Question

当我在程序运行到结束时运行程序时，它只是挂起，就像停止一样。有人可以帮我解决这个问题吗？我正在尝试开发一种进化算法，以找到通往目标的途径

Stackoverflow说我的问题主要是代码，因此请忽略下一行文本

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这是我的代码：

import turtle
import random
import time
import math



wn = turtle.Screen()
wn.tracer(0)

goal = turtle.Turtle()
goal.shape('circle')
goal.speed(0)
goal.color('red')
goal.penup()
goal.goto(0, 300)
wn.update()





def isCollision(t1, t2):
    d = math.sqrt(math.pow(t1.xcor()-t2.xcor(),2) + math.pow(t1.ycor()-t2.ycor(),2))
    if d < 15:
        return True
    else:
        return False




class Brain:
    def __init__(self, length, rate):
        self.directions = []
        self.step = 0
        self.steps = length
        self.mutation_rate = rate
        self.mutated_list = []

    def brain(self):
        randomize()

    def randomize(self):
        for i in range(self.steps):
            self.directions.append(random.randint(0, 360))

    def clone(self):
        return self.directions

    def mutate(self):

        for move in self.directions:

            if round(random.uniform(0, 1), 3) < self.mutation_rate:
                #print('MUTATAAAAAAA')
                self.mutated_list.append(random.randint(0, 360))
            else:
                self.mutated_list.append(move)

        return self.mutated_list



class Dot:



    def __init__(self):
        self.brain = Brain(500, 0.01)
        self.brain.randomize()
        self.dead = False
        self.reachedGoal = False
        self.isBest = False
        self.fitness = float()
        self.dot = turtle.Turtle()
        self.reset()
        self.update_()

    def reset(self):
        #print('reset')
        self.dot.speed(0)
        self.dot.shape('circle')
        self.dot.shapesize(0.5, 0.5)
        self.dot.penup()
        self.dot.goto(0, -290)




    def update_(self):
        #wn.update()
        if self.dot.xcor() > 310:
            self.dead = True

        if self.dot.xcor() < -310:
            self.dead = True

        if self.dot.ycor() > 310:
            self.dead = True

        if self.dot.ycor() < -310:
            self.dead = True

        if isCollision(self.dot, goal):
            reachedGoal = True
            #dead = True




    def move(self):
        for move in self.brain.directions:
            if not self.dead:
                self.dot.setheading(move)
                self.dot.forward(12)
                self.update_()

                #time.sleep(0.05)


class Population:
    def __init__(self, size):
        self.population = []
        self.size = size
        self.fitness = 10000
        self.best_fitness = 10000
        self.fittest_dot = 0
        self.bad_dead = []
        for i in range(self.size):
            self.population.append(Dot())
        for dot in self.population:
            dot.reset()
            dot.move()
            wn.update()



    def create_new_population(self):
        self.bad_dead = []

        for dot in self.population:
            dot.dead = False

        for dot in self.population:
            dot.reset()
            dot.brain.directions = self.population[self.fittest_dot].brain.directions
            dot.brain.directions = dot.brain.mutate()
            dot.move()
            wn.update()



    def getFittest(self):
        count = 0
        for dot in self.population:

            if not dot.dead:
                self.fitness = math.sqrt((goal.xcor()-dot.dot.xcor())*(goal.xcor()-dot.dot.xcor())+(goal.ycor()-dot.dot.ycor())*(goal.ycor()-dot.dot.ycor()))
                if self.fitness < self.best_fitness:
                    self.best_fitness = self.fitness
                    self.fittest_dot = count
            count += 1
            dot.dead = True


        wn.update()

    def check_for_end(self):
        for dot in self.population:
            #print(dot.dead)
            self.bad_dead.append(dot.dead)

        nTemp = self.bad_dead[0]
        bEqual = True


        for item in self.bad_dead:
          if nTemp != item:
            bEqual = False
            break
          else:
            bad_dead = []
        return bEqual





population = Population(50)
#population.getFittest()

population.getFittest()

if population.check_for_end():
    print('pin')
    population.create_new_population()
print('fit')
population.getFittest()

if population.check_for_end():
    print('pin')
    population.create_new_population()

print('done')


wn.update()


wn.mainloop()

Answer 1

您需要包括某种循环，否则程序将只运行然后退出。我建议一个while循环，该循环将在条件不满足时运行。例如

while True:
  population.getFittest()

  if population.check_for_end():
    print('pin')
    population.create_new_population()
  print('fit')
  population.getFittest()

  if population.check_for_end():
    print('pin')
    population.create_new_population()

  print('done')


  wn.update()

  wn.mainloop()

要在模拟完成时退出循环，应添加一个break语句，该语句将退出循环。

为什么我的程序在结束之前就停止了？

1 个答案: