Fix gist.history keyerrors

docs/source/release-notes/2.0.0.rst

@@ -1,4 +1,4 @@
-2.0.0: 2020-01-06
+2.0.0: 2020-01-10
 -----------------
 
 Features Added
@@ -10,6 +10,11 @@ Features Added
 - Remove compatibility imports for Python 2.
 - Remove dev-dependency for mock.
 
+Bugs Fixed
+``````````
+
+* Key errors on Gist.history.
+
 Removals
 ````````
 
@@ -56,4 +61,3 @@ Removals
 - ``Organization#add_member`` add ``username`` to ``team``.
 - ``Organization#events`` use ``Organization#public_events``
 - ``Issue#assign`` use ``issues.issue.Issue.add_assignees``
-

src/github3/gists/history.py

@@ -43,24 +43,24 @@ class GistHistory(models.GitHubCore):
         The number of deletions from the gist compared to the previous
         revision.
 
-    .. attribute:: totoal
+    .. attribute:: total
 
         The total number of changes to the gist compared to the previous
         revision.
     """
 
-    def _update_attributes(self, history):
+    def _update_attributes(self, history) -> None:
         self.url = self._api = history["url"]
         self.version = history["version"]
         self.user = users.ShortUser(history["user"], self)
         self.change_status = history["change_status"]
-        self.additions = self.change_status["additions"]
-        self.deletions = self.change_status["deletions"]
+        self.additions = self.change_status.get("additions")
+        self.deletions = self.change_status.get("deletions")
         self.total = self.change_status["total"]
         self.committed_at = self._strptime(history["committed_at"])
 
-    def _repr(self):
-        return "<Gist History [{0}]>".format(self.version)
+    def _repr(self) -> str:
+        return f"<Gist History [{self.version}]>"
 
     def gist(self):
         """Retrieve the gist at this version.