use getattr(system,'DEBUG',False) in capa_problem, and log.error in responsetypes

djangoapps/courseware/capa/capa_problem.py

@@ -111,7 +111,7 @@ class LoncapaProblem(object):
             self.seed=struct.unpack('i', os.urandom(4))[0]
 
         ## Parse XML file
-        if hasattr(system,'DEBUG') and system.DEBUG:
+        if getattr(system,'DEBUG',False):
             log.info("[courseware.capa.capa_problem.lcp.init]  fileobject = %s" % fileobject)
         file_text = fileobject.read()
         self.fileobject = fileobject	# save it, so we can use for debugging information later

djangoapps/courseware/capa/responsetypes.py

@@ -330,6 +330,7 @@ def sympy_check2():
         except Exception, err:
             msg = '[courseware.capa.responsetypes.customresponse] error getting student answer from %s' % student_answers
             msg += '\n idset = %s, error = %s' % (idset,err)
+            log.error(msg)
             raise Exception,msg
 
         # global variable in context which holds the Presentation MathML from dynamic math input