It would be great if FME could either use a better IDE for the Python Caller and startup/shutdown scripts or allow testing in an external IDE such as PyScripter. Right now there is no debugging capability and if you want to test your values you have to say something like:
print "value is",value
Then look for it in the log file. An internal line by line step through debugger would be useful, or to use an external editor that has a line by line step through debugger, enable PyScripter to understand:
import fme
import fmeobjects
Released
Better IDE for Python
+8- Safer
You can now script Python using your preferred IDE in FME 2025.2! This is a big step forward, but we’re always looking to keep improving the Python authoring experience to make it smoother and more powerful.
As you try out the new integration, keep the feedback, questions, and ideas coming.
If you have new feature requests around Python authoring, please post them as separate ideas for future consideration.