问题:

I am trying to debug a scrapy project , built in Python 2.7.1 in visual studio 2013. I am able to reach breakpoints, but when I do step into/ step over the debugger seems to continue the exceution as if I did resume (F5). I am working with standard python launcher. Any idea how to make the step into/over functionality work?

回答1:

You need to enable Tools -> Options -> Python Tools -> Debugging -> Enable debugging of the Python standard library. https://github.com/Microsoft/PTVS/issues/106

回答2:

workaround rather than full answer.

I encountered this problem while importing my own module which ran code (which was erroring) on import.

By setting the imported module to the startup script, I was able to step through the startup code in the module and debug.

My best guess is that visual studio 2015 decided the imported module was a python standard library, but it really isn't viable to turn on the 'debug standard library option' as many standard library modules generate errors on import themselves.