Fix fstring tests in Py2.6.
Fix fstring tests in Py2.6.

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