Well the best thing would be if you didn't import paralel
in multi_polynomial_ideal.py. You should first write some decorators like
leif mentioned based on the trick that Tom showed so it will become easy to
make functions have multiple implementations. So that something like the
following would work:
@first_result
def slow():
sleep(1)
print "slow"
@slow.add_implementation
def faster():
print "faster"
slow() #prints slow
slow(algorithm="faster") #prints faster
slow(algorithm="all") #prints faster since it start both but faster return
before slow.
You should do this because else people might start implementing Toms trick
also in different places in the sage library wich would in the longterm
lead to duplicate and hence not easy to maintain code all around the sage
library.
This, however will not solve your cyclic import problem.
The easiest way to fix this is to move
from sage.rings.all import Integer
in parallel/decorate.py
right before the line:
if isinstance(p_iter, (int, long, Integer)):
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