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learner questions

How to make syntactically correct names
How to get one hot encoded vector as in the table below
How to find weighted sum on top of groupby in pyspark dataframe?
pandas how to perform comparison on column
opencv - plot contours in an image
How to get back the index after groupby in pandas
Selecting a subset of functions from a list of functions in python
reorder columns based on values in a particular row.
ggplot: text printed by geom_text is not clear
IOError: [Errno 24] Too many open files:

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How to get one hot encoded vector as in the table below