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Title: Python List Comprehension with Multiple Variables: A Comprehensive Tutorial
Introduction:
List comprehensions are a concise and powerful feature in Python that allow you to create lists using a single line of code. When dealing with multiple variables, list comprehensions can be especially handy for creating compact and readable code. In this tutorial, we will explore the syntax and usage of Python list comprehensions with multiple variables, accompanied by examples to illustrate their effectiveness.
The basic syntax for a list comprehension with multiple variables is as follows:
Let's consider a scenario where you want to generate the Cartesian product of two lists:
Output:
In this example, each combination of elements from list1 and list2 is represented as a tuple in the cartesian_product list.
You can use a condition to filter elements based on a specific criterion. Consider the following example where we create a list of squares for even numbers:
Output:
Here, the list comprehension includes only the squares of even numbers.
List comprehensions with multiple variables are also useful when working with the zip function to combine elements from different lists:
Output: