Comment 1 for bug 671724

Mathias Brodala (mathbr) wrote :

In fact, python2 is the name of the binary which was recently changed to accomodate the move to Python3 as default version.
However, Debian does not yet provide the python2 binary/symlink.

We should not blindly assume the existence of this one though and will think about a fix. At the same time you could file a report against Debian and request to add this symlink.