Pandas
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Applying a function to multiple columns in groupsCalculating percentiles of a DataFrameCalculating the percentage of each value in each groupComputing descriptive statistics of each groupDifference between a group's count and sizeDifference between methods apply and transform for groupbyGetting cumulative sum of each groupGetting descriptive statistics of DataFrameGetting multiple aggregates of a column after groupingGetting n rows with smallest column value in each groupGetting number of distinct rows in each groupGetting size of each groupGetting specific group after groupbyGetting the first row of each groupGetting the last row of each groupGetting the top n rows with largest column value in each groupGetting unique values of each groupGrouping by multiple columnsGrouping without turning group column into indexMerging rows within a group togetherNaming columns after aggregationSorting values within groups
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Getting specific group after groupby in Pandas
schedule Aug 12, 2023
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Tags Python●Pandas
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To get a specific group after calling groupby(~), use the get_group(~) method, which returns a DataFrame.
Example
Consider the following DataFrame:
df = pd.DataFrame({"price":[200,300,700,900], "brand":["apple", "google", "apple", "google"], "device":["phone","phone","computer","phone"]})df
price brand device0 200 apple phone1 300 google phone2 700 apple computer3 900 google phone
To get the group "apple" as a DataFrame:
df.groupby("brand").get_group("apple")
price brand device0 200 apple phone2 700 apple computer
Published by Isshin Inada
Edited by 0 others
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