Why is python not written in C++ ?

[Lawrence D'Oliveiro]

In message
<44d30ac7-931e-4eb0-9aed-f664c872d438 at l20g2000yqm.googlegroups.com>, 
sturlamolden wrote:

> A C++ compiler can use Python's header files and link with Python's C API
> correctly. But it cannot compile Python's C source code. A C compiler
> is required to compile and build Python.

Since when do you find a C++ compiler not accompanied by a C one?