Apologies you find this confusing, let me clarify for you.
when I run python -m pdb myscript.py
single step using ‘n’ and import pandas as pd returns immediately (sub 1 second)
Single step the same code in Komodo IDE and it has taken between 4 and 10 seconds to return from the import pandas as pd command. What have noticed that this can get worse with with time.
I have tried the same with a some other, Python only, Community Edition IDE and it is sub second.
For your information, my python environment is Anaconda3 and I running on an imac27 5K with 32gb memory 1TB Fusion drive.
I hope this clarifies the issue for you.
thank you for your support.