How to input a Numpy array

Question

I was going through a solution to a problem which printed the inner and outer array. But while going the solution I was not able to understand the first line in which they took the input. I'm not able to get why they have used int there. The syntax is quite confusing to me. Here is the code:

A,B = [np.array([input().split()],int) for _ in range(2)]
print(np.inner(A,B)[0][0],np.outer(A,B),sep="\n")

int is the dtype specifiying the type of the array. It's the second argument to the np.array() constructor function. — iamchoosinganame
– iamchoosinganame, Commented May 31, 2019 at 14:45

alexanderhurst · Accepted Answer · 2019-05-31 15:09:23Z

3

The usage for numpy.array is numpy.array(object, dtype=None, copy=True, order='K', subok=False, ndmin=0)

All of the named parameters in the form "name"="something" are optional. In that example they are using numpy.array(List, dtype) where the list is the split input and dtype (which stands for data type) is int or integer.

So all [np.array([input().split()],int) does is splits user input (which is input()) into a list and tells numpy to store that as a numpy.array of Integers (rather than strings or floats)

edited May 31, 2019 at 15:09

answered May 31, 2019 at 14:51

alexanderhurst

4763 silver badges8 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

Kenan · Accepted Answer · 2019-05-31 14:51:51Z

0

The syntax of the first line is a list comprehensions that builds a list of numpy arrays where each array contains an int

answered May 31, 2019 at 14:51

Kenan

14.2k9 gold badges47 silver badges56 bronze badges

Collectives™ on Stack Overflow

How to input a Numpy array

2 Answers 2

Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related