Very simple module:
x = 1
y = 2
print(x + y)
Set breakpoint on line 1 (x = 1)
Debug routine by right clicking on routine and selecting "Debug.."
The debugger does not break at line one. Just continues to run.
Again this is about as basic as it gets. Not referencing any other libraries. Using Python 3.6 with Pycharm created virtual environment created from the Python 3.6 install at ...appdata/.... Fairly new Community Edition install.