Python List

How to Check if Items in a Python List Are Also in Another

There comes a time in all our coding lives when we need to compare lists to understand whether items in one list appear in a second list. In this article we’ll start where we all started, using for-loops, before moving to a more classic Python list comprehension. We’ll then move beyond that to use Python …

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How to Convert a String List to an Integer List in Python

The most Pythonic way to convert a list of strings to a list of ints is to use the list comprehension [int(x) for x in strings]. It iterates over all elements in the list and converts each list element x to an integer value using the int(x) built-in function. This article shows you the simplest …

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How to Convert a String List to a Float List in Python

The most Pythonic way to convert a list of strings to a list of floats is to use the list comprehension floats = [float(x) for x in strings]. It iterates over all elements in the list and converts each list element x to a float value using the float(x) built-in function. This article shows you …

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How to Convert an Integer List to a Float List in Python

The most Pythonic way to convert a list of integers ints to a list of floats is to use the list comprehension expression floats = [float(x) for x in ints]. It iterates over all elements in the list ints using list comprehension and converts each list element x to a float value using the float(x) …

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How to Convert a Float List to a String List in Python

The most Pythonic way to convert a list of floats fs to a list of strings is to use the one-liner fs = [str(x) for x in fs]. It iterates over all elements in the list fs using list comprehension and converts each list element x to a string value using the str(x) constructor. This …

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How to Convert an Integer List to a String List in Python

The most Pythonic way to convert a list of integers ints to a list of strings is to use the one-liner strings = [str(x) for x in ints]. It iterates over all elements in the list ints using list comprehension and converts each list element x to a string value using the str(x) constructor. This …

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How to Find the Longest String in a Python List?

Use Python’s built-in max() function with a key argument to find the longest string in a list. Call max(lst, key=len) to return the longest string in lst using the built-in len() function to associate the weight of each string—the longest string will be the maximum. Problem Formulation Given a Python list of strings. Find the …

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A Simple Introduction to Set Comprehension in Python

Being hated by newbies, experienced Python coders can’t live without this awesome Python feature. In this article, I give you everything you need to know about set comprehensions using the bracket notation {}. What is Set Comprehension? Set comprehension is a concise way of creating sets in Python using the curly braces notation {expression for …

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