AttributeError: 'EnergySystem' object has no attribute 'signals'

[baumconsult]

I just installed oemof v0.3.1 via Anaconda Promt and tried running basic_example.py. I modified only line 68 to filename = 'basic_example.csv' and stored this file in the same directory as the code. I get the error message shown in the headline. Here the screenshot from spyder:

[jakob-wo]

Hi Michael,

I tried to reproduce what you did but I do not get an error mesage when running basic_example.py (oemof.solph\v0.3.x\basic_example) with oemof v0.3.1 and Python 3.7.3. It actually works fine.

However, I do not understand what was modified in your code. Line 68 in basic_example.py is the import of matplotlib, as far as I see. Did you try to run the example without any modifications?

[oakca]

Hello Michael,

Can you maybe send your csv file, so that I can also check if it runs?

Additionally I also ran the basic_example.py and it works as @jakob-wo said.

[baumconsult]

Hi Jakob, sorry, I changed code in line 87: #filename = os.path.join(os.path.dirname(__file__), 'basic_example.csv') filename = 'basic_example.csv' When running without that modification, the csv-file is not found. The error message received after the modification is the following: [cid:image001.jpg@01D52202.B93FC1E0] I am using Python 3.7.0. Might that cause the problem? Kind regards, Michael

[baumconsult]

Yes, see attached.

[oakca]

Hello Michael,

from

sorry, I changed code in line 87:

I understand that you just changed this line filename = os.path.join(os.path.dirname(__file__), 'basic_example.csv') to filename = 'basic_example.csv', so basically you are still using the same csv file. I did the same change, and it is still solving.

By the way I am using python 3.6.7 and it is still working. So I don't think it is because of the version of python.

[baumconsult]

I get the attached error message. The same happens when running other simple files which worked under v0.2.3.

[uvchik]

Why do you think it has to do with the csv-file. The error message comes from the new blinker.signals introduced in v0.3. What blinker version do you have installed? Did you install oemof 0.3.1 or did you update from v0.2.x?

[baumconsult]

I have up-dated oemof in Anaconda Promt with "pip install oemof --upgrade" from v0.2.3 to v0.3.1

[baumconsult]

By the way, basic_example.py runs now. I did not make any change except adapting:

nominal_capacity to nominal_storage_capacity
initial_capacity to initial_storage_level
capacity_loss to loss_rate

[p-snft]

To check whether these changes are made, we released v0.3.1. If this really the reason for the fail, I would suggest to close this issue but to open a new one: The error message should be more speaking.

[jakob-wo]

I think there is no need for another Issue because this might belong to https://github.com/oemof/oemof/issues/514 (Error handling oemof app development).