Issue #18200: Update the stdlib (except tests) to use
ModuleNotFoundError.
diff --git a/Lib/hashlib.py b/Lib/hashlib.py
index a1bd8b2..c9ef4c9 100644
--- a/Lib/hashlib.py
+++ b/Lib/hashlib.py
@@ -98,7 +98,7 @@
                 return _sha3.sha3_384
             elif bs == '512':
                 return _sha3.sha3_512
-    except ImportError:
+    except ModuleNotFoundError:
         pass  # no extension module, this hash is unsupported.
 
     raise ValueError('unsupported hash type ' + name)
@@ -143,7 +143,7 @@
     __get_hash = __get_openssl_constructor
     algorithms_available = algorithms_available.union(
             _hashlib.openssl_md_meth_names)
-except ImportError:
+except ModuleNotFoundError:
     new = __py_new
     __get_hash = __get_builtin_constructor