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

Does anyone have a sealant? My loop variables are leaking out. 

<h3>1.</h3>

Can you predict the output of this code?

for x in range(7):
    if x == 6:
        print(x, ': for x inside loop')
print(x, ': x in global')

But `x` was never defined outside the scope of `for` loop...

<h3>2.</h3>

This time, let's initialize `x` first.

x = -1
for x in range(7):
    if x == 6:
        print(x, ': for x inside loop')
print(x, ': x in global')

<h3>3. </h3> 

Let's try something new now. 
 
> ⚠️ The following code is meant for **Python 2.x** versions.

Does anyone have a sealant? My loop variables are leaking out. 

# 1.

Can you predict the output of this code?

But `x` was never defined outside the scope of `for` loop...

# 2.

This time, let's initialize `x` first.

# 3. 

Let's try something new now. 
 
> ⚠️ The following code is meant for **Python 2.x** versions.

Introduction

Slippery Slopes

Strain Your Brain!

Appearances Are Deceptive!

The Hidden Treasures!

Miscellaneous

Conclusion

Loop Variables Leaking Out!

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