Proposed change to py-pdf#2144

marcstober · Sep 7, 2023 · 11ddc7b · 11ddc7b
1 parent 05f2a65
commit 11ddc7b
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Showing 2 changed files with 4 additions and 4 deletions.
diff --git a/pypdf/_reader.py b/pypdf/_reader.py
@@ -296,7 +296,7 @@ class PdfReader:
 
     @property
     def viewer_preferences(self) -> Optional[ViewerPreferences]:
-        """Returns the existing ViewerPreferences as a overloaded dictionniary."""
+        """Returns the existing ViewerPreferences as an overloaded dictionary."""
         o = cast(DictionaryObject, self.trailer["/Root"]).get(
             CD.VIEWER_PREFERENCES, None
         )

diff --git a/pypdf/_writer.py b/pypdf/_writer.py
@@ -371,10 +371,10 @@ def set_need_appearances_writer(self, state: bool = True) -> None:
 
     @property
     def viewer_preferences(self) -> Optional[ViewerPreferences]:
-        """Returns the existing ViewerPreferences as a overloaded dictionniary."""
+        """Returns the existing ViewerPreferences as an overloaded dictionary."""
         o = cast(DictionaryObject, self._root_object).get(CD.VIEWER_PREFERENCES, None)
         if o is None:
-            return None
+            o = self._create_viewer_preferences()
         o = o.get_object()
         if not isinstance(o, ViewerPreferences):
             o = ViewerPreferences(o)
@@ -384,7 +384,7 @@ def viewer_preferences(self) -> Optional[ViewerPreferences]:
                 self._root_object[NameObject(CD.VIEWER_PREFERENCES)] = o
         return o
 
-    def create_viewer_preference(self) -> ViewerPreferences:
+    def _create_viewer_preferences(self) -> ViewerPreferences:
         o = ViewerPreferences()
         self._root_object[NameObject(CD.VIEWER_PREFERENCES)] = self._add_object(o)
         return o