Uitwerking: L-systemen
import turtle as t
t.speed(0)
t.delay(0)
with open(input()) as f:
ls = f.read().splitlines()
a, n, d = map(int, ls[:3])
s = ls[3]
rs = dict(l.split(':') for l in ls[4:])
for _ in range(d):
s = ''.join(rs.get(c, c) for c in s)
l = []
def pop():
p, h = l.pop()
t.pu()
t.goto(p)
t.pd()
t.seth(h)
for c in s:
{'F': lambda: t.fd(n),
'+': lambda: t.rt(a),
'-': lambda: t.lt(a),
'[': lambda: l.append((t.pos(), t.heading())),
']': lambda: pop()
}.get(c, lambda: 0)()
t.done()
