[SciPy-User] How to read row_name, col_name, value format TSV into a sparse matrix?

[Thomas Kluyver]

On Wed, 29 Jan 2020 at 09:34, Peng Yu <pengyu.ut at gmail.com> wrote:

> Where it documented that pandas.read_csv don't generate the whole
> matrix? The return value is either of the two?
>

It returns a 2D data structure as in the rows and columns of your CSV file
- so the shape will be (3, n_entries). It doesn't try to interpret them as
referring to entries in a matrix - you have to do that as a separate step.

It's probably not exactly documented like this, because documentation
doesn't usually say what a function *doesn't* do, unless it's a very common
confusion.

Thomas
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