SCons import failed. Unable to find engine files in:
  /usr/local/bin/../engine
  /usr/local/bin/scons-local-3.0.1
  /usr/local/bin/scons-local
  /usr/local/lib/scons-3.0.1
  /usr/lib/scons-3.0.1
  /usr/local/lib/scons-3.0.1
  /usr/local/lib/python3.5/site-packages/scons-3.0.1
  /usr/lib/python3.5/site-packages/scons-3.0.1
  /usr/local/lib/python3.5/site-packages/scons-3.0.1
  /usr/lib/scons-3.0.1
  /usr/local/lib/scons
  /usr/lib/scons
  /usr/local/lib/scons
  /usr/local/lib/python3.5/site-packages/scons
  /usr/lib/python3.5/site-packages/scons
  /usr/local/lib/python3.5/site-packages/scons
  /usr/lib/scons
Traceback (most recent call last):
  File "/usr/local/bin/scons", line 192, in <module>
    import SCons.Script
ImportError: No module named 'SCons'