--- a/mercurial/pure/charencode.py	Fri Nov 27 17:00:00 2020 -0500
+++ b/mercurial/pure/charencode.py	Fri Nov 27 17:03:29 2020 -0500
@@ -21,17 +21,17 @@
 
 
 def asciilower(s):
-    '''convert a string to lowercase if ASCII
+    """convert a string to lowercase if ASCII
 
-    Raises UnicodeDecodeError if non-ASCII characters are found.'''
+    Raises UnicodeDecodeError if non-ASCII characters are found."""
     s.decode('ascii')
     return s.lower()
 
 
 def asciiupper(s):
-    '''convert a string to uppercase if ASCII
+    """convert a string to uppercase if ASCII
 
-    Raises UnicodeDecodeError if non-ASCII characters are found.'''
+    Raises UnicodeDecodeError if non-ASCII characters are found."""
     s.decode('ascii')
     return s.upper()