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jpp has asked 43 questions and find answers to 833 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 dataframe on string date without conversion [duplicate]
Create a pandas dataframe from dictionary whilst maintaining order of columns
Split list indexes into new lists python
Create new column with value from matches from two other columns in pandas
Filter rows with minimum values groupwise in Pandas dataframe [duplicate]
populate a pandas column with the id from the min value of another pandas DF
How can I return the number of stock sold and bought without defaultdict?
How to combine one Pandas dataframe column with a date and another with a time?
How to get index for all the duplicates in a dataframe (pandas - python)
Pandas -- Map values from one column to another column