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Discover a simple way to compare a user-inputted duration against movie durations in a nested list using Python, and find the closest match.
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How to Find the Closest Movie Duration in a Nested List with Python

When working with data in Python, particularly nested lists or dictionaries, it's common to need to extract information based on user input. A frequent question among Python users is: How do I find a value that is closest to a given number within a nested list? In this guide, we will explore how to solve this problem step-by-step, using an example of a movie database stored in a list of dictionaries.

Understanding the Problem

Imagine you have a list of movies, where each movie is represented by a dictionary containing details like the title, year of release, genre, and duration in minutes. Here’s a sample structure:

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The task is to ask the user for a movie duration (in minutes) and provide the movie from the list whose duration is closest to the input.

Step-by-Step Solution

Now, let's break this down into clear sections to understand how to implement this functionality.

1. Gather User Input

First, we will need to prompt the user for the duration they wish to compare with. We will convert this input into an integer for further calculations.

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2. Extract Durations from the List

Next, we will create a list containing only the duration values from our lista_peliculas. This makes it easier to find the closest match.

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3. Find the Closest Duration

In this step, we apply a method to determine which duration in duration_lst is closest to the user-inputted duration. We'll use Python's min() function along with a lambda function to achieve this.

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4. Retrieve and Display the Movie Information

Now that we have the closest duration, we will loop through the original list of movies to find and print the full details of the movie that matches this closest duration.

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Complete Code Example

Putting it all together, your complete Python code will look as follows:

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Testing the Code

When you run the above code and input a duration, for example, 115, the output will be:

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Conclusion

In this guide, we successfully figured out how to search for a movie with a duration closest to a specified value in a nested list using Python. This method can be incredibly helpful when dealing with similar data structures in your own programming endeavors. Happy coding!