How to Program in Python 3

If you are new to Python programming, try this lesson and learn where to find the software, and review how to download and install Python on your system!

Now that you have Python 3 installed, try this lesson and learn how to work with strings, how to join strings together, and how to use the print function.

Sometimes, mathematics and computer programming languages come together. In this lesson, learn how to perform basic math problems in Python 3.

Variables can be—well, variable. In this Python 3 programming language lesson, get an introduction to using and unpacking variables as placeholders.

While you’re learning how to use Python 3, you should use the while loop! Learn how to perform operations under set conditions with the while loop.

For every program you write, you should know about the for loop! In this Python 3 tutorial, learn how to use the for loop for tasks with variable time frames.

If you want to learn about if statements in Python 3, then you’re in the right place. Learn how to put certain conditions on variables with this coding tool.

If you’re interested in adding another layer of logic to your if statement, this is the lesson for you. Otherwise, check out Sentdex’s other Python 3 tutorials!

In this Python 3 lesson, add yet another layer of logic to the existing if else statement. Learn how to code and when to use the if elif else statement.

Functions, parameters, definitions--what do these terms have to do with coding in Python 3? Learn the basics of functions in this computer programming language.

After learning the basics of coding functions in Python 3, it’s time to give functions more, well, functionality. Add parameters to functions in this lesson.

What are default function parameters and why are they used when coding in Python 3? In this computer programming lesson, learn about parameter defaults.

The terms global and local correspond to a variable’s reach within a script or program. Learn the basics of local and global variables in this Python 3 lesson.

Often times, the task you want to program has already been programmed by someone else! Learn about installing modules for Python 3 in this lesson.

Have you received an “invalid syntax” notice while coding in Python 3? Chances are it’s a human error. Learn how to debug in this computer programming lesson!

There are two methods of saving Python 3 data to a file. In this lesson, learn how to write the data to a file, which is used for unique, one-time situations.

In this coding in Python 3 lesson, discover the second method of saving data: appending a file. Teacher Sentdex demonstrates how in a few minutes.

This two-in-one Python 3 coding lesson covers the basics of reading from a Python 3 file, then explains how to read and understand classes when coding.