numpy如何获取array中数组元素的索引位置

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                                            <span class="time">2017年08月05日 10:36:59</span>
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# -*- coding: utf-8 -*-  
import numpy as np  
  
arr = np.random.randint(0,10, (5,))  
index = np.argwhere(arr < 5)

# -*- coding: utf-8 -*-
import numpy as np

arr = np.random.randint(0,10, (5,))
index = np.argwhere(arr < 5)

# -*- coding: utf-8 -*-  
import numpy as np  
  
”“” 
arr =  
    9 3 7 0  
    3 4 2 4  
    3 6 4 4  
     
index =  
    0   1 
    0   3 
    1   0 
    1   1 
    1   2 
    1   3 
    2   0 
    2   2 
    2   3 
”“”  
arr = np.random.randint(0,10, (3,4))  
index = np.argwhere(arr < 5)  

# -*- coding: utf-8 -*-
import numpy as np

"""
arr = 
    9 3 7 0 
    3 4 2 4 
    3 6 4 4 

index = 
    0   1
    0   3
    1   0
    1   1
    1   2
    1   3
    2   0
    2   2
    2   3
"""

arr = np.random.randint(0,10, (3,4))
index = np.argwhere(arr < 5)

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