sudo pip3 install oemof, import oemof not working

[eosram]

Tried to install oemof with "sudo pip3 install oemof". Everything seems to work fine, no errors, but import oemof in python got me a "no module named oemof" error. Downloading the zipped package and installing with "pip3 -e /path" worked fine, import oemof also. Do I have to adjust some environment variables when installing otherwise?

[eosram]

The command was actually "sudo pip3 install oemof_base", forgot the underscore base. Importing the module in python still failed.

[uvchik]

This is confusing. Maybe we should change this.

The name of the package on github or pypi is oemof_base but is installed as oemof. Have a look at the storage_invest example. There you can see how imports work.

from oemof.core import energy_system as es

Try the example but change line 147 if you do not have Gurobi installed.

For testing purpose you could install the glpk solver: https://www.gnu.org/software/glpk/

solver='glpk'

Does the example works for you?

[eosram]

The import of oemof in python worked fine when installing with 'sudo pip3 install -e /path/oemof_base-dev' (downloaded from github), also storage_invest.py runs without problems (thanks for the hint to use the 'glpk' solver). Just the import of oemof in python after installing it with 'sudo pip3 install oemof-base' as stated in the docs resulted in the missing module error.

[uvchik]

As it works for you it is not urgent, right?

• What happens if you import oemof_base?
• What is the output of pip3 list (not whole list, but the oemof specific part)?

@ulfmueller Do you had the same problems lately? (#38)
@gnn Do you have an idea?

[ulfmueller]

yes I had the exact same problem and I performed the same work around as @S3PP ....

[eosram]

No, its not urgent, I was just wondering!
retrieved with pypi:

pip3 list | grep oemof
oemof-base (0.0.2.1)

...import oemof or import oemof_base in python fails.

[uvchik]

Thank you for the report @S3PP, we will try to fix it.

[uvchik]

I found out that import oemof_base.oemof works.

@gnn : Don't you think it is the same problem we had when we used the src folder?

I opened a new issue (#45) to discuss the renaming of the folder to avoid such errors.

[nesnoj]

same problem here when using 'sudo pip3 install oemof-base', gonna use workaround too.
BTW: When listing '/usr/local/lib/python3.4/dist-packages/' there's only the egg-dir of oemof, no package dir named 'oemof' nor 'oemof_base'

[gnn]

The problem is different to the one that occured when we where using src as the source folder.
I was able to reproduce the current issue though when trying to install from a local source distribution generated via python setup.py sdist.
Commit 4a371d7 fixed it for me
@uvchik: Could you check whether it also works locally for you? If so we could upload a 0.0.2.2 version (now that we have a fourth version number anyway) and see whether that fixes things for everybody else too.

Edit: What I did technically fixes the issue, but sub-packages where still not importable. Commit 4290533 should complete the fix.

[uvchik]

I tested it, uploaded the version 0.0.2.2 and tested the uploaded version. Works now. Thank you 😄