On python 3.13 some Lpy system give Windows fatal exception: access violation like this one:
from random import *
p1 = 0.550000
p2 = 0.450000
Axiom: _(1)[f(50)+90f(10)]-(90)P(1,0)
derivation length: 100
# A = branching state
# B = non-branching state
def Start():
global m
m = 0
production:
P(x,t) :
if t <= 10 : produce T[G(x)]P(x,t+1)
else :
global m
m = 1
produce *
G(x) :
if m==1 :
produce +(90)S(x)
S(x) :
if random() <= 0.5: produce A(x)
else: produce B(x)
A(x) :
if random() <= p1: produce I[M(x)]A(1-x)
else: produce IB(1-x)
B(x) :
if random() <= p2: produce IB(1-x)
else: produce I[M(x)]A(1-x)
homomorphism:
T : produce ;(1)f(40);(1)@c(1)
M(x) :
if x==0 : produce ;(2)+F(20)
elif x==1 : produce ;(2)-F(20)
I : produce ;(1)F(2)
A(x) : produce ;(1)@O(3)
B(x) : produce ;(2)@O(3)And for instance a very simple one works like:
Axiom: A
production:
A --> A[+A]A[-A]
homomorphism:
maximum depth:2
A --> BCB
B --> F
C --> f@Of
endlsystem
On python 3.13 some Lpy system give Windows fatal exception: access violation like this one:
And for instance a very simple one works like: