Learn some Python tools and tricks to avoid common mistakes.

Pythonic Style of Programming: Tips and Tricks

When you run code in Python, there’s a lot happening under the hood. This module sheds light on some of the lesser-known parts of Python.

As you progress through it, you’ll learn some tools and tricks that every Python programmer should know to avoid common mistakes. You can think of this module as a “Python hacks” handbook.

Python basics are a prerequisite, but this is a beginner-level course. Each lesson is independent and after the first chapter, you can pick up from any lesson, and you’ll be able to follow along comfortably.

Python FTW: Under the Hood

According to our latest stats, $9/10$ Python programmers predict this output wrong. Let's see if you are "the one".

<h1> Explanation </h1>

* According to the [Python language reference](https://docs.python.org/2/reference/simple_stmts.html#assignment-statements), assignment statements have the form:
  ```
  (target_list "=")+ (expression_list | yield_expression)
  ```
  Therefore, the documentation says:
 
> An assignment statement evaluates the expression list (remember that this can be a single expression or a comma-separated list, the latter yielding a tuple) and assigns the single resulting object to each of the target lists, from left to right.

* The `+` in `(target_list "=")+` means there can be **one or more** target lists. In this case, target lists are `a, b` and `a[b]` (note that the expression list is exactly one, which in our case is `{}, 5`).



# Explanation

* According to the [Python language reference](https://docs.python.org/2/reference/simple_stmts.html#assignment-statements), assignment statements have the form:
  ```
  (target_list "=")+ (expression_list | yield_expression)
  ```
  Therefore, the documentation says:
 
> An assignment statement evaluates the expression list (remember that this can be a single expression or a comma-separated list, the latter yielding a tuple) and assigns the single resulting object to each of the target lists, from left to right.

* The `+` in `(target_list "=")+` means there can be **one or more** target lists. In this case, target lists are `a, b` and `a[b]` (note that the expression list is exactly one, which in our case is `{}, 5`).



Introduction

Slippery Slopes

Strain Your Brain!

Appearances Are Deceptive!

The Hidden Treasures!

Miscellaneous

Conclusion

Let's See If You Can Guess This?