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danielecook/unnest.py

Last active December 11, 2019 23:43
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unnest pandas df
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unnest.py
# https://benjcunningham.org/blog/unnest-list-columns-in-pandas.html
import pandas as pd
def unnest(df, col):
unnested = (df.apply(lambda x: pd.Series(x[col]), axis=1)
.stack()
.reset_index(level=1, drop=True))
unnested.name = col
return df.drop(col, axis=1).join(unnested)
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