.py:650: in pyimport
    __import__(modname)
E   ImportError: No module named tests.test_queue
_______________ ERROR collecting pydsa/tests/test_quick_sort.py ________________
/usr/local/lib/python2.7/dist-packages/py/_path/local.py:650: in pyimport
    __import__(modname)
E   ImportError: No module named tests.test_quick_sort
_______________ ERROR collecting pydsa/tests/test_quick_sort.py ________________
/usr/local/lib/python2.7/dist-packages/py/_path/local.py:650: in pyimport
    __import__(modname)
E   ImportError: No module named tests.test_quick_sort
_____________ ERROR collecting pydsa/tests/test_selection_sort.py ______________
/usr/local/lib/python2.7/dist-packages/py/_path/local.py:650: in pyimport
    __import__(modname)
E   ImportError: No module named tests.test_selection_sort
_____________ ERROR collecting pydsa/tests/test_selection_sort.py ______________
/usr/local/lib/python2.7/dist-packages/py/_path/local.py:650: in pyimport
    __import__(modname)
E   ImportError: No module named tests.test_selection_sort
_______________ ERROR collecting pydsa/tests/test_sleep_sort.py ________________
/usr/local/lib/python2.7/dist-packages/py/_path/local.py:650: in pyimport
    __import__(modname)
E   ImportError: No module named tests.test_sleep_sort
_______________ ERROR collecting pydsa/tests/test_sleep_sort.py ________________
/usr/local/lib/python2.7/dist-packages/py/_path/local.py:650: in pyimport
    __import__(modname)
E   ImportError: No module named tests.test_sleep_sort
__________________ ERROR collecting pydsa/tests/test_stack.py __________________
/usr/local/lib/python2.7/dist-packages/py/_path/local.py:650: in pyimport
    __import__(modname)
E   ImportError: No module named tests.test_stack
__________________ ERROR collecting pydsa/tests/test_stack.py __________________
/usr/local/lib/python2.7/dist-packages/py/_path/local.py:650: in pyimport
    __import__(modname)
E   ImportError: No module named tests.test_stack
===================== 11 passed, 40 error in 5.69 seconds ======================