create 2d numpy array in python

Title: Creating 2D NumPy Arrays in Python – A Step-by-Step Tutorial
Introduction:
NumPy is a powerful library in Python for numerical operations, and it provides support for working with multidimensional arrays. In this tutorial, we'll explore how to create 2D NumPy arrays with detailed explanations and examples.
Prerequisites:
Before we begin, make sure you have Python and NumPy installed on your system. You can install NumPy using the following command:
Creating a 2D NumPy Array:
Let's start by importing the NumPy library:
This will output:
Creating 2D Arrays with Zeros or Ones:
NumPy provides functions to create 2D arrays filled with zeros or ones. For example:
Accessing Elements in a 2D Array:
To access individual elements in a 2D array, you can use indexing. Remember that indexing in Python is zero-based:
Slicing a 2D Array:
You can also use slicing to extract subarrays from a 2D array:
Conclusion:
Creating and working with 2D arrays in NumPy is fundamental for many scientific and data manipulation tasks in Python. In this tutorial, we covered the basics of creating 2D arrays and performing simple operations. As you explore further, you'll discover more advanced features and functionalities that NumPy provides for efficient numerical computing.