Fix slackroom purpose (#97)

CHANGELOG.md

@@ -9,6 +9,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 ### Changed
  - refactored user cache to allow organisation level users/bots #95 (@gdelaney)
 ### Fixed
+ - setting SlackRoom purpose. (@jcfrt)
 
 ## [0.2.1] 2022-10-02
 ### Added

src/slackv3/room.py

@@ -142,7 +142,7 @@ def join(self, username=None, password=None):
             join_failure = False
         except SlackApiError as e:
             log.error(f"Unable to join '{self.name}'. Slack API Error {str(e)}")
-        except BotUserAccessError as e:
+        except BotUserAccessError:
             log.error(f"OAuthv1 bot token not allowed to join channels. '{self.name}'.")
 
         if join_failure:
@@ -221,8 +221,8 @@ def purpose(self):
 
     @purpose.setter
     def purpose(self, purpose):
-        log.info(f"Setting purpose of {self} ({self.id}) to {topic}.")
-        res = self._webclient.conversations_setPurpose(channel=self.id, purpose=purpse)
+        log.info(f"Setting purpose of {self} ({self.id}) to {purpose}.")
+        res = self._webclient.conversations_setPurpose(channel=self.id, purpose=purpose)
         if res["ok"] is True:
             self._cache["purpose"] = purpose
         else: