## Convert NumPy array to Python list

Use tolist(): >>> import numpy as np >>> np.array([[1,2,3],[4,5,6]]).tolist() [[1, 2, 3], [4, 5, 6]] Note that this converts the values from whatever … Read more

## How do I convert a PIL Image into a NumPy array?

You’re not saying how exactly putdata() is not behaving. I’m assuming you’re doing >>> pic.putdata(a) Traceback (most recent call last): File “…blablabla…/PIL/Image.py”, line … Read more

## How to create a numpy array of all True or all False?

In Python, how do I create a numpy array of arbitrary shape filled with all True or all False? Best Answer 7

## How do I calculate percentiles with python/numpy?

Is there a convenient way to calculate percentiles for a sequence or single-dimensional numpy array? I am looking for something similar to Excel’s … Read more

## Convert array of indices to 1-hot encoded numpy array

Let’s say I have a 1d numpy array a = array([1,0,3]) I would like to encode this as a 2D one-hot array b … Read more

## Better way to shuffle two numpy arrays in unison

I have two numpy arrays of different shapes, but with the same length (leading dimension). I want to shuffle each of them, such … Read more

## How does numpy.newaxis work and when to use it?

When I try numpy.newaxis the result gives me a 2-d plot frame with x-axis from 0 to 1. However, when I try using … Read more

## What is the difference between ndarray and array in numpy?

What is the difference between ndarray and array in Numpy? And where can I find the implementations in the numpy source code? Best … Read more

## Concatenating two one-dimensional NumPy arrays

I have two simple one-dimensional arrays in NumPy. I should be able to concatenate them using numpy.concatenate. But I get this error for … Read more

## How to convert a PIL Image into a numpy array?

Alright, I’m toying around with converting a PIL image object back and forth to a numpy array so I can do some faster … Read more