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# Python | Check if all values in numpy are zero

• Last Updated : 12 Mar, 2019

Given a numpy array, the task is to check whether the numpy array contains all zeroes or not. Let’s discuss few ways to solve the above task.

Method #1: Getting count of Zeros using `numpy.count_nonzero()`

 `# Python code to demonstrate``# to count the number of elements``# in numpy which are zero`` ` `import` `numpy as np`` ` `ini_array1 ``=` `np.array([``1``, ``2``, ``3``, ``4``, ``5``, ``6``, ``0``])``ini_array2 ``=` `np.array([``0``, ``0``, ``0``, ``0``, ``0``, ``0``])`` ` `# printing initial arrays``print``(``"initial arrays"``, ini_array1)``print``(ini_array2)`` ` `# code to find whether all elements are zero``countzero_in1 ``=` `np.count_nonzero(ini_array1)``countzero_in2 ``=` `np.count_nonzero(ini_array2)`` ` `# printing result``print``(``"Number of non-zeroes in array1 : "``, countzero_in1)``print``(``"Number of non-zeroes in array2 : "``, countzero_in2)`
Output:
```initial arrays [1 2 3 4 5 6 0]
[0 0 0 0 0 0]
Number of non-zeroes in array1 :  6
Number of non-zeroes in array2 :  0
```

Method #2: Using `numpy.any()`

 `# Python code to check that whether``# all elemenst in numpy are zero`` ` `import` `numpy as np`` ` `ini_array1 ``=` `np.array([``1``, ``2``, ``3``, ``4``, ``5``, ``6``, ``0``])``ini_array2 ``=` `np.array([``0``, ``0``, ``0``, ``0``, ``0``, ``0``])`` ` `# printing initial arrays``print``(``"initial arrays"``, ini_array1)`` ` `# code to find whether all elements are zero``countzero_in1 ``=` `not` `np.``any``(ini_array1)``countzero_in2 ``=` `not` `np.``any``(ini_array2)`` ` `# printing result``print``(``"Whole array contains zeroes in array1 ?: "``, countzero_in1)``print``(``"Whole array contains zeroes in array2 ?: "``, countzero_in2)`
Output:
```initial arrays [1 2 3 4 5 6 0]
Whole array contains zeroes in array1 ?:  False
Whole array contains zeroes in array2 ?:  True
```

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