SystemError: dynamic module not initialized properly
 ./CPUplot.py
Traceback (most recent call last):
  File "/nix/store/bcnlfw17fibplj1qcdq3a0vb16x5r9i9-python2.7-pyqwt-5.2.0/examples/.CPUplot.py-wrapped", line 11, in <module>
    import Qwt5 as Qwt
  File "/nix/store/bcnlfw17fibplj1qcdq3a0vb16x5r9i9-python2.7-pyqwt-5.2.0/lib/python2.7/site-packages/Qwt5/__init__.py", line 32, in <module>
    from Qwt import *
SystemError: dynamic module not initialized properly