[CORE] Fixes two new Pylint errors related to uncaught exceptions issues

archey/__main__.py

@@ -173,11 +173,11 @@ def main():
 
     # Has the screenshot flag been specified ?
     if args.screenshot is not None:
-        # If so, but still _falsy_, pass `None` as no output file has been specified by the user.
+        screenshot_taken = False
         try:
+            # If so, but still _falsy_, pass `None` as there is no user-defined output file.
             screenshot_taken = take_screenshot((args.screenshot or None))
         except KeyboardInterrupt:
-            screenshot_taken = False
             print()
         finally:
             sys.exit((not screenshot_taken))

archey/entries/temperature.py

@@ -75,7 +75,8 @@ class Temperature(Entry):
             if whitelisted_chip is not None:
                 sensors_args.append(whitelisted_chip)
 
-            # Uses the `sensors` program (from lm-sensors) to interrogate thermal chip-sets.
+            # Uses the `sensors` program (from lm-sensors) to query thermal chipsets.
+            error_message = None
             try:
                 sensors_output = run(
                     sensors_args,
@@ -84,7 +85,6 @@ class Temperature(Entry):
                     check=True
                 )
             except FileNotFoundError:
-                error_message = None
                 return None
             except CalledProcessError as called_process_error:
                 error_message = called_process_error.stderr