From the crash report, it appears you are using a Python 2.7.12 and Tcl/Tk 8.6 installed from Homebrew. The crash appears to be happening as a result of the Open Apple Event from the Finder to Tk. At first glance, I'm not able to reproduce the crash using a python.org 2.7.12 with an ActiveState Tcl/Tk 8.5.18 also on macOS 10.12.1. I don't have a Homebrew installation handy to test with and I don't really have time right now to dig into it but I think it very unlikely to be an issue with Python itself. You might want to open a Homebrew issue and/or a Tk issue.