properly import exceptions for MIPSolver in #12418

[dimpase]

the exceptions are not properly imported there, and there are no doctests for them:

sage: delsarte_bound_additive_hamming_space(11,3,4,d_star=9)
---------------------------------------------------------------------------
NameError                                 Traceback (most recent call last)
<ipython-input-1-14fed6190a46> in <module>()
----> 1 delsarte_bound_additive_hamming_space(Integer(11),Integer(3),Integer(4),d_star=Integer(9))

/usr/local/src/sage/sage-5.12.beta4/local/lib/python2.7/site-packages/sage/misc/lazy_import.so in sage.misc.lazy_import.LazyImport.__call__ (sage/misc/lazy_import.c:2550)()

/usr/local/src/sage/sage-5.12.beta4/local/lib/python2.7/site-packages/sage/coding/delsarte_bounds.pyc in delsarte_bound_additive_hamming_space(n, d, q, d_star, q_base, isinteger, return_data, solver)
    261       try:
    262         bd=p.solve()
--> 263       except sage.numerical.mip.MIPSolverException, exc:
    264         print "Solver exception: ", exc, exc.args
    265         if return_data:

NameError: global name 'sage' is not defined

Attached is the patch that puts in proper imports for MIPSolver exceptions, and doctests for them.

Apply

*exception_imports.patch​

[dimpase]

the straightforward patch

[dimpase]

Purely my oversight in #12418...

[ppurka]

Looks good to me. Missed this in the previous ticket :-/

[ppurka]

Not sure what is up with the patchbot. It applies and doctests just fine.