prompt: We are currently solving the following issue within our repository. Here is the issue text:
  --- BEGIN ISSUE ---
  alias `list` as `ls`?
  I have been reaching for `dvc ls` out of habit instead of `dvc list`. Should we introduce an alias for `dvc list`?
  
  --- END ISSUE ---
  
  Below are some code segments, each from a relevant file. One or more of these files may contain bugs.
  --- BEGIN FILES ---
  Path: `dvc/command/ls/__init__.py`
  Content:
  ```
  1 import argparse
  2 import logging
  3 
  4 from dvc.command import completion
  5 from dvc.command.base import CmdBaseNoRepo, append_doc_link
  6 from dvc.command.ls.ls_colors import LsColors
  7 from dvc.exceptions import DvcException
  8 from dvc.ui import ui
  9 
  10 logger = logging.getLogger(__name__)
  11 
  12 
  13 def _prettify(entries, with_color=False):
  14     if with_color:
  15         ls_colors = LsColors()
  16         fmt = ls_colors.format
  17     else:
  18 
  19         def fmt(entry):
  20             return entry["path"]
  21 
  22     return [fmt(entry) for entry in entries]
  23 
  24 
  25 class CmdList(CmdBaseNoRepo):
  26     def run(self):
  27         from dvc.repo import Repo
  28 
  29         try:
  30             entries = Repo.ls(
  31                 self.args.url,
  32                 self.args.path,
  33                 rev=self.args.rev,
  34                 recursive=self.args.recursive,
  35                 dvc_only=self.args.dvc_only,
  36             )
  37             if self.args.show_json:
  38                 import json
  39 
  40                 ui.write(json.dumps(entries))
  41             elif entries:
  42                 entries = _prettify(entries, with_color=True)
  43                 ui.write("\n".join(entries))
  44             return 0
  45         except DvcException:
  46             logger.exception(f"failed to list '{self.args.url}'")
  47             return 1
  48 
  49 
  50 def add_parser(subparsers, parent_parser):
  51     LIST_HELP = (
  52         "List repository contents, including files"
  53         " and directories tracked by DVC and by Git."
  54     )
  55     list_parser = subparsers.add_parser(
  56         "list",
  57         parents=[parent_parser],
  58         description=append_doc_link(LIST_HELP, "list"),
  59         help=LIST_HELP,
  60         formatter_class=argparse.RawTextHelpFormatter,
  61     )
  62     list_parser.add_argument("url", help="Location of DVC repository to list")
  63     list_parser.add_argument(
  64         "-R",
  65         "--recursive",
  66         action="store_true",
  67         help="Recursively list files.",
  68     )
  69     list_parser.add_argument(
  70         "--dvc-only", action="store_true", help="Show only DVC outputs."
  71     )
  72     list_parser.add_argument(
  73         "--show-json", action="store_true", help="Show output in JSON format."
  74     )
  75     list_parser.add_argument(
  76         "--rev",
  77         nargs="?",
  78         help="Git revision (e.g. SHA, branch, tag)",
  79         metavar="<commit>",
  80     )
  81     list_parser.add_argument(
  82         "path",
  83         nargs="?",
  84         help="Path to directory within the repository to list outputs for",
  85     ).complete = completion.DIR
  86     list_parser.set_defaults(func=CmdList)
  87
  ```
  --- END FILES ---
  
  Please first localize the bug based on the issue statement, and then generate a patch according to the `git diff` format fenced by three backticks.
  
  Here is an example:
  
  ```diff
  diff --git a/examples/server_async.py b/examples/server_async.py
  --- a/examples/server_async.py
  +++ b/examples/server_async.py
  @@ -313,4 +313,4 @@
   
   
   if __name__ == "__main__":
  -    asyncio.run(run_async_server("."), debug=True)
  +    asyncio.run(run_async_server(), debug=True)
  diff --git a/examples/server_sync.py b/examples/server_sync.py
  --- a/examples/server_sync.py
  +++ b/examples/server_sync.py
  @@ -313,5 +313,5 @@
   
   
   if __name__ == "__main__":
  -    server = run_sync_server(".")
  +    server = run_sync_server()
       server.shutdown()
  
  ```
  
golden_diff: diff --git a/dvc/command/ls/__init__.py b/dvc/command/ls/__init__.py
  --- a/dvc/command/ls/__init__.py
  +++ b/dvc/command/ls/__init__.py
  @@ -54,6 +54,7 @@
       )
       list_parser = subparsers.add_parser(
           "list",
  +        aliases=["ls"],
           parents=[parent_parser],
           description=append_doc_link(LIST_HELP, "list"),
           help=LIST_HELP,
  
verification_info: {"golden_diff": "diff --git a/dvc/command/ls/__init__.py b/dvc/command/ls/__init__.py\n--- a/dvc/command/ls/__init__.py\n+++ b/dvc/command/ls/__init__.py\n@@ -54,6 +54,7 @@\n     )\n     list_parser = subparsers.add_parser(\n         \"list\",\n+        aliases=[\"ls\"],\n         parents=[parent_parser],\n         description=append_doc_link(LIST_HELP, \"list\"),\n         help=LIST_HELP,\n", "issue": "alias `list` as `ls`?\nI have been reaching for `dvc ls` out of habit instead of `dvc list`. Should we introduce an alias for `dvc list`?\n", "before_files": [{"content": "import argparse\nimport logging\n\nfrom dvc.command import completion\nfrom dvc.command.base import CmdBaseNoRepo, append_doc_link\nfrom dvc.command.ls.ls_colors import LsColors\nfrom dvc.exceptions import DvcException\nfrom dvc.ui import ui\n\nlogger = logging.getLogger(__name__)\n\n\ndef _prettify(entries, with_color=False):\n    if with_color:\n        ls_colors = LsColors()\n        fmt = ls_colors.format\n    else:\n\n        def fmt(entry):\n            return entry[\"path\"]\n\n    return [fmt(entry) for entry in entries]\n\n\nclass CmdList(CmdBaseNoRepo):\n    def run(self):\n        from dvc.repo import Repo\n\n        try:\n            entries = Repo.ls(\n                self.args.url,\n                self.args.path,\n                rev=self.args.rev,\n                recursive=self.args.recursive,\n                dvc_only=self.args.dvc_only,\n            )\n            if self.args.show_json:\n                import json\n\n                ui.write(json.dumps(entries))\n            elif entries:\n                entries = _prettify(entries, with_color=True)\n                ui.write(\"\\n\".join(entries))\n            return 0\n        except DvcException:\n            logger.exception(f\"failed to list '{self.args.url}'\")\n            return 1\n\n\ndef add_parser(subparsers, parent_parser):\n    LIST_HELP = (\n        \"List repository contents, including files\"\n        \" and directories tracked by DVC and by Git.\"\n    )\n    list_parser = subparsers.add_parser(\n        \"list\",\n        parents=[parent_parser],\n        description=append_doc_link(LIST_HELP, \"list\"),\n        help=LIST_HELP,\n        formatter_class=argparse.RawTextHelpFormatter,\n    )\n    list_parser.add_argument(\"url\", help=\"Location of DVC repository to list\")\n    list_parser.add_argument(\n        \"-R\",\n        \"--recursive\",\n        action=\"store_true\",\n        help=\"Recursively list files.\",\n    )\n    list_parser.add_argument(\n        \"--dvc-only\", action=\"store_true\", help=\"Show only DVC outputs.\"\n    )\n    list_parser.add_argument(\n        \"--show-json\", action=\"store_true\", help=\"Show output in JSON format.\"\n    )\n    list_parser.add_argument(\n        \"--rev\",\n        nargs=\"?\",\n        help=\"Git revision (e.g. SHA, branch, tag)\",\n        metavar=\"<commit>\",\n    )\n    list_parser.add_argument(\n        \"path\",\n        nargs=\"?\",\n        help=\"Path to directory within the repository to list outputs for\",\n    ).complete = completion.DIR\n    list_parser.set_defaults(func=CmdList)\n", "path": "dvc/command/ls/__init__.py"}], "after_files": [{"content": "import argparse\nimport logging\n\nfrom dvc.command import completion\nfrom dvc.command.base import CmdBaseNoRepo, append_doc_link\nfrom dvc.command.ls.ls_colors import LsColors\nfrom dvc.exceptions import DvcException\nfrom dvc.ui import ui\n\nlogger = logging.getLogger(__name__)\n\n\ndef _prettify(entries, with_color=False):\n    if with_color:\n        ls_colors = LsColors()\n        fmt = ls_colors.format\n    else:\n\n        def fmt(entry):\n            return entry[\"path\"]\n\n    return [fmt(entry) for entry in entries]\n\n\nclass CmdList(CmdBaseNoRepo):\n    def run(self):\n        from dvc.repo import Repo\n\n        try:\n            entries = Repo.ls(\n                self.args.url,\n                self.args.path,\n                rev=self.args.rev,\n                recursive=self.args.recursive,\n                dvc_only=self.args.dvc_only,\n            )\n            if self.args.show_json:\n                import json\n\n                ui.write(json.dumps(entries))\n            elif entries:\n                entries = _prettify(entries, with_color=True)\n                ui.write(\"\\n\".join(entries))\n            return 0\n        except DvcException:\n            logger.exception(f\"failed to list '{self.args.url}'\")\n            return 1\n\n\ndef add_parser(subparsers, parent_parser):\n    LIST_HELP = (\n        \"List repository contents, including files\"\n        \" and directories tracked by DVC and by Git.\"\n    )\n    list_parser = subparsers.add_parser(\n        \"list\",\n        aliases=[\"ls\"],\n        parents=[parent_parser],\n        description=append_doc_link(LIST_HELP, \"list\"),\n        help=LIST_HELP,\n        formatter_class=argparse.RawTextHelpFormatter,\n    )\n    list_parser.add_argument(\"url\", help=\"Location of DVC repository to list\")\n    list_parser.add_argument(\n        \"-R\",\n        \"--recursive\",\n        action=\"store_true\",\n        help=\"Recursively list files.\",\n    )\n    list_parser.add_argument(\n        \"--dvc-only\", action=\"store_true\", help=\"Show only DVC outputs.\"\n    )\n    list_parser.add_argument(\n        \"--show-json\", action=\"store_true\", help=\"Show output in JSON format.\"\n    )\n    list_parser.add_argument(\n        \"--rev\",\n        nargs=\"?\",\n        help=\"Git revision (e.g. SHA, branch, tag)\",\n        metavar=\"<commit>\",\n    )\n    list_parser.add_argument(\n        \"path\",\n        nargs=\"?\",\n        help=\"Path to directory within the repository to list outputs for\",\n    ).complete = completion.DIR\n    list_parser.set_defaults(func=CmdList)\n", "path": "dvc/command/ls/__init__.py"}]}