Import Error: cannot import name 'GenericStorage'

[s77411]

Tried to use one of the both plotting example. Installed Oemof Version is 0.3.2 and oemof visio version is 0.0.1 on a windwos 10 computer. When executing both examples (oemof-examples/oemof_examples/oemof.solph/v0.3.x/plotting_examples/) storage_investment_plot.py and variable_chp_plot.py the error code: Import Error: cannot import name 'GenericStorage' gets returned. Fixed the bug by adding in the ...\oemof_visio\energy_system_graph.py in line 28 .components.
Old:
from oemof.solph import GenericStorage
New (Fixed):
from oemof.solph.components import GenericStorage

[sharief091]

I tried the same for the plots and got the same error.
but as you mentioned: Fixed the bug by adding in the ...\oemof_visio\energy_system_graph.py in line 28 .components.
The lib is still old and not fixed.
Could you help me out, please

[s77411]

Hey,
you just have to add in the code ...\oemof_visio\energy_system_graph.py in line 28: from oemof.solph import GenericStorage
to: from oemof.solph.components import GenericStorage and then it should work.

[sharief091]

Hi,
I have tried but I could not able to edit site-packages.
is there a way to add in the code ?

[s77411]

I did it in the anaconda environment and looked for the right path to edit the energy_system_graph.py and had no issues there. How are you using oemof? I don´t know if there is also a possibility to implement it in your code.

[sharief091]

I am using winpython environment. i have imported oemof_visio from github and am unable to do any changes.
i think, it has to be edited in github. which i pulled a request.

try:
from oemof.solph import GenericStorage
except ModuleNotFoundError:
GenericStorage = None

[p-snft]

I guess, that's a problem with different versions of solph:

• from oemof.solph import GenericStorage works in solph v0.4 but not in v0.3 and (upcoming) v0.5
• from oemof.solph.components import GenericStorage works in all of these versions.

Thanks for oemof/oemof-visio#8: As visio does not require a specific version, it should work with all of them.

PS: Is there a reason to use oemof v0.3 instead of oemof.solph v0.4?