Introduction

• Numpy, short for numerical python.
• It is a fundamental package for scientific computing in python.
• It provides powerful capabilities to work with numerical data efficiently and is widely used in data analysis, machine learning, and scientific research.

Need of Numpy

• Python performs basic mathematical operations. But in data science, machine learning, deep learning and artificial intelligence require complex mathematical operations like:
  • Creation of arrays.
  • Perform several operations on those arrays.
  • Integral calculus operations.
  • Differential equations.
  • Statistics related operations.
• These type of operations are perform using numpy.
• Numpy is the backbone of remaining libraries like pandas, matplotlib, sklearn …etc.

History

• It is the fundamental python library to perform complex numerical operations.
• It is developed on top of numeric library in 2005.
• It is developed by travis oliphant and multiples contributors.
• It is freeware and open source library.
• It is written in C and python. Most of numpy is written in C, So performance-wise numpy is the best.
• Because of high speed, numpy is best choice for ML algorithms than traditional python’s in-built data structures like list.

Features of Numpy

• Superfast because most of numpy is written in C language.
• Numpy array are basic data structure in numpy.
• It is the backbone for remaining libraries like pandas, scikit-learn etc.
• Numpy has vectorization feature which improves performance while iterating elements.

Application Areas of Numpy

• To perform linear algebra functions.
• To perform linear regression.
• To preform logistic regression.
• In deep neural networks.
• K-means clustering.
• Control systems.
• Operational research.

Installing numpy module

• To install latest version.

pip install numpy

• To install particular version of numpy.

pip install numpy==1.20.0

Note

When we install anaconda python. Then there is no need to install numpy explicitly. Numpy module is implicitly installed along with anaconda python.

Question

• Write python code to check install version of numpy.

# Check the version of Numpy installed
import numpy as np
print(np.__version__)

Output

1.20.1

Ungraded Questions

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