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jpp has asked 43 questions and find answers to 857 problems.

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jpp questions

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
Comparing numpy array with itself by element efficiently
Suppress key addition in collections.defaultdict
How to efficiently partial argsort Pandas dataframe across columns

jpp answers

Sort pandas df column by a custom list of values
Adding a row at the bottom of a DataFrame for a grand total
Efficiently update values in a pandas dataframe with mixed dtype columns
Appending to a dataframe cell with pandas?
pandas pivot dataframe with multiple groupby
Remove duplicates from array and elements in matching positions in another array
How to merge all the elements of a list
Negating a slice in Numpy?
How to select dataframe columns with lists and ranges combined
Find the largest number in column