Re: [gentoo-user] Problems with numpy and python 3x

[Franz Fellner]

It can't have been "just an update" because python-3.7 is your default
python, so you have selected it after the update.
Alternatively: Your numpy doesn't work for a longer time and you just
didn't realize until now.

numpy was built for python-3.6 and not for python3.7. Which is perfectly
fine as it is gentoos default -
base/make.defaults:PYTHON_TARGETS="python2_7 python3_6".
So why did you install python-3.7 and set it as default although your
system isn't prepared for it?

Am So., 15. Dez. 2019 um 08:07 Uhr schrieb <tuxic@××××××.de>:

> Hi,
>
> after the update this morning, "numpy" wasn't found anumore by python.
>
> Asking python, it gave me:
> Python 3.7.5 (default, Dec 15 2019, 05:23:14)
> [GCC 9.2.0] on linux
> Type "help", "copyright", "credits" or "license" for more information.
> >>> import numpy
> Traceback (most recent call last):
>   File "<stdin>", line 1, in <module>
> ModuleNotFoundError: No module named 'numpy'
> >>>
>
> eix numpy gave me:
>
>
> [U] dev-python/numpy
>      Available versions:  1.14.5^t (~)1.15.4^t (~)1.16.1^t (~)1.16.5^t
> (~)1.17.4^t {doc lapack test PYTHON_TARGETS="python2_7 python3_5 python3_6
> python3_7 python3_8"}
>      Installed versions:  1.16.5^t(06:31:45 AM 12/15/2019)(lapack -doc
> -test PYTHON_TARGETS="python2_7 python3_6 -python3_5 -python3_7")
>      Homepage:            https://www.numpy.org
>      Description:         Fast array and numerical python library
>
>
> emergeing it with
>
> emerge --selective=n dev-python/numpy
>
> results in the same output of eix.
>
> Interestingly a post on stackexchange related to the problem of "numpy
> not found" states (source:
> https://stackoverflow.com/questions/7818811/import-error-no-module-named-numpy_
> )
>
> "Support for Python 3 was added in NumPy version 1.5.0, so to begin with,
> you must download/install a newer version of NumPy."
>
> and links to this address:
> https://sourceforge.net/projects/numpy/files//NumPy/1.5.0/NOTES.txt/view
> which states the same.
>
> A version of numpy >= 1.5 is not offered by portage repo it seems, but
> python 3.x is.
>
> pip3 says, everything is fine, numpy is installed:
>
> pip3 install --user numpy
> Requirement already satisfied: numpy in /usr/lib64/python3.6/site-packages
> (1.16.5)
>
> But this does not fit the installed python version according to the
> linked sources above.
>
> How can I solve this problem?
>
> (I am on "unstable"...)
>
> Cheers!
> mcc
>
>
>
>