def can_sign(self):
        return self._key.has_private()
Fail unless an exception of class excClass is thrown
dataset/ETHPy150Open cloudera/hue/desktop/core/ext-py/pycrypto-2.6.1/lib/Crypto/Signature/PKCS1_PSS.py/PSS_SigScheme.can_sign--crossover with--dataset/ETHPy150Open ionelmc/django-prefetch/tests/test_app/tests.py/PrefetchTests.assertRaises