TypeError: no canonical coercion from <type 'NoneType'> to Callable function ring with argument N [closed]

asked 2016-11-14 22:05:24 -0500 This post is a wiki. Anyone with karma >750 is welcome to improve it.

def eqDtm(eqn, nBelow, nAbove):#eqDtm is shortened for equilibrium determiner. eqn = f(N) if f(nBelow) >0 and f(nAbove) < 0: print "stable" elif f(nBelow) < 0 and f(nAbove) > 0: print "unstable" elif f(nBelow) > 0 and f(nAbove) > 0: print "semistable" elif f(nBelow) < 0 and f(nAbove) < 0: print "semistable" else: print "Not an equilibrium point" ---------- from random import uniform def randomGen(num,num2): uniform(num, num2) ---------- var("r,N,A,K") r= 0.1 A= 5. K= 100 eqn = (rN(1-(N/K))*((N/A)-1)) Eq = [0, 5, 100] for value in Eq: if value == max(Eq): eqDtm(eqn, randomGen(Eq,Eq),randomGen(Eq,Eq+1)) print "maximum equilibirum point" elif value == min(Eq): eqDtm(eqn, randomGen(Eq-1, Eq),randomGen(Eq,Eq)) print "minimum equilibirum point" else: eqDtm(eqn, randomGen(Eq,Eq),randomGen(Eq,Eq)) print "neither"

I don't understand the error that's specified in the title. Can anyone explain this?

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