Python 3 build system for Sublime Text 3

README.md

Python 3 Build System

This always kills the previous run. Useful when using matplotlib so you don't end up with a large number of windows.

BuildPython3.py

import Default.exec

ExistingCommandMap = { }

class build_python3(Default.exec.ExecCommand):
    def run(self, cmd=None, kill=False, **kwargs):
        file = cmd

        if file in ExistingCommandMap:
            existing = ExistingCommandMap[file]
            ExistingCommandMap[file] = None

            try:
                existing.run(kill=True)
            except:
                pass

        if kill:
            super().run(kill=True, **kwargs)
        else:
            ExistingCommandMap[file] = self
            super().run(cmd=[ "python3", "-B", "-u", file ], **kwargs)

Python 3.sublime-build

{
    "target": "build_python3",
    "cmd": "$file",
    "cancel": { "kill": "true" },
    "file_regex": "^[ ]File \"(...?)\", line ([0-9]*)",
    "selector": "source.python"
}