1#!/usr/bin/env python3 2"""Miscellaneous diagnostics for the import system""" 3 4import sys 5import argparse 6from pprint import pprint 7 8def _dump_state(args): 9 print(sys.version) 10 for name in args.attributes: 11 print("sys.{}:".format(name)) 12 pprint(getattr(sys, name)) 13 14def _add_dump_args(cmd): 15 cmd.add_argument("attributes", metavar="ATTR", nargs="+", 16 help="sys module attribute to display") 17 18COMMANDS = ( 19 ("dump", "Dump import state", _dump_state, _add_dump_args), 20) 21 22def _make_parser(): 23 parser = argparse.ArgumentParser() 24 sub = parser.add_subparsers(title="Commands") 25 for name, description, implementation, add_args in COMMANDS: 26 cmd = sub.add_parser(name, help=description) 27 cmd.set_defaults(command=implementation) 28 add_args(cmd) 29 return parser 30 31def main(args): 32 parser = _make_parser() 33 args = parser.parse_args(args) 34 return args.command(args) 35 36if __name__ == "__main__": 37 sys.exit(main(sys.argv[1:])) 38