I am happy to announce Guppy 3 3.0.4 Guppy 3 is a library and programming environment for Python, currently providing in particular the Heapy subsystem, which supports object and heap memory sizing, profiling and debugging. It also includes a prototypical specification language, the Guppy Specification Language (GSL), which can be used to formally specify aspects of Python programs and generate tests and documentation from a common source. Guppy 3 is a fork of Guppy-PE, created by Sverker Nilsson for Python 2. The main news in this release: o A error message is now displayed pointing to guppy-pe if the package is installed in Python 2, and a warning is now displayed if the package is installed in non-CPython. o Profile Browser is now able to load data dumps and how to perform a dump is documented. The primary differences between Guppy 3 and Guppy-PE, besides the Python version difference, is that: o Classifier byclass removed. There are no more old style classes. o Extended C integer size to work on 64 bit Windows machines. License: MIT The project homepage is on GitHub: https://github.com/zhuyifei1999/guppy3 Enjoy, YiFei Zhu