Is the index of pd.concat([march, april]) unique

pandas · from Stacking tables with concat

pd.concatignore_indexaxis=1join=keys=index.is_unique

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Exercise 2

Is the index of pd.concat([march, april]) unique? Return the boolean.

your answer
stuck? the lesson behind it
Stacking tables with concat
No keys, no matching — and two traps that come free with alignment.