How to add a new column to an existing DataFrame?
How to add a new column to an existing DataFrame? Question: I have the following indexed DataFrame with named columns and rows not- continuous numbers: a b c d 2 0.671399 0.101208 -0.181532 0.241273 3 0.446172 -0.243316 0.051767 1.577318 5 0.614758 0.075793 -0.451460 -0.012493 I would like to add a new column, ‘e’, to the …
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