zaki@C800D:~/Downloads/gns3-server$ py.test -v
Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/_pytest/config.py", line 373, in _importconftest
    mod = conftestpath.pyimport()
  File "/usr/lib/python2.7/dist-packages/py/_path/local.py", line 662, in pyimport
    __import__(modname)
  File "/usr/lib/python2.7/dist-packages/_pytest/assertion/rewrite.py", line 211, in load_module
    py.builtin.exec_(co, mod.__dict__)
  File "/usr/lib/python2.7/dist-packages/py/_builtin.py", line 221, in exec_
    exec2(obj, globals, locals)
  File "<string>", line 7, in exec2
  File "/home/zaki/Downloads/gns3-server/tests/conftest.py", line 21, in <module>
    import asyncio
ImportError: No module named asyncio
ERROR: could not load /home/zaki/Downloads/gns3-server/tests/conftest.py

zaki@C800D:~/Downloads/gns3-server$