号码未添加到列表中的号码

Question

我正在尝试制作一个进化模拟器，但遇到了一些麻烦。我正在尝试将 "random mutation" 添加到列表中的数字，但它们实际上不会加在一起。

def Evolve(evolution, creatures):
    print(creatures)
    creatureNumber = 0
    if evolution == 0:
        print("First Generation:")
        for i in creatures:
            creatureIndex = creatureNumber + 1
            creatureNumber += 1
            print("                    Creature", creatureIndex, ":", i)
            randomMutation = random.randint(-1, 2)
            i += randomMutation
    else:
        print("Evolution", evolution, ":")
        for i in creatures:
            creatureIndex = creatureNumber + 1
            creatureNumber += 1
            print("                    Creature", creatureIndex, ":", i)
            randomMutation = random.randint(-1, 2)
            i += randomMutation
    print("")
    print("Leading Creature:", creatures.index(max(creatures))+ 1,":", max(creatures))
    EvolveQuestion(evolution, creatures)

列表"creatures"在单独的函数中定义。 "i += randomMutation" 似乎只是不把数字加在一起。

Answer 1

我已经指出您忘记了 creatureNumber + 1 中的等号，因此您已经使用更正的代码更新了您的问题，但仍然没有得到预期的结果。好的。这是您的代码存在的下一个主要问题：

如果您有一个像 creatures = [1,1,1,1] 这样的列表，并且您想要将其更改为 [1,2,3,4]，您必须按如下方式进行：

for i, _ in enumerate(creatures):
     creatures[i] = i+1

现在我们回到编码。

很难从你提供的代码中猜出你想要实现什么，但我还是会尝试一下：

import random
creatures = [1,1,1,1]

def Evolve(evolution, creatures):
    print(creatures)
    creatureNumber = 0
    if evolution == 0:
        print("First Generation:")
        for i, item in enumerate(creatures):
            creatureIndex = creatureNumber + 1
            creatureNumber += 1
            print("                    Creature", creatureIndex, ":", creatures[i])
            randomMutation = random.randint(-1, 2)
            creatures[i] += randomMutation
    else:
        print("Evolution", evolution, ":")
        for i, item in enumerate(creatures):
            creatureIndex = creatureNumber + 1
            creatureNumber += 1
            print("                    Creature", creatureIndex, ":", creatures[i])
            randomMutation = random.randint(-1, 2)
            creatures[i] += randomMutation
    print("")
    print(creatures)    
    print("Leading Creature:", creatures.index(max(creatures))+ 1,":", max(creatures))
    print('---')
    # EvolveQuestion(evolution, creatures)

Evolve(0, creatures)
Evolve(1, creatures)
Evolve(2, creatures)
Evolve(3, creatures)
Evolve(4, creatures)
Evolve(5, creatures)

上面的代码是我对您打算实现的目标的最佳猜测，但在某些方面仍然没有任何意义，但至少它显示了一些“进化”。现在我很想知道您是否认为它对您有帮助。我会从你的评论中注意到它，或者如果你接受我的回答:) .

代码作为打印输出给出：

[1, 1, 1, 1]
First Generation:
                    Creature 1 : 1
                    Creature 2 : 1
                    Creature 3 : 1
                    Creature 4 : 1

[3, 0, 2, 3]
Leading Creature: 1 : 3
---
[3, 0, 2, 3]
Evolution 1 :
                    Creature 1 : 3
                    Creature 2 : 0
                    Creature 3 : 2
                    Creature 4 : 3

[3, 1, 4, 2]
Leading Creature: 3 : 4
---
[3, 1, 4, 2]
Evolution 2 :
                    Creature 1 : 3
                    Creature 2 : 1
                    Creature 3 : 4
                    Creature 4 : 2

[5, 3, 3, 2]
Leading Creature: 1 : 5
---
[5, 3, 3, 2]
Evolution 3 :
                    Creature 1 : 5
                    Creature 2 : 3
                    Creature 3 : 3
                    Creature 4 : 2

[6, 2, 3, 1]
Leading Creature: 1 : 6
---
[6, 2, 3, 1]
Evolution 4 :
                    Creature 1 : 6
                    Creature 2 : 2
                    Creature 3 : 3
                    Creature 4 : 1

[5, 3, 4, 0]
Leading Creature: 1 : 5
---
[5, 3, 4, 0]
Evolution 5 :
                    Creature 1 : 5
                    Creature 2 : 3
                    Creature 3 : 4
                    Creature 4 : 0

[4, 4, 6, 1]
Leading Creature: 3 : 6
---

Answer 2

Look here first。您不能修改迭代变量 i += randomMutation。它只会被迭代器返回的下一个元素覆盖 creatures.

号码未添加到列表中的号码

Number is not being added to number in list

python

simulator