PyPy 4.0.1¶ We have released PyPy 4.0.1, three weeks after PyPy 4.0.0. We have fixed a few critical bugs in the JIT compiled code, reported by users. We therefore encourage all users of PyPy to update to this version. There are a few minor enhancements in this version as well. You can download the PyPy 4.0.1 release here: We would like to thank our donors for the continued support of the PyPy proj