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swifter_parallel_pandas_apply_quickstart.py

python

Demonstrates how to use swifter to efficiently parallelize a pandas apply functi

15d ago10 linesjmlovelace/swifter
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swifter_parallel_pandas_apply_quickstart.py
1import pandas as pd
2import swifter
3
4def filter_function(x):
5    return x**2
6
7df = pd.DataFrame({'x': [1, 2, 3, 4, 5], 'y': [6, 7, 8, 9, 10]})
8
9# runs the function on the 'x' column of the dataframe in parallel
10df['x2'] = df['x'].swifter.apply(filter_function)