How do I use pandas dataframes to select the first column as array?

Question

I would like to collect the values of the first column of a pandas dataframe into an array. How can I accomplish this?

So far I have tried this:

first_column_values = df.iloc[:,[0]]

But it is not the result I wish to have.

Paul H · Accepted Answer · 2016-04-19 20:21:19Z

2

You're close. It should be:

first_column_values = df.iloc[:, 0].values

answered Apr 19, 2016 at 20:21

Paul H

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1 Comment

Thanks! and on an unrelated note, you have a cool title, "water resources engineer".