Python中创建一个字典，“numpy.ndarray”

Question

我有一个空的“numpy.ndarray”

import numpy as np 
my_grid = np.zeros((5, 5)) 

parse = "max","min","avg" 

我想创建一个字典，其中解析的每个元素的“钥匙”

从

收藏导入defaultdict

GridMetric = dict() 
for arg in parse: 
    GridMetric[arg].append(my_grid) 

，但我得到这个错误

Traceback (most recent call last): 
    File "<editor selection>", line 3, in <module> 
KeyError: 'max' 

Answer 1

如果你想要的是一本字典的键是所谓的解析和列表的不同元素，其价值都是相同的阵列，那么你的代码以下更改应该工作：

import numpy as np 
my_grid = np.zeros((5, 5)) 

parse = ["max","min","avg"] 

d = {} 
for arg in parse: 
    d[arg] = my_grid