use signature so stuff works on 3.6 -- fixes #2382
diff --git a/src/cryptography/utils.py b/src/cryptography/utils.py
index 237d596..27bccbc 100644
--- a/src/cryptography/utils.py
+++ b/src/cryptography/utils.py
@@ -58,6 +58,11 @@
pass
+if hasattr(inspect, "signature"):
+ signature = inspect.signature
+else:
+ signature = inspect.getargspec
+
def verify_interface(iface, klass):
for method in iface.__abstractmethods__:
if not hasattr(klass, method):
@@ -67,9 +72,9 @@
if isinstance(getattr(iface, method), abc.abstractproperty):
# Can't properly verify these yet.
continue
- spec = inspect.getargspec(getattr(iface, method))
- actual = inspect.getargspec(getattr(klass, method))
- if spec != actual:
+ sig = signature(getattr(iface, method))
+ actual = signature(getattr(klass, method))
+ if sig != actual:
raise InterfaceNotImplemented(
"{0}.{1}'s signature differs from the expected. Expected: "
"{2!r}. Received: {3!r}".format(