Pandas column values to columns?

Question

I\'ve seen a few variations on the theme of exploding a column/series into multiple columns of a Pandas dataframe, but I\'ve been trying to do something and not really succe

Answer 1

You could use set_index and unstack

In [1923]: df.set_index([df.index, 'key'])['val'].unstack()
Out[1923]:
key      bar     baz      foo
id
2    bananas  apples  oranges
3      kiwis    None   grapes

Or, a simplified groupby

In [1926]: df.groupby([df.index, 'key'])['val'].first().unstack()
Out[1926]:
key      bar     baz      foo
id
2    bananas  apples  oranges
3      kiwis    None   grapes