The Python Itanium Demangler is a pure Python parser for the Itanium
C++ ABI symbol mangling language. Note that MSVC mangling language is
not supported.

This demangler generates an abstract syntax tree from mangled symbols,
which can be used for directly extracting type information, as opposed
to having to interpret the C++ source code corresponding to the
demangled symbol

There is also a built-in AST stringifier, so the demangler can be used
as a replacement for c++filt or for formatting backtraces.