PuDb breakpoint helper for Sublime Text 2

Context.sublime-menu

[
    {
        "command": "add_breakpoint",
        "caption": "Add pudb breakpoint"
    }
]

Default.sublime-commands

[
    {
        "caption": "Breakpoint helper for pudb",
        "command": "add_breakpoint"
    }
]

pudbhelper.py

#!/usr/bin/python
import sublime
import sublime_plugin

from os.path import exists

PUDB_FILE = '/home/snegovik/.config/pudb/saved-breakpoints'

class AddBreakpointCommand (sublime_plugin.TextCommand):
    def run (self, edit):
        filename = self.view.file_name()
        if filename and exists (PUDB_FILE) :
            with open (PUDB_FILE, 'a') as f :
                for selection in self.view.sel () :
                    row, _ = self.view.rowcol (selection.begin ())
                    breakpoint = "b %s:%d\n" % (filename, row+1)
                    f.write (breakpoint)