Fix missing backslashes found via pytest 3.8 (#202)

See: https://docs.python.org/3/reference/lexical_analysis.html#string-and-bytes-literals

Changed in version 3.6: Unrecognized escape sequences produce a DeprecationWarning

Closes #202.

src/drf_yasg/inspectors/base.py

@@ -258,7 +258,7 @@ class SerializerInspector(FieldInspector):
         return NotHandled
 
     def get_request_parameters(self, serializer, in_):
-        """Convert a DRF serializer into a list of :class:`.Parameter`\ s.
+        """Convert a DRF serializer into a list of :class:`.Parameter`\\ s.
 
         Should return :data:`.NotHandled` if this inspector does not know how to handle the given `serializer`.
 
@@ -372,7 +372,7 @@ class ViewInspector(BaseInspector):
         )
 
     def serializer_to_parameters(self, serializer, in_):
-        """Convert a serializer to a possibly empty list of :class:`.Parameter`\ s.
+        """Convert a serializer to a possibly empty list of :class:`.Parameter`\\ s.
 
         :param serializers.BaseSerializer serializer: the ``Serializer`` instance
         :param str in_: the location of the parameters, one of the `openapi.IN_*` constants

src/drf_yasg/inspectors/field.py

@@ -197,7 +197,7 @@ def get_related_model(model, source):
 
 
 class RelatedFieldInspector(FieldInspector):
-    """Provides conversions for ``RelatedField``\ s."""
+    """Provides conversions for ``RelatedField``\\ s."""
 
     def field_to_swagger_object(self, field, swagger_object_type, use_references, **kwargs):
         SwaggerType, ChildSwaggerType = self._get_partial_types(field, swagger_object_type, use_references, **kwargs)
@@ -573,7 +573,7 @@ class ChoiceFieldInspector(FieldInspector):
 
 
 class FileFieldInspector(FieldInspector):
-    """Provides conversions for ``FileField``\ s."""
+    """Provides conversions for ``FileField``\\ s."""
 
     def field_to_swagger_object(self, field, swagger_object_type, use_references, **kwargs):
         SwaggerType, ChildSwaggerType = self._get_partial_types(field, swagger_object_type, use_references, **kwargs)

src/drf_yasg/inspectors/query.py

@@ -9,7 +9,7 @@ from .base import FilterInspector, PaginatorInspector
 
 
 class CoreAPICompatInspector(PaginatorInspector, FilterInspector):
-    """Converts ``coreapi.Field``\ s to :class:`.openapi.Parameter`\ s for filters and paginators that implement a
+    """Converts ``coreapi.Field``\\ s to :class:`.openapi.Parameter`\\ s for filters and paginators that implement a
     ``get_schema_fields`` method.
     """
 

src/drf_yasg/inspectors/view.py

@@ -63,7 +63,7 @@ class SwaggerAutoSchema(ViewInspector):
         -  a list of primitive Parameters parsed as form data
 
         :param list[str] consumes: a list of accepted MIME types as returned by :meth:`.get_consumes`
-        :return: a (potentially empty) list of :class:`.Parameter`\ s either ``in: body`` or ``in: formData``
+        :return: a (potentially empty) list of :class:`.Parameter`\\ s either ``in: body`` or ``in: formData``
         :rtype: list[openapi.Parameter]
         """
         serializer = self.get_request_serializer()
@@ -129,7 +129,7 @@ class SwaggerAutoSchema(ViewInspector):
         return body_override
 
     def get_request_form_parameters(self, serializer):
-        """Given a Serializer, return a list of ``in: formData`` :class:`.Parameter`\ s.
+        """Given a Serializer, return a list of ``in: formData`` :class:`.Parameter`\\ s.
 
         :param serializer: the view's request serializer as returned by :meth:`.get_request_serializer`
         :rtype: list[openapi.Parameter]
@@ -223,7 +223,7 @@ class SwaggerAutoSchema(ViewInspector):
     def get_response_serializers(self):
         """Return the response codes that this view is expected to return, and the serializer for each response body.
         The return value should be a dict where the keys are possible status codes, and values are either strings,
-        ``Serializer``\ s, :class:`.Schema`, :class:`.SchemaRef` or :class:`.Response` objects. See
+        ``Serializer``\\ s, :class:`.Schema`, :class:`.SchemaRef` or :class:`.Response` objects. See
         :func:`@swagger_auto_schema <.swagger_auto_schema>` for more details.
 
         :return: the response serializers