Run itzi with Python version to 2.7

Jairo Arturo Torres M.

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Jan 17, 2020, 5:20:33 AM1/17/20

to Itzï

Dear all,

I am having troubles to run a Itzï model because my GRASS GIS 7.8.2. installation uses Python 3.6.9. The error message is this:

Starting simulation of lisbon_rain20181021_tr2year_100m_1hour_2018_parameters.ini...

WARNING: Error during execution: Traceback (most recent call last):
File "/usr/local/lib/python3.6/dist-packages/itzi/itzi.py", line 210, in sim_runner_worker
    sim_runner.run()
File "/usr/local/lib/python3.6/dist-packages/itzi/itzi.py", line 80, in run
    gis.check_output_files(self.conf.output_map_names.itervalues())
AttributeError: 'dict' object has no attribute 'itervalues'

Simulations complete. Elapsed times:
lisbon_rain20181021_tr2year_100m_1hour_2018_parameters.ini: 0:00:00
Total: 0:00:00
Average: 0:00:00

As far as I understood Itzï requires python 2.7.17 or at least I can run successfully my model with Python 2.7.17.
Did somebody face and solve this same issue?

Kind regards,

Arturo

Behzad Jamali

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Jan 17, 2020, 5:57:02 AM1/17/20

to Jairo Arturo Torres M., Itzï

I’m not sure but I think grass is not supported by python 3 yet.

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Laurent C.

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Jan 20, 2020, 11:09:08 AM1/20/20

to Behzad Jamali, Jairo Arturo Torres M., Itzï

Hi Jairo,

Itzï was written at a time when GRASS was not supporting Python 3. Therefore, Itzï supports only Python 2.7.

The error you see is a typical Python 2 to 3 porting issue. Changing itervalues() to values() should solve this particular problem, but you will likely run into other similar issues.

Porting Itzï to Python 3 should not be very complex. Unfortunately I do not have to time to work on it now.

Help is welcome to port Itzï to Python 3. I would be more than happy to review a Pull Request on that matter.

In the mean time, the solution is to stick to Python 2.7.

Best regards,

Laurent

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