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python - 为什么压缩函数和可迭代的结果不起作用?

转载 作者:太空宇宙 更新时间:2023-11-04 00:12:37 25 4
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所以我有以下代码可以正常工作:

from  concurrent.futures import ProcessPoolExecutor 
import itertools

def grid_search_helper(vec_input):
v1 = vec_input[0]
v2 = vec_input[1]
v3 = vec_input[2]
d = {'v1' : v1, 'v2' : v2, 'v3' : v3}
return(d)

idx = range(0,10)
cutoff = np.ndarray.tolist(np.arange(0.6,0.95,0.05))
opt = [2]

iters = itertools.product(idx, cutoff, opt)

with ProcessPoolExecutor(max_workers = 11) as executor:
for res in executor.map(grid_search_helper,iters):
print(res)

然后我尝试 zip() 来打印 ProcessPoolExecuter 正在处理的可迭代对象,但是当我运行以下代码时没有打印任何内容:

from  concurrent.futures import ProcessPoolExecutor 
import itertools

def grid_search_helper(vec_input):
v1 = vec_input[0]
v2 = vec_input[1]
v3 = vec_input[2]
d = {'v1' : v1, 'v2' : v2, 'v3' : v3}
return(d)

idx = range(0,10)
cutoff = np.ndarray.tolist(np.arange(0.6,0.95,0.05))
opt = [2]

iters = itertools.product(idx, cutoff, opt)

with ProcessPoolExecutor(max_workers = 11) as executor:
for res, itr in zip(executor.map(grid_search_helper,iters), iters):
print(res, itr)

我想不通为什么。有人可以帮忙吗?

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