How do I use NumPy in Python?

How do I use NumPy in Python?

NumPy is a powerful library for numerical computations in Python. You can start by installing it using pip install numpy. What specific functionality are you interested in?

I want to create arrays and perform some basic operations.

You can create a NumPy array using np.array(). For example, import numpy as np; arr = np.array([1, 2, 3]). You can perform operations like addition, multiplication, and more directly on these arrays.

Can you show me an example of adding two arrays?

Sure! If you have two arrays, arr1 = np.array([1, 2, 3]) and arr2 = np.array([4, 5, 6]), you can add them using result = arr1 + arr2, which will give you array([5, 7, 9]).

What about matrix operations?

For matrix operations, you can use np.dot() for dot products or np.matmul() for matrix multiplication. For example, np.dot(arr1.reshape(3,1), arr2.reshape(1,3)) will give you a matrix product.