commit 933dfd7504e521a27fd8b94d02b79f9ed08f4631
author Christian Heimes <christian@python.org> Sat Mar 27 14:55:03 2021 +0100
committer GitHub <noreply@github.com> Sat Mar 27 06:55:03 2021 -0700
tree daf6dda084ba6c854b579350392dfa31c51193db
parent 5d6e8c1c1a5f667cdce99cb3c563ac922198678d

bpo-40645: use C implementation of HMAC (GH-24920)



- [x] fix tests
- [ ] add test scenarios for old/new code.

Signed-off-by: Christian Heimes <christian@python.org>

Lib/hashlib.py

diff --git a/Lib/hashlib.py b/Lib/hashlib.py
index 58c340d..ffa3be0 100644
--- a/Lib/hashlib.py
+++ b/Lib/hashlib.py
@@ -173,6 +173,7 @@ def __hash_new(name, data=b'', **kwargs):
     algorithms_available = algorithms_available.union(
             _hashlib.openssl_md_meth_names)
 except ImportError:
+    _hashlib = None
     new = __py_new
     __get_hash = __get_builtin_constructor