Address some pylint issues

usr/lib/python3.8/spoc/cli.py

@@ -21,7 +21,7 @@ class ActionItem:
                 time.sleep(0.2)
                 self.print_progress()
             # Get the result of the future and let it raise exception, if there was any
-            data = future.result()
+            future.result()
         self.print_progress('\n')
 
     def print_progress(self, end='\r'):

usr/lib/python3.8/spoc/flock.py

@@ -8,8 +8,8 @@ from contextlib import contextmanager
 
 @contextmanager
 def lock(lock_file, fail_callback=None):
-    # Open the lock file in append mode first to ensure its existence but not modify any data if it already exists
     with open(lock_file, 'a'):
+        # Open the lock file in append mode first to ensure its existence but not modify any data if it already exists
         pass
     # Open the lock file in read + write mode without truncation
     with open(lock_file, 'r+') as f:

usr/lib/python3.8/spoc/net.py

@@ -28,7 +28,7 @@ def load_leases():
                 leases = [lease.strip().split(None, 1) for lease in f]
                 leases = {ip: hostname for ip, hostname in leases}
             mtime = file_mtime
-    except:
+    except FileNotFoundError:
         interface = get_bridge_interface()
         leases = {str(interface.ip): 'host'}
 

usr/lib/python3.8/spoc/repo_online.py

@@ -52,6 +52,9 @@ def download_archive(archive_url, archive_path, expected_hash, observer=None):
             # If the signature is invalid, redownload the file
             pass
     if do_download:
+        do_download_archive(archive_url, archive_path, expected_hash, observer)
+
+def do_download_archive(archive_url, archive_path, expected_hash, observer=None):
     # Download archive via http(s) and store in temporary directory
     with open(archive_path, 'wb') as f, requests.Session() as session:
         resource = session.get(archive_url, stream=True)