diff --git a/dcc/dsda.py b/dcc/dsda.py
index 2672fb0..9ad07f5 100644
--- a/dcc/dsda.py
+++ b/dcc/dsda.py
@@ -6,51 +6,59 @@ import shutil
 import subprocess
 import zipfile
 
+
 class DSDA(dcc.doom_base.WadMap):
-	def get_parser(self, prog_name):
-		parser = super().get_parser(prog_name)
-		parser.add_argument("-s", "--single", action="store_true")
-		parser.add_argument("-a", "--abbreviation")
-		return parser
+    def get_parser(self, prog_name):
+        parser = super().get_parser(prog_name)
+        parser.add_argument("-s", "--single", action="store_true")
+        parser.add_argument("-a", "--abbreviation")
+        return parser
 
-	def take_action(self, parsed_args):
-		dip = self.demo_in_path()
-		dtp = self.dsda_text_path()
-		if not dtp.exists():
-			command = [self.dsda]
-			if shutil.which("xvfb-run") is not None:
-				command = ["xvfb-run"] + command
-			# TODO: negative tics should seek from the end, but this doesn't seem to work.
-			subprocess.run(command + self.dsda_preamble() +
-				["-fastdemo", dip, "-nosound", "-skiptic", "999999999", "-export_text_file"])
-		editor = "nano"
-		if "EDITOR" in os.environ:
-			editor = os.environ["EDITOR"]
-		subprocess.run([editor, dtp])
-		if parsed_args.abbreviation:
-			fh1 = parsed_args.abbreviation
-			if not parsed_args.single:
-				fh1 += self.map
-		else:
-			fh1 = self.wad[0:2] + self.map
-			if parsed_args.single:
-				fh1 = self.wad[0:min(len(self.wad), 4)]
-		fh2 = ""
-		with open(dtp, mode="r") as f:
-			for line in f:
-				if line[0:4] == "Time":
-					m = re.search("[^0-9]*([0-9]*):([0-9]*).[0-9]*", line)
-					if m is None:
-						continue
-					fh2 = m[1]+m[2]
-					if len(fh2)%2==1:
-						fh2 = "0" + fh2
-					break
-		if not fh2:
-			sys.exit("Failed to match any line in {} against Time regex.".format(dtp))
+    def take_action(self, parsed_args):
+        dip = self.demo_in_path()
+        dtp = self.dsda_text_path()
+        if not dtp.exists():
+            command = [self.dsda]
+            if shutil.which("xvfb-run") is not None:
+                command = ["xvfb-run"] + command
+            # TODO: negative tics should seek from the end, but this doesn't
+            # seem to work.
+            subprocess.run(
+                command + self.dsda_preamble() + [
+                    "-fastdemo", dip, "-nosound", "-skiptic",
+                    "999999999", "-export_text_file"
+                ]
+            )
+        editor = "nano"
+        if "EDITOR" in os.environ:
+            editor = os.environ["EDITOR"]
+        subprocess.run([editor, dtp])
+        if parsed_args.abbreviation:
+            fh1 = parsed_args.abbreviation
+            if not parsed_args.single:
+                fh1 += self.map
+        else:
+            fh1 = self.wad[0:2] + self.map
+            if parsed_args.single:
+                fh1 = self.wad[0:min(len(self.wad), 4)]
+        fh2 = ""
+        with open(dtp, mode="r") as f:
+            for line in f:
+                if line[0:4] == "Time":
+                    m = re.search("[^0-9]*([0-9]*):([0-9]*).[0-9]*", line)
+                    if m is None:
+                        continue
+                    fh2 = m[1]+m[2]
+                    if len(fh2) % 2 == 1:
+                        fh2 = "0" + fh2
+                    break
+        if not fh2:
+            sys.exit(f"Failed to match any line in {dtp} against Time regex.")
 
-		# TODO: demo names other than uv-max.
-		fnf = fh1 + "-" + fh2 + ".zip"
-		with zipfile.ZipFile(self.demos.joinpath(self.wad).joinpath(fnf), mode="w") as zf:
-			zf.write(dip, arcname=dip.name)
-			zf.write(dtp, arcname=dtp.name)
+        # TODO: demo names other than uv-max.
+        fnf = fh1 + "-" + fh2 + ".zip"
+        with zipfile.ZipFile(
+            self.demos.joinpath(self.wad).joinpath(fnf), mode="w"
+        ) as zf:
+            zf.write(dip, arcname=dip.name)
+            zf.write(dtp, arcname=dtp.name)