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Commit 0bdcf5d

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"""
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2891. Method Chaining
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Solved
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Easy
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Companies
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DataFrame animals
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+-------------+--------+
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| Column Name | Type |
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+-------------+--------+
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| name | object |
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| species | object |
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| age | int |
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| weight | int |
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+-------------+--------+
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Write a solution to list the names of animals that weigh strictly more than 100 kilograms.
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Return the animals sorted by weight in descending order.
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The result format is in the following example.
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Example 1:
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Input:
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DataFrame animals:
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+----------+---------+-----+--------+
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| name | species | age | weight |
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+----------+---------+-----+--------+
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| Tatiana | Snake | 98 | 464 |
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| Khaled | Giraffe | 50 | 41 |
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| Alex | Leopard | 6 | 328 |
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| Jonathan | Monkey | 45 | 463 |
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| Stefan | Bear | 100 | 50 |
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| Tommy | Panda | 26 | 349 |
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+----------+---------+-----+--------+
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Output:
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+----------+
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| name |
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+----------+
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| Tatiana |
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| Jonathan |
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| Tommy |
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| Alex |
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+----------+
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Explanation:
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All animals weighing more than 100 should be included in the results table.
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Tatiana's weight is 464, Jonathan's weight is 463, Tommy's weight is 349, and Alex's weight is 328.
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The results should be sorted in descending order of weight.
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In Pandas, method chaining enables us to perform operations on a DataFrame without breaking up each operation into a separate line or creating multiple temporary variables.
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Can you complete this task in just one line of code using method chaining?"
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"""
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import pandas as pd
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def findHeavyAnimals(animals: pd.DataFrame) -> pd.DataFrame:
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filtered_animals = animals[animals['weight'] > 100].sort_values('weight', ascending = False)
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return filtered_animals[['name']]

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