Minor i18n fixes prompted by translators

common/lib/capa/capa/responsetypes.py

@@ -1218,8 +1218,12 @@ class NumericalResponse(LoncapaResponse):
             for inclusion, answer in zip(self.inclusion, self.answer_range):
                 boundary = self.get_staff_ans(answer)
                 if boundary.imag != 0:
+                    # Translators: This is an error message for a math problem. If the instructor provided a boundary
+                    # (end limit) for a variable that is a complex number (a + bi), this message displays.
                     raise StudentInputError(_("There was a problem with the staff answer to this problem: complex boundary."))
                 if isnan(boundary):
+                    # Translators: This is an error message for a math problem. If the instructor did not provide
+                    # a boundary (end limit) for a variable, this message displays.
                     raise StudentInputError(_("There was a problem with the staff answer to this problem: empty boundary."))
                 boundaries.append(boundary.real)
                 if compare_with_tolerance(

common/lib/xmodule/xmodule/capa_base.py

@@ -1384,6 +1384,7 @@ class CapaMixin(CapaFields):
             self.track_function_unmask('reset_problem_fail', event_info)
             return {
                 'success': False,
+                # Translators: A student must "make an attempt" to solve the problem on the page before they can reset it.
                 'error': _("Refresh the page and make an attempt before resetting."),
             }
 

lms/templates/open_ended_problems/open_ended_flagged_problems.html

@@ -22,7 +22,7 @@
 
         <h1>${_("Flagged Open Ended Problems")}</h1>
         <h2>${_("Instructions")}</h2>
-        <p>${_("Here are a list of open ended problems for this course that have been flagged by students as potentially inappropriate.")}</p>
+        <p>${_("Here is a list of open ended problems for this course that have been flagged by students as potentially inappropriate.")}</p>
         % if success:
         % if len(problem_list) == 0:
         <div class="message-container">

lms/templates/peer_grading/peer_grading.html

@@ -18,7 +18,7 @@ criteria.{end_li_tag}
         <div class="peer-grading-tools">
             <h1 class="peer-grading-title">${_("Peer Grading")}</h1>
             <h2 class="peer-grading-instructions">${_("Instructions")}</h2>
-            <p>${_("Here are a list of problems that need to be peer graded for this course.")}</p>
+            <p>${_("Here is a list of problems that need to be peer graded for this course.")}</p>
             % if success:
                 % if len(problem_list) == 0:
                 <div class="message-container">