diff -r 52528570312e -r 70f8c64812db mercurial/dagparser.py
--- a/mercurial/dagparser.py	Sat Mar 13 00:40:46 2021 -0500
+++ b/mercurial/dagparser.py	Sat Mar 13 00:41:37 2021 -0500
@@ -168,9 +168,9 @@
     if not desc:
         return
 
-    wordchars = pycompat.bytestr(
-        string.ascii_letters + string.digits
-    )  # pytype: disable=wrong-arg-types
+    # pytype: disable=wrong-arg-types
+    wordchars = pycompat.bytestr(string.ascii_letters + string.digits)
+    # pytype: enable=wrong-arg-types
 
     labels = {}
     p1 = -1
@@ -179,9 +179,9 @@
     def resolve(ref):
         if not ref:
             return p1
-        elif ref[0] in pycompat.bytestr(
-            string.digits
-        ):  # pytype: disable=wrong-arg-types
+        # pytype: disable=wrong-arg-types
+        elif ref[0] in pycompat.bytestr(string.digits):
+            # pytype: enable=wrong-arg-types
             return r - int(ref)
         else:
             return labels[ref]
@@ -215,9 +215,9 @@
 
     c = nextch()
     while c != b'\0':
-        while c in pycompat.bytestr(
-            string.whitespace
-        ):  # pytype: disable=wrong-arg-types
+        # pytype: disable=wrong-arg-types
+        while c in pycompat.bytestr(string.whitespace):
+            # pytype: enable=wrong-arg-types
             c = nextch()
         if c == b'.':
             yield b'n', (r, [p1])
@@ -225,9 +225,9 @@
             r += 1
             c = nextch()
         elif c == b'+':
-            c, digs = nextrun(
-                nextch(), pycompat.bytestr(string.digits)
-            )  # pytype: disable=wrong-arg-types
+            # pytype: disable=wrong-arg-types
+            c, digs = nextrun(nextch(), pycompat.bytestr(string.digits))
+            # pytype: enable=wrong-arg-types
             n = int(digs)
             for i in pycompat.xrange(0, n):
                 yield b'n', (r, [p1])