1import os 2import sys 3from pythonbrew.basecommand import Command 4from pythonbrew.define import PATH_PYTHONS 5from pythonbrew.util import Package, set_current_path, is_installed 6from pythonbrew.log import logger 7 8class SwitchCommand(Command): 9 name = "switch" 10 usage = "%prog VERSION" 11 summary = "Permanently use the specified python as default" 12 13 def run_command(self, options, args): 14 if not args: 15 self.parser.print_help() 16 sys.exit(1) 17 18 pkg = Package(args[0]) 19 pkgname = pkg.name 20 if not is_installed(pkgname): 21 logger.error("`%s` is not installed." % pkgname) 22 sys.exit(1) 23 pkgbin = os.path.join(PATH_PYTHONS,pkgname,'bin') 24 pkglib = os.path.join(PATH_PYTHONS,pkgname,'lib') 25 26 set_current_path(pkgbin, pkglib) 27 28 logger.info("Switched to %s" % pkgname) 29 30SwitchCommand() 31