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DS-1000 / 394 / How can I read a Numpy array from a string? Take a string like:

Problem

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Problem:
How can I read a Numpy array from a string? Take a string like:
"[[ 0.5544  0.4456], [ 0.8811  0.1189]]"
and convert it to an array:
a = from_string("[[ 0.5544  0.4456], [ 0.8811  0.1189]]")
where a becomes the object: np.array([[0.5544, 0.4456], [0.8811, 0.1189]]).
There's nothing I can find in the NumPy docs that does this. 
A:
<code>
import numpy as np
string = "[[ 0.5544  0.4456], [ 0.8811  0.1189]]"
</code>
a = ... # put solution in this variable
BEGIN SOLUTION
<code>

library

Numpy

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Source and history

upstream_id / Original problem ID
394
task_id
12b957e6-65b5-55da-be23-e96e61488465
task_key
default--test--394
task_revision_id
1
config / split
default / test

Official source

initial import