old_contents: from __future__ import unicode_literals
  
  import argparse
  import logging
  
  from dvc.command.base import append_doc_link
  from dvc.command.base import CmdBase
  from dvc.exceptions import DvcException
  
  
  logger = logging.getLogger(__name__)
  
  
  class CmdImportUrl(CmdBase):
      def run(self):
          try:
              self.repo.imp_url(
                  self.args.url, out=self.args.out, fname=self.args.file
              )
          except DvcException:
              logger.exception(
                  "failed to import '{}'. You could also try downloading "
                  "it manually, and adding it with `dvc add`.".format(
                      self.args.url
                  )
              )
              return 1
          return 0
  
  
  def add_parser(subparsers, parent_parser):
      IMPORT_HELP = (
          "Download or copy file from URL and take it under DVC control."
      )
  
      import_parser = subparsers.add_parser(
          "import-url",
          parents=[parent_parser],
          description=append_doc_link(IMPORT_HELP, "import-url"),
          help=IMPORT_HELP,
          formatter_class=argparse.RawTextHelpFormatter,
      )
      import_parser.add_argument(
          "url",
          help="Supported urls:\n"
          "/path/to/file\n"
          "/path/to/directory\n"
          "C:\\\\path\\to\\file\n"
          "C:\\\\path\\to\\directory\n"
          "https://example.com/path/to/file\n"
          "s3://bucket/path/to/file\n"
          "s3://bucket/path/to/directory\n"
          "gs://bucket/path/to/file\n"
          "gs://bucket/path/to/directory\n"
          "hdfs://example.com/path/to/file\n"
          "ssh://example.com:/path/to/file\n"
          "ssh://example.com:/path/to/directory\n"
          "remote://myremote/path/to/file (see `dvc remote`)",
      )
      import_parser.add_argument(
          "out", nargs="?", help="Destination path to put files to."
      )
      import_parser.add_argument(
          "-f", "--file", help="Specify name of the DVC-file it generates."
      )
      import_parser.set_defaults(func=CmdImportUrl)
  
new_contents: from __future__ import unicode_literals
  
  import argparse
  import logging
  
  from dvc.command.base import append_doc_link
  from dvc.command.base import CmdBase
  from dvc.exceptions import DvcException
  
  
  logger = logging.getLogger(__name__)
  
  
  class CmdImportUrl(CmdBase):
      def run(self):
          try:
              self.repo.imp_url(
                  self.args.url, out=self.args.out, fname=self.args.file
              )
          except DvcException:
              logger.exception(
                  "failed to import {}. You could also try downloading "
                  "it manually, and adding it with `dvc add`.".format(
                      self.args.url
                  )
              )
              return 1
          return 0
  
  
  def add_parser(subparsers, parent_parser):
      IMPORT_HELP = (
          "Download or copy file from URL and take it under DVC control."
      )
  
      import_parser = subparsers.add_parser(
          "import-url",
          parents=[parent_parser],
          description=append_doc_link(IMPORT_HELP, "import-url"),
          help=IMPORT_HELP,
          formatter_class=argparse.RawTextHelpFormatter,
      )
      import_parser.add_argument(
          "url",
          help="Supported urls:\n"
          "/path/to/file\n"
          "/path/to/directory\n"
          "C:\\\\path\\to\\file\n"
          "C:\\\\path\\to\\directory\n"
          "https://example.com/path/to/file\n"
          "s3://bucket/path/to/file\n"
          "s3://bucket/path/to/directory\n"
          "gs://bucket/path/to/file\n"
          "gs://bucket/path/to/directory\n"
          "hdfs://example.com/path/to/file\n"
          "ssh://example.com:/path/to/file\n"
          "ssh://example.com:/path/to/directory\n"
          "remote://myremote/path/to/file (see `dvc remote`)",
      )
      import_parser.add_argument(
          "out", nargs="?", help="Destination path to put files to."
      )
      import_parser.add_argument(
          "-f", "--file", help="Specify name of the DVC-file it generates."
      )
      import_parser.set_defaults(func=CmdImportUrl)
  
subject: revert ' around exception string