为什么我在运行代码时出现错误？

Question

我想计算种群中每条染色体的适应度函数，但是我运行代码

时总是出错

population = np.random.randint(x1,y2, size=(100, 2))
def fitness_func(x1, y1):
x2  , y2  = x1 + 160 , y1 + 60
x = 0
Im = Image.open("D:\hagar\Genetic Algorithm\Project\Binary Image.png")
for i in range (x1,x2):
    for j in range (y1,y2):
        r, g, b = Im.getpixel((i,j))
        a = (r, g, b)
        x = x + int(r/255)+ int(g/255)+ int (b/255)
return x

由于以下部分，我得到了错误：

for chromosome in population:
print(fitness_func(population[chromosome][0],population[chromosome][1]))

前一部分的错误信息是

Traceback (most recent call last): File "d:\hagar\Genetic Algorithm\Project\GA Eye Detection.py", line 60, in print(fitness_func(population[chromosome][0],population[chromosome][1])) IndexError: index 143 is out of bounds for axis 0 with size 100

我也试着写成：

for chromosome in 10:
print(fitness_func(population[chromosome][0],population[chromosome][1]))

这部分的错误信息是：

Traceback (most recent call last): File "d:\hagar\Genetic Algorithm\Project\GA Eye Detection.py", line 59, in for chromosome in 10: TypeError: 'int' object is not iterable

你能帮帮我吗？

Answer 1

对于你的第一个错误，你应该写

for chromosome in population:
    print(fitness_func(chromosome[0], chromosome[1]))

因为 chromosome 是 population 中的一项而不是索引

对于你的第二个错误，你应该这样做

for chromosome in range(10):
    print(fitness_func(population[chromosome][0], population[chromosome][1]))

为什么我在运行代码时出现错误？

Why I am getting Errors when I run the code?

python

genetic-algorithm

为什么我在 运行 代码时出现错误？

Why I am getting Errors when I run the code?

python

genetic-algorithm

为什么我在运行代码时出现错误？