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POMaking a Sierpinski triangle using fractals, classes and swampy's TurtleWorld - Python
 

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  1. POMaking a Sierpinski triangle using fractals, classes and swampy's TurtleWorld - Python
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    <p>I have this Python code: </p> <pre><code>import math, random, sys from swampy.TurtleWorld import * world = TurtleWorld() Rasmus = Turtle() Rasmus.delay = 0.000002 class rule(object): def __init__(self): self.rule={} #we make an empty dictionary def newrule(self,leftside,rightside): self.rule[leftside]=rightside #we fill the dictionary def expand (self,oldlist,depth): if depth &lt;= 0: return oldlist newlist=[] # we make an empty new list for i in oldlist: if i not in self.rule: newlist.append(i) else: newlist.append(self.expand(self.rule[i],depth-1)) return newlist class command(object): def __init__(self, cmd, length): self.cmd = cmd self.length = length def execute(self, turtle, length): if self.cmd=='lt': lt(turtle, int(self.length[0])) if self.cmd=='rt': rt(turtle, int(self.length[0])) if self.cmd=='fd': fd(turtle, length) if self.cmd=='bk': bk(turtle, length) if self.cmd=='scale': length = length*float(self.length[0]) class Fractal(object): def __init__(self, rules, commands, start, length, depth): self.rules = rules self.commands = commands self.start = start self.length = length self.depth = depth def draw(self, oldlist): for i in oldlist: if type(i) == list: self.draw(i) else: cmd = self.commands[i] cmd.execute(Rasmus, self.length) def read(): files = open('sierpinski2.fdl') commands = {} r = rule() for line in files: line = line.strip() oldlist = line.split(' ') if oldlist[0] == 'start': start = oldlist[1:] elif oldlist[0] == 'rule': r.newrule(oldlist[1], oldlist[3:]) elif oldlist[0] == 'cmd': cmd = command(oldlist[2], oldlist[3:]) commands[oldlist[1]] = cmd elif oldlist[0] == 'length': length = int(oldlist[1]) elif oldlist[0] == 'depth': depth = int(oldlist[1]) return Fractal(start, r, commands, length, depth) re = read() print re.commands.keys() length = re.rules.expand(re.start , re.depth) re.draw(l) wait_for_user() </code></pre> <p>which should extract information from a sierpinski.fdl file, which looks like this: </p> <pre><code>start F L F L F L rule F -&gt; F L F L F L F F length 8 depth 5 cmd F fd cmd L lt 120 </code></pre> <p>My problem is that when I run this, it gives me this error:</p> <pre><code>Traceback (most recent call last): File "C:\Python27\PythonScripts\swampy-2.1.1\swampy\Projekt del 2.py", line 81, in &lt;module&gt; print re.commands.keys() AttributeError: 'rule' object has no attribute 'keys' </code></pre> <p>I know that the problem lie in the:</p> <pre><code>re = read() print re.commands.keys() length = re.rules.expand(re.start , re.depth) re.draw </code></pre> <p>Part of the code, where I enable the execution of the program, but I can't seem to fix it.</p> <p>I am using python 2.7.5 </p>
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