unittest fixes and work-arounds for older Python versions
unittest fixes and work-arounds for older Python versions

scoder/cython,cython/cython,da-woods/cython,scoder/cython,da-woods/cython,scoder/cython,cython/cython,cython/cython,scoder/cython,da-woods/cython,da-woods/cython,cython/cython