Sulo | Dynamic instrumentation tool for Adobe Flash Player

The python executable cannot find the module.

I suggest these steps:

1) involuntary override

Check you have not saved any of your files with the filename nbt.py

2) Which is the interpreter? Where does it load the modules from?

Add this lines to your script:

import sys

print(sys.executable)

print(sys.path)

The ouput is

• the python interpreter location
• the directories where it is looking for to load the modules

If the module is installed, you can search it on the filesystem. For example for linux

find / -name nbt.py

Its location shall be one of those listed before.

3) lookup in specific directories

You can suggest to Python to look for modules in other directories, adding the directories to this environment variable:

PYTHONPATH

See the Python docs, section 1.2 environmemt variables

https://docs.python.org/3/using/cmdline.html