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This article mainly introduces "the method and steps of filtering the unique values in the list in python". In the daily operation, I believe that many people have doubts about the methods and steps of filtering the unique values in the list in python. The editor consulted all kinds of materials and sorted out simple and easy-to-use methods of operation. I hope it will be helpful to answer the doubts of "the method and steps of filtering the only values in the list in python". Next, please follow the editor to study!

1. Use the collections.Counter function to count the list, and filter out the non-unique values through the list deduction, and filter out the values whose count is greater than 1.

2. Counter is a subclass of dict and is used to count hashable objects. Is a collection where elements are stored like dictionary keys and counts are stored as values.

The count can be any integer value, including 0 and negative. It can take an iterable object and count its elements.

Example

From collections import Counter def filter_unique (lst): return [item for item, count in Counter (lst). Items () if count > 1] # EXAMPLESfilter_unique ([1, 2, 2, 3, 4, 4, 5]) # [2, 4] so far, the study on "the method step of filtering the unique values in the list in python" is over, hoping to solve everyone's doubts. The collocation of theory and practice can better help you learn, go and try it! If you want to continue to learn more related knowledge, please continue to follow the website, the editor will continue to work hard to bring you more practical articles!

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