1 files changed, 3 insertions, 6 deletions
diff --git a/src/pip/_vendor/idna/compat.py b/src/pip/_vendor/idna/compat.py
index dc896c766..786e6bda6 100644
--- a/src/pip/_vendor/idna/compat.py
+++ b/src/pip/_vendor/idna/compat.py
@@ -2,15 +2,12 @@ from .core import *
 from .codec import *
 from typing import Any, Union
 
-def ToASCII(label):
-    # type: (str) -> bytes
+def ToASCII(label: str) -> bytes:
     return encode(label)
 
-def ToUnicode(label):
-    # type: (Union[bytes, bytearray]) -> str
+def ToUnicode(label: Union[bytes, bytearray]) -> str:
     return decode(label)
 
-def nameprep(s):
-    # type: (Any) -> None
+def nameprep(s: Any) -> None:
     raise NotImplementedError('IDNA 2008 does not utilise nameprep protocol')