feat(numericalInput): change in utils file to pass pylint checks

Author: jesusbalderramawgu

cms/djangoapps/contentstore/api/views/utils.py

@@ -18,6 +18,7 @@
 from calc.preview import latex_preview
 import pyparsing
 
+
 @view_auth_classes()
 class BaseCourseView(DeveloperErrorViewMixin, GenericAPIView):
     """
@@ -138,9 +139,11 @@ def _wrapper_view(self, request, course_id, *args, **kwargs):
         return view(self, request, course_key, *args, **kwargs)
     return _wrapper_view
 
-class NumericalInputValidationView(GenericAPIView):
 
+class NumericalInputValidationView(GenericAPIView):
+    """Class in charge of NumericalInputValidations"""
     def post(self, request):
+        """function to validate a math expression (formula) and return of the numeric input is valid or not"""
         result = {'preview': '',
                   'is_valid': True,
                   'error': ''}