def update(args):
'''
Check for updates for installed packages
'''
if isinstance(args.index_url, ITERABLE_T):
args.index_url = args.index_url[0]
args_manager['install']['packages_url'] = args.index_url + '/simple'
args_manager['install']['index_url'] = args.index_url + '/pypi'
if args.yes:
args_manager['update']['yes'] = True
opts.update_func()
