Print from specific positions in NumPy array

Question

I am new to NumPy and I have created the following array:

import numpy as np

a = np.array([[1,2,3],[4,5,6],[7,8,9]])

and I am wondering if there is a way to print a number from a specific position in the array.

Let’s say I wanted to print number 7, and ONLY number 7. Would that be possible?

Asked By: fatninja

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Answer 1

Seriously??!?

Print third row (index = 2), first column (index = 0)

>>> import numpy as np
>>> a = np.array([[1,2,3],[4,5,6],[7,8,9]])
>>> print a[2][0]
7

Answer 2

>>> b
array([[ 0,  1,  2,  3],
       [10, 11, 12, 13],
       [20, 21, 22, 23],
       [30, 31, 32, 33],
       [40, 41, 42, 43]])
>>> b[2,3]
23

The syntax is [row,column] each indexed from zero, so b[2,3] means third row, fourth column of b.

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