
Kirby Urner writes:
I have a pyfraction.py and a polynomial.py, which contain Fraction and Poly classes respectively.
My problem is each class needs to know about the other, meaning I'm now doing an isinstance(other,Fraction) in Poly, and an isinstance(other,Poly) in Fraction.
So how do I handle this. I have an
import Fraction from pyfraction
at the top of polynomial.py, and an
import Poly from polynomial
at the top of pyfraction.py
This is obviously NOT the way to handle it, because it's a loop. In trying to import Fraction, it hits the line to import polynomial, which it's still trying to deal with.
This problem arises now that I'm using isinstance(foo,bar) and need bar as a global. Earlier, I was doing type(foo).__class__.__name__ == "bar", which was ugly, but didn't require that I actually have any bars hangin' around.
I didn't have any trouble with a mutual import under Python 1.5.2: sample.py: #!/usr/bin/python import woo class Ample: def __init__(self): self.woo = woo.Woohoo() woo.py: #!/usr/bin/python import sample class Woohoo: def __init__(self): pass def gimmeanample(self): return sample.Ample() -- Seth David Schoen <schoen@loyalty.org> | And do not say, I will study when I Temp. http://www.loyalty.org/~schoen/ | have leisure; for perhaps you will down: http://www.loyalty.org/ (CAF) | not have leisure. -- Pirke Avot 2:5