Have you set a custom Python interpreter in FME, by any chance?

If so, you will likely need to set the PYTHON_HOME environment variable so that FME finds the correct Python installation (32 vs 64 bits).

Some more info on the enviroment variables here: http://www.developerzen.com/2010/09/23/the-complete-guide-to-setting-up-python-development-environment-on-windows/

Hi David,

How do I even do that ? I was under the impression that FME used its own internal Python interpreter. Here's the log file part for my error:

Loaded module 'Python_func' from file 'C:\\Program Files\\FME 2016\\plugins/Python_func.dll'

I don't have a PYTHON_HOME env. variable, but I needed to add a PYTHONPATH, a FME_PYTHON_PATH, and an FME_DEV_HOME to make PyCharm work. The references to FME in these had to be to the 32 bit version before it would work.

The issue is, that these settings are singular, and I'm not sure which are used for what.

I did copy all my transformer files in the 64 bit folder to the similar folder in 32 bit, but something is still amiss.

I'll have a look at the link you sent.

Cheers

Hi again,

I tried adding the FME_PYTHON_PATH (which I disabled above), but it made no difference:

Loaded module 'Python_func' from file 'C:\\Program Files\\FME 2016\\plugins/Python_func.dll'

Cheers

It suddenly occurs to me, that I don't have the 'import StationingCalculator' anywhere in my code. I assume it's some kind of FME wrapper that fails, suggesting some error in my code. I'll be back after checking that.

Hi David,

It was indeed an error (a single missing ":") that was the cause. Hrmpf. I recompiled all my PY files manually, and that revealed the error. Note to self: Do that before freaking out in the future. Wish to Safe: Make a better error message, suggesting a compilation fault as the culprit (as it's FME that initiates the compilation).

I checked whether PyCharm still worked. It does! I had a struggle last week to get it to import the fmeobjects namespace when running programs, now it just works without hiccups, and all my paths currently point to FME 64 bit . Strange! I'll try and reboot my machine to see if it's something cached.

I'm still interested in any "best practice" of having a stable Python development environment, regardless of whether it's inside FME or externally edited and run in PyCharm or something else.

Cheers

Good to hear you found the error.

Have you seen this article? https://knowledge.safe.com/articles/726/use-pycharm-as-fmeobjects-python-ide.html

Yes, I've been using that to setup PyCharm in the first place. The problem is that it doesn't address any 32/64 bit issues and problems.

It was actually this line in the FMX that failed:

DYNAMIC_FUNCTION_CONFIGURATION Python import StationingCalculator