code: fix lint errors

munet/native.py

@@ -735,6 +735,7 @@ def add_watch_log(self, path, watchfor_re=None):
             path: If relative is relative to the nodes ``rundir``
             watchfor_re: Regular expression to watch the log for and raise an exception
                          if found.
+
         Return:
             The watching task if request or None otherwise.
         """
@@ -964,7 +965,7 @@ async def add_host_intf(self, hname, lname, mtu=None):
         self.host_intfs[hname] = lname
 
         # See if this interace is missing and needs to be fixed
-        rc, o, e = self.unet.rootcmd.cmd_status(f"ip -o link show")
+        rc, o, _ = self.unet.rootcmd.cmd_status("ip -o link show")
         m = re.search(rf"\d+:\s+(\S+):.*altname {re.escape(hname)}\W", o)
         if m:
             # need to rename
@@ -975,7 +976,7 @@ async def add_host_intf(self, hname, lname, mtu=None):
             )
             self.unet.rootcmd.cmd_status(f"ip link set {dname} name {hname}")
 
-        rc, o, e = self.unet.rootcmd.cmd_status(f"ip -o link show")
+        rc, o, _ = self.unet.rootcmd.cmd_status("ip -o link show")
         m = re.search(rf"\d+:\s+{re.escape(hname)}:.*", o)
         if m:
             self.unet.rootcmd.cmd_nostatus(f"ip link set {hname} down ")

munet/watchlog.py

@@ -14,6 +14,7 @@
 
 
 class MatchFoundError(Exception):
+    """An error raised when a match is not found."""
     def __init__(self, watchlog, match):
         self.watchlog = watchlog
         self.match = match
@@ -28,6 +29,7 @@ def __init__(self, path, encoding="utf-8"):
 
         Args:
             path: that path of the logfile to watch
+            encoding: the encoding of the logfile
         """
         # Immutable
         self.path = Path(path)
@@ -160,7 +162,6 @@ def snapshot(self):
         Return:
             Newly added text.
         """
-
         # Update the content which may reset marks
         self.update_content()