Filtering even numbers in python [closed]

Question

just started with python and wanted to filter the even numbers from a numpy array:

>array = np.arange(2,10000)
>>print(array)

I know that the remainder of even no./2 should be 0, so part of the filtering condition should look somehow like this:

>if x%2 == 0

But no matter how, I always get an error of some kind. btw I'm using Python 3.

Thanks and Best

Answer 1

One Liner as pointed by Mikel:

print(np.arange(2,10000,2))

This creates an array starting from 2 ending at 10k with a step size of 2 i.e every second number.

Or if you want to use modulus you can try like this:

ar = np.arange(2,10000)
ar = ar[ar%2==0]
print(ar)

Output:

array([   2,    4,    6, ..., 9994, 9996, 9998])

ar%2==0 creates a boolean mask to include only even numbers