Doing more with Python Numpy

Name: Doing more with Python Numpy
Rating: 4.4 (17 reviews)

Tap full potential of Numpy Library by putting Arrays, Numpy's functions and Broadcasting to work

(17 ratings)

101 students

Created by Gaurav Singh

Last updated 12/2022

English

What you'll learn

Develop understanding of how Arrays work and what advantages they offer over other Data Structures
Use Arrays as Data containers for common data operations
Compare time performance of your process codes versus a suitable Numpy function
In-depth understanding to use numpy's where() and select() functions to replace conventionally used methods
Apply Array Broadcasting in your line of work to replace Nested For loops and Cross-join operations

Requirements

Basic knowledge of Python (including Data Types and Structures, Control Flow, Functions, etc.)
Basic knowledge of Pandas

Description

The course covers three key areas in Numpy:

Numpy Arrays as Data Structures - Developing an in-depth understanding along the lines of:
1. Intuition of Arrays as Data Containers
2. Visualizing 2D/3D and higher dimensional Arrays
3. Array Indexing and Slicing - 2D/3D Arrays
4. Performing basic/advanced operations using Numpy Arrays
Useful Numpy Functions - Basic to Advanced usage of the below Numpy functions and how they perform compared to their counterpart methods
1. numpy where() function
  1. Comparison with Apply + Lambda
  2. Performance on Large DataFrames
  3. Varied uses in new variable creation
2. numpy select() function
  1. Apply conditions on single and multiple numeric variables
  2. Apply conditions on categorical variable
Array Broadcasting - Developing an intuition of "How Arrays with dissimilar shapes interact" and how to put it to use
1. Intuition of Broadcasting concept on 2D/3D Arrays
2. Under what scenarios can we use Broadcasting to replace some of the computationally expensive methods like For loops and Cross-join Operations, etc. especially when working on a large Datasets

The course also covers the topic - "How to time your codes/processes", which will equip you to:

Track time taken by any code block (using Two different methods) and also apply to your own processes/codes
Prepare for the upcoming Chapter "Useful Numpy Functions", where we not only compare performance of Numpy functions with other conventionally used methods but also monitor how they perform on large Datasets

Who this course is for:

Anyone who wants to learn in more depth, about Numpy Arrays and Array Broadcasting and put them to practical use

Gaurav Singh

Data Science Professional - BFSI and Life Sciences

4.4 Instructor Rating
89 Reviews
2,918 Students
3 Courses

Data Science Professional with 17 Years of Industry Experience in BFSI and Life Sciences. Currently engaged full-time as Online/Corporate Trainer.

My motivation is to create "Application oriented training content that learners can intuitively understand and also apply to their day-to-day work to solve a real-world problem". There is no dearth of training content today, be it Udemy or elsewhere, and i totally understand that. Thus I am working in the direction to create and share more useful and relatable content which has a high degree of practical applicability and not just mere Theoretical existence.