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Tag: duplicates

Pandas – Duplicate Rows and Slice String

I’m trying to create duplicate rows during a dataframe on conditions. For example, I have this Dataframe. And I would like to get the following output: Answer For pandas 0.25+ is possible use DataFrame.explode with splitted values by Series.str.split and for remark column list comprehension with filtering: And we get the following result:

Remove duplicates from a dataframe in PySpark

I’m messing around with dataframes in pyspark 1.4 locally and am having issues getting the dropDuplicates method to work. It keeps returning the error: “AttributeError: ‘list’ object has no attribute ‘dropDuplicates'” Not quite sure why as I seem to be following the syntax in the latest documentation. Answer It is not an import problem. You simply call .dropDuplicates() on a

How do I remove duplicates from a list, while preserving order?

How do I remove duplicates from a list, while preserving order? Using a set to remove duplicates destroys the original order. Is there a built-in or a Pythonic idiom? Related question: In Python, what is the fastest algorithm for removing duplicates from a list so that all elements are unique while preserving order? Answer Here you have some alternatives: http://www.peterbe.com/plog/uniqifiers-benchmark

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