python - Pandas force matrix multiplication -

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i force matrix multiplication "orientation" using python pandas, both between dataframes against dataframes, dataframes against series , series against series.

as example, tried following code:

t = pandas.series([1, 2]) print(t.t.dot(t))

which outputs: 5

but expect this:

[1 2  2 4]

pandas great, inability matrix multiplications way want frustrating, appreciated.

ps: know pandas tries implicitly use index find right way compute matrix product, seems behavior can't switched off!

here:

in [1]: import pandas  in [2]: t = pandas.series([1, 2])  in [3]: np.outer(t, t) out[3]: array([[1, 2],        [2, 4]])

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