Question

How to create 2D int array with numpy in Python

Answer 1

import numpy as npy
  
arr = npy.empty([2, 3], dtype = int) 

print(arr.shape)
print(arr.dtype)
print(arr) 

'''
run:

(2, 3)
int64
[[14329654312        1812568 14066430928]
 [145096484272 14012338192               0]]
 
'''

 

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Answer 2

import numpy 
  
arr = numpy.matrix([[1, 2], [3, 4], [5, 6]], numpy.int)

print(arr.shape)
print(arr.dtype)
print(arr) 

'''
run:

(3, 2)
int64
[[1 2]
 [3 4]
 [5 6]]

'''

 

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Answer 3

import numpy 
  
arr = numpy.zeros((3, 2), numpy.int)

print(arr.shape)
print(arr.dtype)
print(arr) 

'''
run:

(3, 2)
int64
[[0 0]
 [0 0]
 [0 0]]

'''

 

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