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Remove Duplicates From a List

Remove Duplicates From a List

What's the fastest way to remove duplicates from a list?

type() vs. isinstance()

type() vs. isinstance()

What's the difference between type() and isinstance() methods, and which one is better for checking the type of an object?

Membership Testing

Membership Testing

Why iterating over the whole list is a bad idea, what data structure is best for membership testing, and when it makes sense to use it?

Checking for True or False

Checking for True or False

How can we compare a variable to True or False, what's the difference between "is" and "==" operators, and what are truthy values?

Sorting Lists

Sorting Lists

What's the fastest way to sort a list? When can you use sort() and when you need to use sorted() instead?

For Loop vs. List Comprehension

For Loop vs. List Comprehension

Simple "for loops" can be replaced with a list comprehension. But is it going to make our code faster? And what limitations list comprehension has?

Ordered Dictionaries

Ordered Dictionaries

Dictionaries in the latest Python versions preserve the insertion order. So, is there any reason to use the OrderedDict as we used to do in the past?

Easy Speedup Wins With Numba

Easy Speedup Wins With Numba

Numba library has plenty of tools to speed up your mathematical-heavy programs. From a simple @jit decorator, all the way to running your code on a CUDA GPU.

Find Item in a List

Find Item in a List

How to quickly find something in a collection of items, like a list or a range? When a generator expression is a great solution, and when it's not?

Ask for Forgiveness or Look Before You Leap?

Ask for Forgiveness or Look Before You Leap?

Is it faster to "ask for forgiveness" or "look before you leap" in Python? And when it's better to use one over the other?

Writing Faster Python - Introduction

Writing Faster Python - Introduction

Introduction to the "Writing Faster Python" series. What it is about, how do I benchmark, frequently asked questions, and additional resources.

Let's Write an IPython Extension the Hard Way

Let's Write an IPython Extension the Hard Way

How a 5-minute hack for %reload function turned into a rabbit hole of different Python tools and techniques.

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