# Copyright 2013 Donald Stufft
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from __future__ import absolute_import, division, print_function
from __future__ import unicode_literals

import argparse
import pkg_resources

import twine


def _registered_commands(group='twine.registered_commands'):
    return list(pkg_resources.iter_entry_points(group=group))


def dispatch(argv):
    registered_commands = _registered_commands()
    parser = argparse.ArgumentParser(prog="twine")
    parser.add_argument(
        "--version",
        action="version",
        version="%(prog)s version {0}".format(twine.__version__),
    )
    parser.add_argument(
        "command",
        choices=[c.name for c in registered_commands],
    )
    parser.add_argument(
        "args",
        help=argparse.SUPPRESS,
        nargs=argparse.REMAINDER,
    )

    args = parser.parse_args(argv)

    command = args.command
    for registered_command in registered_commands:
        if registered_command.name == command:
            break
    else:
        print("{0} is not a valid command.".format(command))
        raise SystemExit(True)

    main = registered_command.load()

    main(args.args)

@@ -710,16 +710,48 @@
 ources%0A%0A
+import requests%0Aimport pkginfo%0A%0A
 import t
@@ -755,16 +755,16 @@
 t twine%0A
-
 %0A%0Adef _r
@@ -882,16 +882,273 @@
 oup))%0A%0A%0A
+def dep_versions():%0A    return 'pkginfo: %7B0%7D, requests: %7B1%7D'.format(%0A        pkginfo.Installed(pkginfo).version,%0A        # __version__ is always defined but requests does not always have%0A        # PKG-INFO to read from%0A        requests.__version__,%0A    )%0A%0A%0A
 def disp
@@ -1368,16 +1368,22 @@
 sion %7B0%7D
+ (%7B1%7D)
 %22.format
@@ -1400,16 +1400,84 @@
 ersion__
+,%0A                                                    dep_versions()
 ),%0A    )

Print dependency versions with twine --version