Guppy3 is a programming environment providing object and heap memory sizing, profiling and analysis. It includes a prototypical specification language that can be used to formally specify aspects of Python programs and generate tests and documentation from a common source. This package contains the following subpackages: * etc - Support modules. Contains especially the Glue protocol module. * gsl - The Guppy Specification Language implementation. This can be used to create documents and tests from a common source. * heapy - The heap analysis toolset. It can be used to find information about the objects in the heap and display the information in various ways. * sets - Bitsets and 'nodesets' implemented in C.