[...] > Derive your own subclass of complex and define those methods.
I think something as basic as an angle/arg of complex number definetly belongs to the interface, and it would not even require a great effort to put it there most complex formulas out there use Euler representation it's a waste of code lines (and programmers time) to write 3 liner functions for the transformion between a+bj <-> (r,angle) Python makes things covenient so we have complex numbers in the core language the calculations where perfectly possible without them using (re, im) tupels and many many sin/cos in the code but imagine how ugly it would be .. I would like see Python as a competitor to Matlab etc Regards -- Daniel -- http://mail.python.org/mailman/listinfo/python-list
