jpp

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jpp has asked 48 questions and find answers to 1050 problems.

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jpp questions

Improving performance on comparison algorithm np.packbits(A==A[:, None], axis=1)
Accessing methods via getattr
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

jpp answers

Count positive values in column pandas
Function like dict.get but returns value of default key instead of default value?
From CSV, group similar data together?
How do I print a list of lists where the inner lists contain both strings and lists of strings?
Updating one dataframe with the most recent data from a separate dataframe
List of tuples calculate min-max date difference from tuples
How do I compare a date column with a date and add a text column?
Python Pandas - Check if a value is in the top n rows
How to extract data from text field in pandas dataframe?
How to change a list of list to a dictionary of dictionary?