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Learn the popular and powerful Python programming language

Learn Enough Python Application Development 01
Learn Enough Python to Be Dangerous teaches you to write practical and modern programs in Python, one of the most popular programming languages in the world. Learn the Python interpreter, shell scripting, testing and test-driven development, package creation, beginning web development, and Python tools for data science. Read full post
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ebooks
474 pages
screencasts
8 hours
course
11 chapters
 
100 videos
 
103 exercises

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Your programming journey starts

With the Python Tutorial


Tutorial 01 in the
Application Development Series

With the foundations laid by the previous Learn Enough tutorials, you’re now ready to learn how to develop larger software systems, including dynamic web applications. You’ll start by learning either Python or Ruby (or both), using them for general-purpose programming and to make a simple web application. With Python, you’ll also learn key Python tools for the fast-growing field of data science. Learning Ruby, meanwhile, leads naturally into the Ruby on Rails Tutorial, the leading introduction to web development with Rails. In a final optional tutorial, you’ll learn how to use Action Cable to make real-time web apps that respond instantly to user input. By the time you finish these courses, you'll be ready to start work as a freelancer, get a job as a developer, or start a web-based company of your own.

A powerful choice

A versatile and elegant language

Python is a popular and powerful programming language with applications ranging from shell scripting to web development to data science. Learn Enough Python to Be Dangerous is designed to get you started writing practical and modern Python programs as fast as possible, with a focus on the real tools used every day by software developers.

Learn Enough Python to Be Dangerous broadly follows the structure of Learn Enough JavaScript to Be Dangerous and Learn Enough Ruby to Be Dangerous, both of which which can be studied either before or after this tutorial. Because many of the examples are the same, the tutorials reinforce each other nicely—there are few things more instructive in computer programming than seeing the same basic problems solved in two different languages.

To be productive with Python, you don’t have to know everything about it—you just have to learn enough to be dangerous.

Python basics

The palpable power of Python

Learn Enough Python to Be Dangerous gets off to a quick start by deploying a simple but real dynamic site to the live Web. You’ll also learn how to use Python to write a simple shell script and to execute Python interactively using a Read-Eval-Print loop (REPL). En route, you’ll discover that you already own the best interactive system for learning Python—a computer!

Common data structures

How to manage and handle data

Next, you’ll take a tour of common data structures in Python, including Strings, Lists, and other native objects like Dictionaries and Regular Expressions. These structures form the essential building blocks for longer programs.

Functions, objects, and classes

Perform actions in an efficient way

You’ll then learn about functions, objects, and classes. This section of the tutorial includes the rarely taught but elegant and hugely valuable set of techniques called functional programming, including a powerful Python feature known as comprehensions. You’ll also learn about the important practice of test-driven development en route to writing and publishing a simple Python package.

Shell scripting and Flask web development

Put the power of Python into action

The next two chapters Learn Enough Python to Be Dangerous cover full-strength shell scripting and introduce Flask, a simple and easy-to-learn web framework. You’ll then Flask to make and deploy a working web application. The result is a well-rounded command of Python that is especially good preparation for learning professional-grade web development.

Data science

Learn key tools for this fast-growing field

The final chapter of Learn Enough Python to Be Dangerous covers key Python tools for data science, a fast-growing field that combines tools from computation and statistics to create insights and draw conclusions from data. You’ll learn the basics of numerical computations with NumPy, data visualization with Matplotlib, data analysis with pandas, and machine learning with scikit-learn.

Is all of this…

Sounding good?

Happy people

saying nice things!

Jimmy Wales Founder, Wikipedia

Q: What is Jimmy Wales' favorite book?

A: It changes often. At the moment, it’s Ruby on Rails Tutorial by Michael Hartl. :)


Quora link
About the Learn Enough Courses

I must say, this Learn Enough series is a masterpiece of education. Thank you for this incredible work!

— Michael K.

I must say, this Learn Enough series is a masterpiece of education. Thank you for this incredible work!

— Michael K.
<blockquote class="twitter-tweet" data-lang="en"><p lang="en" dir="ltr">I have nothing but fantastic things to say about <a href="https://twitter.com/LearnEnough?ref_src=twsrc%5Etfw">@LearnEnough</a> courses. I am just about finished with the <a href="https://twitter.com/hashtag/javascript?src=hash&amp;ref_src=twsrc%5Etfw">#javascript</a> course. I must say, the videos are mandatory because <a href="https://twitter.com/mhartl?ref_src=twsrc%5Etfw">@mhartl</a> will play the novice, and share in the joy of having something you wrote actually work! 🤓</p>&mdash; claudia marie (@StarvingHearts) <a href="https://twitter.com/StarvingHearts/status/1134234858157355008?ref_src=twsrc%5Etfw">May 30, 2019</a></blockquote>

I want to thank you for the amazing job you have done with the tutorials. They are likely the best tutorials I have ever read.

— Pedro I.

I have been trying to learn web development and programming on and off for the past 3 years and your website is the first one that I feel does the job right.

— Janelle S.

Just bought the new ebook and want to say keep up the great work!! The Learn Enough to Be Dangerous series re-ignited my desire to code after 10+ years of “meh”.

— Diane Y.

The Learn Enough Society and the courses are incredible. It’s the best value in the market of online courses in my opinion. Like you say, it’s learning to tech, which is very useful in our world.

— Sébastien D.

I just meant to tell you: your tutorial books from the Learn Enough series are awesome! The books are well-written, clear, concise, super-useful, and even fun to read. Thank you so, so much for this! I have bought the first three and will buy whatever you publish next. Keep up doing this very good work and thanks again.

— Pierre W.

Have been following the whole “Learn Enough to Be Dangerous” series and am VERY impressed with it. I am a project manager who works with software developers daily. These sessions have provided me with a huge amount very useful information, to the extent that I now not only understand what the dev guys are talking about, but am starting to use the tools (command line, Git, etc.) that they use.

— Brian
Amazon link

Michael Hartl is one of the best educators around when it comes to web development. I have been following him for a long time, and everything he produces is top quality. If you are looking for a quick way to become a thorough and productive professional web developer, Hartl’s books are a great place to start.

— Abram Bailey
Amazon link
<blockquote class="twitter-tweet" data-conversation="none" data-lang="en"><p lang="en" dir="ltr">Also - if you are working through <a href="https://twitter.com/RailsTutorial?ref_src=twsrc%5Etfw">@RailsTutorial</a> you will probably check out <a href="https://twitter.com/LearnEnough?ref_src=twsrc%5Etfw">@LearnEnough</a> quite soon, which is an incredible resource for people starting out. Same high quality as the rails tutorial, while still digestible for people starting out.</p>&mdash; Michael Wallbaum (@mwallba) <a href="https://twitter.com/mwallba/status/988590924203679744?ref_src=twsrc%5Etfw">April 24, 2018</a></blockquote>

Hi, my name is Philip, and I’m a beginning learner of web development. I’ve dabbled in small ways in Ruby/Rails for about a year and a half. Occasionally, I write ruby scripts to solve problems at my job. I also dabble in learning: JavaScript, Ember, more Ruby/Rails, brief intro readings into Scala.

I’ve tried Codeschool, Codecademy, and I’ll stop there, so you don’t spend the next 3 hours reading all the different learning resources I’ve tried.

Ruby on Rails Tutorial (Rails 5) is undoubtedly, the most effective and educational resource I’ve ever come across when it comes to learning anything about web development or writing any code on any level.

Here’s what you seem to understand that everyone else just gets wrong: There’s a big spectrum between the very beginner basics: declaring variables, to voodoo, magical, incantational trickery of witchcraft, like building your own web server.

Almost all tutorials make this mistake. The first couple “lessons” are good for people who don’t even have a clue what computer programming is and then suddenly, there’s a big jump to what seem to be concepts that only seasoned developers have mastered.

Thanks for such a great, educational guide in Ruby on Rails.

— Philip

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About the Author
Michael-hartl

Michael Hartl

Michael Hartl is the creator of the Ruby on Rails Tutorial, one of the leading introductions to web development, and is cofounder and principal author at Learn Enough. Previously, he was a physics instructor at the California Institute of Technology (Caltech), where he received a Lifetime Achievement Award for Excellence in Teaching. He is a graduate of Harvard College, has a Ph.D. in Physics from Caltech, and is an alumnus of the Y Combinator entrepreneur program.

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