On 21 March 2013 14:28, Laurent Gautier <[email protected]> wrote:
> In Python this is an error.
> >>> x+3
> Traceback (most recent call last):
> File "<stdin>", line 1, in <module>
> TypeError: can only concatenate list (not "int") to list
>
With a list, yes. With a numpy array, which is probably as relevant for
many rpy2 users, adding an integer adds it to every element:
In [4]: x + 1
Out[4]: array([1, 2, 3])
Thomas
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