Not tested on PyPy. With current state of ctypes in PyPy it is unlikely to be worth to support.

[dgpv]

pypy3 -u -m unittest bitcointx.tests.test_scripteval.Test_EvalScript.test_script_bitcoinconsensus

fails with _ctypes.basics.ArgumentError: Expected bytes of length one as character

while the arguments are clearly multi-byte (but even if it was bytes of length 1, this error should not be raised, in my understanding).

It seems that ctypes is a second-class citizen in PyPy land, and cffi is preferred, while python-bitcointx uses ctypes and there's no point in using more heavy ffi package.

Debugging these quirks is too costly.

Because of this, I removed PyPy from the tests in .travis.yml in 302f4f3, to indicate that python-bitcointx cannot be expected to work correctly with PyPy.