[Discuss-gnuradio] Loops in graphs?

[Thomas Traber]

Trying to build a simple phase locked
loop in python results in the following
error message:

"The graph is not an acyclic graph (It's
got a loop)"

Does this mean it is not possible to
build graphs with loops?
Do I have to do that in C?
Thinking about the variety of loops found 
in radios (AFC, AGC, PLL, ..?) I consider
not beeing able to create loops in
python as a great disadvantage.

Is there any chance to change this?

Thomas