python - python循环不断崩溃

Question

这是我的代码

def time_to_end_of_world(p_spread,p_cure):
    ...:     my_world=set_up_cities()
    ...:     zombify(my_world,0)
    ...:     count=0
    ...:     while is_end_of_world(my_world)==False:
    ...:         sim_step(my_world,p_spread,p_cure)
    ...:         count+=1
    ...:         return count

我不断得到 1 作为我的出局

如果我将返回计数移出像这样的缩进

def time_to_end_of_world(p_spread,p_cure):
    ...:     my_world=set_up_cities()
    ...:     zombify(my_world,0)
    ...:     count=0
    ...:     while is_end_of_world(my_world)==False:
    ...:         sim_step(my_world,p_spread,p_cure)
    ...:         count+=1
    ...:     return count

程序崩溃...

有任何想法吗？

score 1 · Accepted Answer

很有可能有人会从今年开始关注这个，所以......

我正在做与您相同的任务，并且遇到了相同的问题-但是我找到了解决方法。问题在于 sim_step() 中的 numpy.random.randint()。

随机整数函数不包括括号中的整数，因此您的循环永远不会结束，因为它永远不会感染 City 15；如果您使用 numpy.random.randint(15)，最多只能达到 14 个。更改为 (16)，它应该是固定的。

干杯

score 0 · Accepted Answer

In the first example, you ALWAYS return the first time you enter the loop.

By moving the return statement outside the loop, you wait for is_end_of_world(my_world)==False to become False to exit the loop. It probably never does, leading to your program crashing.

score 0 · Accepted Answer

The first version runs just one step of the simulation. The second attempts to run the simulation until the world ends. So something is going wrong in your sim_step or is_end_or_world code sometime in the steps after the first one.

score 0 · Accepted Answer

the problem must be in the sim_step not actually updating my_world, or is_end_of_world is not ever returning true. the return is supposed to be "not indented" like the second example. post code for sim step and is_end_of_world

python - python循环不断崩溃

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