Disable use of pyc file with no matching py file

[Terry Reedy]

On 1/31/2012 11:14 PM, Roy Smith wrote:

> We would love to move to 3.x, for the better unicode support, if nothing
> else.  What's keeping us from doing so is the host of third-party
> modules and tools we depend on that don't yet support 3.x.

Tell that to the authors of packages you use so they no longer say that 
they have not converted for lack of demand ;-)

-- 
Terry Jan Reedy