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• Python NumPy Tutorial for Beginners: Learn with Examples

## What is NumPy in Python?

NumPy is an open source library available in Python, which helps in mathematical, scientific, engineering, and data science programming. It is a very useful library to perform mathematical and statistical operations in Python. It works perfectly for multi-dimensional arrays and matrix multiplication. It is easy to integrate with C/C++ and Fortran.

For any scientific project, NumPy is the tool to know. It has been built to work with the N-dimensional array, linear algebra, random number, Fourier transform, etc.

NumPy is a programming language that deals with multi-dimensional arrays and matrices. On top of the arrays and matrices, NumPy supports a large number of mathematical operations. In this part, we will review the essential functions that you need to know for the tutorial on ‘TensorFlow.’

## Why use NumPy?

NumPy is memory efficiency, meaning it can handle the vast amount of data more accessible than any other library. Besides, NumPy is very convenient to work with, especially for matrix multiplication and reshaping. On top of that, NumPy is fast. In fact, TensorFlow and Scikit learn to use NumPy array to compute the matrix multiplication in the back end.

In this Python NumPy Tutorial, we will learn:

## How to Install NumPy

To install NumPy library, please refer our tutorial How to install TensorFlow. NumPy is installed by default with Anaconda.

In remote case, NumPy not installed-

You can install NumPy using Anaconda:

`conda install -c anaconda numpy`
• In Jupyter Notebook :
```import sys
!conda install --yes --prefix {sys.prefix} numpy```

### Import NumPy and Check Version

The command to import numpy is

`import numpy as np`

Above code renames the Numpy namespace to np. This permits us to prefix Numpy function, methods, and attributes with ” np ” instead of typing ” numpy.” It is the standard shortcut you will find in the numpy literature

To check your installed version of Numpy use the command

`print (np.__version__)`

Output:

`1.18.0`

## What is Python NumPy Array?

NumPy arrays are a bit like Python lists, but still very much different at the same time. For those of you who are new to the topic, let’s clarify what it exactly is and what it’s good for.

As the name kind of gives away, a NumPy array is a central data structure of the numpy library. The library’s name is actually short for “Numeric Python” or “Numerical Python”.

## Creating a NumPy Array

Simplest way to create an array in Numpy is to use Python List

`myPythonList = [1,9,8,3]`

To convert python list to a numpy array by using the object np.array.

numpy_array_from_list = np.array(myPythonList)

To display the contents of the list

numpy_array_from_list

Output:

`array([1, 9, 8, 3])`
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What is Natural Language Processing? Natural Language Processing (NLP) is a branch of AI that helps computers to understand, interpret and manipulate human languages like English or Hindi to analyze and derive it’s meaning. NLP helps developers to organize and structure knowledge to perform tasks like translation, summarization, named entity…
• Artificial Intelligence Tutorial: What is AI? Basics for Beginners
This AI tutorial for beginners is designed for learning the basics of Artificial Intelligence. In this Artificial Intelligence for beginners tutorial, you will learn various Artificial Intelligence basics like what is AI, history of AI, types of AI, applications of AI, and more concepts about AI. What is AI? AI…
• TensorFlow Tutorial for Beginners: Learn Basics with Example
TensorFlow Tutorial Summary This TensorFlow tutorial for beginners covers TensorFlow basics to advance topics like linear regression, classifier, create, train and evaluate a neural network like CNN, RNN, auto encoders etc with TensorFlow examples. Refer this Machine Learning TensorFlow tutorial, sequentially, one after the other, for maximum efficacy to learn…
• R Tutorial for Beginners: Learn R Programming Language
Why Learn R? R is a programming language is widely used by data scientists and major corporations like Google, Airbnb, Facebook etc. for data analysis. This is a complete course on R for beginners and covers basics to advance topics like machine learning algorithm, linear regression, time series, statistical inference…
• Data Science Tutorial for Beginners: What is, Basics & Process
What is Data Science? Data Science is the area of study which involves extracting insights from vast amounts of data by the use of various scientific methods, algorithms, and processes. It helps you to discover hidden patterns from the raw data. The term Data Science has emerged because of the…