diff --git a/src/vfs/extfs/helpers/uc1541 b/src/vfs/extfs/helpers/uc1541
index dc15b4299b..05628a5491 100755
--- a/src/vfs/extfs/helpers/uc1541
+++ b/src/vfs/extfs/helpers/uc1541
@@ -32,23 +32,23 @@ else:
         Dummy logger object. Does nothing.
         """
         @classmethod
-        def debug(*args, **kwargs):
+        def debug(cls, **kwargs):
             pass
 
         @classmethod
-        def info(*args, **kwargs):
+        def info(cls, **kwargs):
             pass
 
         @classmethod
-        def warning(*args, **kwargs):
+        def warning(cls, **kwargs):
             pass
 
         @classmethod
-        def error(*args, **kwargs):
+        def error(cls, **kwargs):
             pass
 
         @classmethod
-        def critical(*args, **kwargs):
+        def critical(cls, **kwargs):
             pass
 
 
@@ -157,7 +157,7 @@ class Disk(object):
         characters with jokers.
         """
 
-        filename = list()
+        filename = []
 
         for chr_ in string:
             if _ord(chr_) == 160:  # shift+space character; $a0
@@ -237,7 +237,7 @@ class Disk(object):
         Traverse through sectors and store entries in _dir_contents
         """
         sector = self.current_sector_data
-        for dummy in range(8):
+        for _ in range(8):
             entry = sector[:32]
             ftype = _ord(entry[2])
 
@@ -247,13 +247,13 @@ class Disk(object):
 
             type_verbose = self._get_ftype(ftype)
 
-            protect = _ord(entry[2]) & 64 and "<" or " "
+            protect = "<" if _ord(entry[2]) & 64 else " "
             fname = entry[5:21]
-            if ftype == 'rel':
-                size = _ord(entry[23])
-            else:
-                size = _ord(entry[30]) + _ord(entry[31]) * 226
-
+            size = (
+                _ord(entry[23])
+                if ftype == 'rel'
+                else _ord(entry[30]) + _ord(entry[31]) * 226
+            )
             self._dir_contents.append({'fname': self._map_filename(fname),
                                        'ftype': type_verbose,
                                        'size': size,
@@ -431,10 +431,7 @@ class Uc1541(object):
         LOG.info("Removing file %s", dst)
         dst = self._get_masked_fname(dst)
 
-        if not self._call_command('delete', dst=dst):
-            return self._show_error()
-
-        return 0
+        return self._show_error() if not self._call_command('delete', dst=dst) else 0
 
     def copyin(self, dst, src):
         """
@@ -551,7 +548,7 @@ class Uc1541(object):
                 if ext == 'del':
                     perms = "----------"
                 else:
-                    perms = "-r%s-r--r--" % (rw.strip() and "-" or "w")
+                    perms = f'-r{rw.strip() and "-" or "w"}-r--r--'
 
                 directory.append({'pattern_name': pattern_name,
                                   'display_name': display_name,
@@ -566,10 +563,7 @@ class Uc1541(object):
         """
         Pass out error output from c1541 execution
         """
-        if self._verbose:
-            return self.err
-        else:
-            return 1
+        return self.err if self._verbose else 1
 
     def _call_command(self, cmd, src=None, dst=None):
         """
@@ -579,20 +573,14 @@ class Uc1541(object):
             delete
             dir/list
         """
-        command = ['c1541', '-attach', self.arch, '-%s' % cmd]
+        command = ['c1541', '-attach', self.arch, f'-{cmd}']
         if src:
             command.append(src)
         if dst:
             command.append(dst)
 
         LOG.debug('executing command: %s', ' '.join(command))
-        # For some reason using write and delete commands and reading output
-        # confuses Python3 beneath MC and as a consequence MC report an
-        # error...therefore for those commands let's not use
-        # universal_newlines...
-        universal_newlines = True
-        if cmd in ['delete', 'write']:
-            universal_newlines = False
+        universal_newlines = cmd not in ['delete', 'write']
         self.out, self.err = Popen(command,
                                    universal_newlines=universal_newlines,
                                    stdout=PIPE, stderr=PIPE).communicate()