jpp

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jpp has asked 46 questions and find answers to 917 problems.

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jpp questions

Pandas dataframe to structured array with Boolean series
Dot-multiplying large dense matrices of different dtype (float x boolean)
Accessing category codes for Index objects in Pandas
Tracking progress in python list(map(...))
Pandas vectorised function cumsum versus numpy
Optimal HDF5 dataset chunk shape for reading rows
Select Rows with Same Id but different Values in Pandas
NumPy indexing: broadcasting with Boolean arrays
Dask dataframes: reading multiple files & storing filename in column
Efficiently return the index of the first value satisfying condition in array

jpp answers

Pandas dataframe to structured array with Boolean series
How to use a function attribute as python object as well as string
groupby to return nth group - NOT row
Simple way to select elements of a list that intersect with another list? (python)
Creating a new column by finding exact word in a column of strings
Select rows for which values are same in select columns Pandas?
Check if value is present in respective list
Create list with all unique possible combination based on condition in dataframe in Python
Trying to understand Python maps
Creating a dataframe from multiple lists with list names as column names