Use new removeprefix and removesuffix

sabnzbd/bpsmeter.py

@@ -382,7 +382,7 @@ class BPSMeter:
 
         # Always trim the list to the max-length
         if len(self.bps_list) > BPS_LIST_MAX:
-            self.bps_list = self.bps_list[len(self.bps_list) - BPS_LIST_MAX :]
+            self.bps_list = self.bps_list[-BPS_LIST_MAX:]
 
     def get_sums(self):
         """return tuple of grand, month, week, day totals"""

sabnzbd/filesystem.py

@@ -295,10 +295,10 @@ def sanitize_and_trim_path(path: str) -> str:
     if sabnzbd.WINDOWS:
         if path.startswith("\\\\?\\UNC\\"):
             new_path = "\\\\?\\UNC\\"
-            path = path[8:]
+            path = path.removeprefix("\\\\?\\UNC\\")
         elif path.startswith("\\\\?\\"):
             new_path = "\\\\?\\"
-            path = path[4:]
+            path = path.removeprefix("\\\\?\\")
 
     path = path.replace("\\", "/")
     parts = path.split("/")

sabnzbd/misc.py

@@ -1579,7 +1579,7 @@ def convert_sorter_settings():
 def convert_history_retention():
     """Convert single-option to the split history retention setting"""
     if "d" in cfg.history_retention():
-        days_to_keep = int_conv(cfg.history_retention().strip()[:-1])
+        days_to_keep = int_conv(cfg.history_retention().strip().removesuffix("d"))
         cfg.history_retention_option.set("days-delete")
         cfg.history_retention_number.set(days_to_keep)
     else:

sabnzbd/sorting.py

@@ -283,7 +283,7 @@ class Sorter:
         if ends_in_file(sort_string):
             extension = True
             if sort_string.endswith(".%ext"):
-                sort_string = sort_string[:-5]  # Strip '.%ext' off the end; other %ext may remain in sort_string
+                sort_string = sort_string.removesuffix(".%ext")  # Strip '.%ext' off the end; other %ext may remain
             if self.is_season_pack:
                 # Create a record of the filename part of the sort_string
                 _, self.season_pack_setname = os.path.split(sort_string)
@@ -658,7 +658,7 @@ def guess_what(name: str) -> MatchesDict:
 
     if digit_fix:
         # Unfix the title
-        guess["title"] = guess.get("title", "")[len(digit_fix) :]
+        guess["title"] = guess.get("title", "").removeprefix(digit_fix)
 
     # Handle weird anime episode notation, that results in the episode number ending up as the episode title
     if (