Sublime Text Insert Numbers

.sublime-keymap

[
    { "keys": ["ctrl+alt+n"], "command": "prompt_insert_nums" }
]

InsertNums.py

import sublime, sublime_plugin
import random

class PromptInsertNumsCommand(sublime_plugin.WindowCommand):

    def run(self):
        self.window.show_input_panel('Enter a starting number, step, random.', '1 1 N', self.on_done, None, None)
        pass

    def on_done(self, text):
        try:
            (current, step, dorand) = map(str, text.split(" "))
            if self.window.active_view():
                self.window.active_view().run_command("insert_nums", {"current" : current, "step" : step, "dorand" : dorand} )
        except ValueError:
            pass

class InsertNumsCommand(sublime_plugin.TextCommand):

    def run(self, edit, current, step, dorand):
        current = int(current)
        start = int(current)
        for region in self.view.sel():
            sublime.status_message("Inserting #" + str(current))
            self.view.replace(edit, region, str(current))
            if dorand == "Y":
                current = random.randint(start, int(step))
            else:
                current = current + int(step)