How to ignore all numpy warnings?

How to ignore all numpy warnings?

How to ignore all numpy warnings?

This recipe helps you ignore all numpy warnings


Recipe Objective

We encounter certain warnings especially while working over nan values. Such warning can often be frustating. But we can handle cautionly.

So this recipe is a short example on how to ignore all numpy warnings.Let's get started.

Step 1 - Import the library

import numpy as np

Let's pause and look at these imports. Numpy is generally used for working over arrays and performing mathematical operations.

Step 2 - Setup the Data

data = np.random.random(1000).reshape(10, 10,10) * np.nan

We have simply setup a random data.

Step 3 - Setup warning controller


Seterr function comes handy for control of warnings. Here all='ignore' helps in ignoring any type of warnings we might encounter.

Step 4 - Calling warning statement

np.nanmedian(data, axis=[1, 2])

Above statement bascially triggers a warning. However, because of seterr function, it's being ignored. We will only see output of above code with no warning in final run.

Step 5 - Lets look at our dataset now

Once we run the above code snippet, we will see:

array([nan, nan, nan, nan, nan, nan, nan, nan, nan, nan])

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