Per jschlyter's comments

Author: rohe

src/cryptojwt/jwk/__init__.py

@@ -291,7 +291,7 @@ def update(self):
         pass
 
     def key_len(self):
-        raise NotImplemented()
+        raise NotImplemented
 
 
 def pems_to_x5c(cert_chain):

src/cryptojwt/jwk/ec.py

@@ -262,7 +262,7 @@ def key_len(self):
         elif self.pub_key:
             return self.pub_key.key_size
         else:
-            raise KeyNotFound()
+            raise KeyNotFound
 
 
 def cmp_keys(a, b, key_type):

src/cryptojwt/jwk/hmac.py

@@ -155,7 +155,7 @@ def key_len(self):
         if self.key:
             return len(self.key)
         else:
-            raise KeyNotFound()
+            raise KeyNotFound
 
 
 def new_sym_key(use="", bytes=24, kid=""):

src/cryptojwt/jwk/rsa.py

@@ -478,7 +478,7 @@ def key_len(self):
         elif self.pub_key:
             return self.pub_key.key_size
         else:
-            raise KeyNotFound()
+            raise KeyNotFound
 
 
 def new_rsa_key(key_size=2048, kid="", public_exponent=65537, **kwargs):