old_contents: # 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
  #
  # https://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.
  import argparse
  from typing import Dict
  from typing import List
  from typing import Tuple
  
  import pkg_resources
  import pkginfo
  import requests
  import requests_toolbelt
  import setuptools
  import tqdm
  
  import twine
  from twine import _installed
  
  
  def _registered_commands(
      group: str = "twine.registered_commands",
  ) -> Dict[str, pkg_resources.EntryPoint]:
      registered_commands = pkg_resources.iter_entry_points(group=group)
      return {c.name: c for c in registered_commands}
  
  
  def list_dependencies_and_versions() -> List[Tuple[str, str]]:
      return [
          ("pkginfo", _installed.Installed(pkginfo).version),
          ("requests", requests.__version__),
          ("setuptools", setuptools.__version__),
          ("requests-toolbelt", requests_toolbelt.__version__),
          ("tqdm", tqdm.__version__),
      ]
  
  
  def dep_versions() -> str:
      return ", ".join(
          "{}: {}".format(*dependency) for dependency in list_dependencies_and_versions()
      )
  
  
  def dispatch(argv: List[str]) -> bool:
      registered_commands = _registered_commands()
      parser = argparse.ArgumentParser(prog="twine")
      parser.add_argument(
          "--version",
          action="version",
          version="%(prog)s version {} ({})".format(twine.__version__, dep_versions(),),
      )
      parser.add_argument(
          "command", choices=registered_commands.keys(),
      )
      parser.add_argument(
          "args", help=argparse.SUPPRESS, nargs=argparse.REMAINDER,
      )
  
      args = parser.parse_args(argv)
  
      main = registered_commands[args.command].load()
  
      return bool(main(args.args))
  
new_contents: # 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
  #
  # https://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.
  import argparse
  from typing import Dict
  from typing import List
  from typing import Tuple
  
  import pkg_resources
  import pkginfo
  import requests
  import requests_toolbelt
  import setuptools
  import tqdm
  
  import twine
  from twine import _installed
  
  
  def _registered_commands(
      group: str = "twine.registered_commands",
  ) -> Dict[str, pkg_resources.EntryPoint]:
      registered_commands = pkg_resources.iter_entry_points(group=group)
      return {c.name: c for c in registered_commands}
  
  
  def list_dependencies_and_versions() -> List[Tuple[str, str]]:
      return [
          ("pkginfo", _installed.Installed(pkginfo).version),
          ("requests", requests.__version__),
          ("setuptools", setuptools.__version__),
          ("requests-toolbelt", requests_toolbelt.__version__),
          ("tqdm", tqdm.__version__),
      ]
  
  
  def dep_versions() -> str:
      return ", ".join(
          "{}: {}".format(*dependency) for dependency in list_dependencies_and_versions()
      )
  
  
  def dispatch(argv: List[str]) -> bool:
      registered_commands = _registered_commands()
      parser = argparse.ArgumentParser(prog="twine")
      parser.add_argument(
          "--version",
          action="version",
          version="%(prog)s version {} ({})".format(twine.__version__, dep_versions(),),
      )
      parser.add_argument(
          "command", choices=registered_commands.keys(),
      )
      parser.add_argument(
          "args", help=argparse.SUPPRESS, nargs=argparse.REMAINDER,
      )
  
      args = parser.parse_args(argv)
  
      main = registered_commands[args.command].load()
  
      # Normalizing return type for simplicity
      # register() and upload() returns None, check() returns bool
      return bool(main(args.args))
  
subject: Add comment to main() return