PERF: performance improvement in MultiIndex.sortlevel by behzadnouri · Pull Request #9445 · pandas-dev/pandas (original) (raw)

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i gave an example from python's documentation that this is an actual use-case for boolean operations:

This is sometimes useful, e.g., if s is a string that should be replaced by a default value if it is empty, the expression s or 'foo' yields the desired value.

this is right off from python's documentation, and i have seen it used a lot.

that said, if you like to change it, please do.