Pytest Traceback

pritishc@pritishc-GA-78LMT-USB3:/media/Data/SunPy Repo/sunpy/sunpy$ py.test tests/reprtest.py
Traceback (most recent call last):
  File "/usr/bin/py.test", line 9, in <module>
    load_entry_point('py==1.3.4', 'console_scripts', 'py.test')()
  File "/usr/lib/pymodules/python2.7/py/_cmdline/pytest.py", line 5, in main
    raise SystemExit(py.test.cmdline.main(args))
  File "/usr/lib/pymodules/python2.7/py/_test/cmdline.py", line 13, in main
    config.parse(args)
  File "/usr/lib/pymodules/python2.7/py/_test/config.py", line 95, in parse
    self._preparse(args)
  File "/usr/lib/pymodules/python2.7/py/_test/config.py", line 86, in _preparse
    self._conftest.setinitial(args)
  File "/usr/lib/pymodules/python2.7/py/_test/conftesthandle.py", line 44, in setinitial
    self._path2confmods[None] = self.getconftestmodules(anchor)
  File "/usr/lib/pymodules/python2.7/py/_test/conftesthandle.py", line 77, in getconftestmodules
    clist[:0] = self.getconftestmodules(dp)
  File "/usr/lib/pymodules/python2.7/py/_test/conftesthandle.py", line 72, in getconftestmodules
    clist.append(self.importconftest(conftestpath))
  File "/usr/lib/pymodules/python2.7/py/_test/conftesthandle.py", line 108, in importconftest
    mod = conftestpath.pyimport()
  File "/usr/lib/pymodules/python2.7/py/_path/local.py", line 530, in pyimport
    mod = __import__(modname, None, None, ['__doc__'])
  File "/media/Data/SunPy Repo/sunpy/sunpy/tests/conftest.py", line 4, in <module>
    import pytest
ImportError: No module named pytest