a error in evnet

When i install mhn,it occured a error.I can't figure out what happened.
So i come here to find help.

Errors:

• pip install -e git+https://github.com/rep/evnet.git#egg=evnet-dev
  Obtaining evnet from git+https://github.com/rep/evnet.git#egg=evnet-dev
  Cloning https://github.com/rep/evnet.git to ./env/src/evnet
  Collecting pyev>=0.5.3-3.8 (from evnet)
  Using cached pyev-0.9.0.tar.gz
  Complete output from command python setup.py egg_info:
  Traceback (most recent call last):
  File "", line 1, in
  File "/tmp/pip-build-z7NHFh/pyev/setup.py", line 56, in
  check_version(python_version, min_python_versions[major], "Python{0}".format(major))
  File "/tmp/pip-build-z7NHFh/pyev/setup.py", line 40, in check_version
  if StrictVersion(current_version) < StrictVersion(minimum_version):
  File "/usr/lib/python2.7/distutils/version.py", line 40, in init
  self.parse(vstring)
  File "/usr/lib/python2.7/distutils/version.py", line 107, in parse
  raise ValueError, "invalid version number '%s'" % vstring
  ValueError: invalid version number '2.7.11+'

  Command "python setup.py egg_info" failed with error code 1 in /tmp/pip-build-z7NHFh/pyev/

[zam89]

Guys, any update on this? I got same problem.

@zam89 NO!