python3 numpy：数组的索引过多

Question

I have a value, just like:

a = np.array({'a':1})

Then, I want to get the dict from a. But error happens when I use a[0]:

IndexError: too many indices for array

I have a look at the shape of a:

>>> a.shape
()

So, how to get the value from a?

Answer 1

您应该使用列表创建数组；

a = np.array([{'a':1}])

Answer 2

galmeriol is right. Go for as he has suggested.

>>> a.all()
{'a': 1}
>>>> a.all()['a']
1

Answer 3

You can access it like this,

import numpy

a = numpy.array({'a': 1, 'b': 2})
a.item()['a']
# 1