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IndexingRelated to indexing on series/frames, not to indexes themselvesRelated to indexing on series/frames, not to indexes themselvesRegressionFunctionality that used to work in a prior pandas versionFunctionality that used to work in a prior pandas version
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According to documentation, using loc
should work with Boolean arrays. However, the following does not seem to work:
import pandas as pd
n = 17
data = pd.DataFrame({
"name": n * ["a"],
"x": range(n),
"y": range(n)
})
copy = data.copy()
idx = n * [True]
data.loc[idx, ["x", "y"]] = data[["x", "y"]]
assert data.equals(copy) # Raises assertion error
The weird thing is that if n is smaller then the code works. This has been tested on Pandas 1.5.0
nicoa
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IndexingRelated to indexing on series/frames, not to indexes themselvesRelated to indexing on series/frames, not to indexes themselvesRegressionFunctionality that used to work in a prior pandas versionFunctionality that used to work in a prior pandas version