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  1. import turtle
  2. turtle.tracer(1, 0)
  3.  
  4. def createLSystem(numIters,axiom):
  5.     startString = axiom
  6.     endString = ""
  7.     for i in range(numIters):
  8.         endString = processString(startString)
  9.         startString = endString
  10.  
  11.     return endString
  12.  
  13. def processString(oldStr):
  14.     newstr = ""
  15.     for ch in oldStr:
  16.         newstr = newstr + applyRules(ch)
  17.  
  18.     return newstr
  19.  
  20. def applyRules(ch):  #ПРАВИЛА ИТЕРАЦИИ
  21.     newstr = ""
  22.     if ch == 'F':
  23.         newstr = '-F+F+[+F-F-]-[-F+F+F]'   # Rule 1
  24.     elif ch == 'X':
  25.         newstr = 'X+YF+'  # Rule 2
  26.     elif ch =='Y':
  27.         newstr='-FX-Y'
  28.     else:
  29.         newstr = ch    # no rules apply so keep the character
  30.  
  31.     return newstr
  32.  
  33. stack=[] #СПИСОК КООРДИНАТ ЧЕРЕПУХИ
  34.  
  35. def drawLsystem(aTurtle, instructions, angle, distance):  #ЧТЕНИЕ ПРАВИЛ ЧЕРЕПАХОЙ
  36.     for cmd in instructions:
  37.         if cmd == 'F':
  38.             aTurtle.forward(distance)
  39.         elif cmd == 'B':
  40.             aTurtle.backward(distance)
  41.         elif cmd == '+':
  42.             aTurtle.right(angle)
  43.         elif cmd == '-':
  44.             aTurtle.left(angle)
  45.         elif cmd == '[':                 #НЕ РОБИТ МРАЗЬ
  46.             stack.append(turtle.xcor())
  47.             stack.append(turtle.ycor())
  48.             stack.append(turtle.heading())
  49.         elif cmd == ']':
  50.             x=float(stack.pop(-3))
  51.             y=float(stack.pop(-2))
  52.             a = float(stack.pop(-1))
  53.             turtle.setx(x)
  54.             turtle.sety(y)
  55.             turtle.setheading(a)
  56.  
  57. def main():
  58.     inst = createLSystem(7, "F")   # create the string
  59.     print(inst)
  60.     t = turtle.Turtle()            # create the turtle
  61.     wn = turtle.Screen()
  62.  
  63.     t.up()
  64.     t.back(200)
  65.     t.down()
  66.     t.speed(0)
  67.     drawLsystem(t, inst, 22, 3)   # draw the picture
  68.                                   # angle 60, segment length 5
  69.     wn.exitonclick()
  70.  
  71. main()
  72.  
Runtime error #stdin #stdout #stderr 0.17s 23876KB
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Standard input is empty
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Standard output is empty
stderr
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Traceback (most recent call last):
  File "./prog.py", line 1, in <module>
  File "/usr/lib/python3.7/turtle.py", line 107, in <module>
    import tkinter as TK
ModuleNotFoundError: No module named 'tkinter'
https://ideone.com/EX1Fxz
language:
Python 3 (python  3.12)
created:
5 years ago
visibility:
public

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