We are currently solving the following issue within our repository. Here is the issue text:
--- BEGIN ISSUE ---
Logging error when checking for new version of pip.
### Description

When pip (22.1.2) checked for a new version it failed with an error. It's coming from the following function:

https://github.com/pypa/pip/blob/c4606b3572529625762f0586dda134302cf6122c/src/pip/_internal/utils/entrypoints.py#L46-L62

The problem call is to `os.path.samefile` on line 58, where it compares the output of `shutil.which('pip')` to `<sys.prefix>/bin/pip` (in my case `/usr/bin/pip`). However, on my system, `pip` is installed to the user site-packages directory (so the binary is at `/home/domdf/.local/bin/pip`).

The solution is to check whether the file exists before calling `samefile`.

I have Python 3.7 and 3.9 installed to `/usr` alongside the system's Python 3.8, and the error is present with all three versions.

### Expected behavior

Pip checks for a new version without an error.

### pip version

22.1.2

### Python version

3.9.13

### OS

Ubuntu 20.04

### How to Reproduce

1. `pip install pip==22.1.2`
2. `pip install pip`  <- Any package will do.


### Output

```shell
$ pip install pip
Defaulting to user installation because normal site-packages is not writeable
Requirement already satisfied: pip in ./.local/lib/python3.9/site-packages (22.1.2)
--- Logging error ---
Traceback (most recent call last):
  File "/home/domdf/.local/lib/python3.9/site-packages/pip/_internal/utils/logging.py", line 177, in emit
    self.console.print(renderable, overflow="ignore", crop=False, style=style)
  File "/home/domdf/.local/lib/python3.9/site-packages/pip/_vendor/rich/console.py", line 1752, in print
    extend(render(renderable, render_options))
  File "/home/domdf/.local/lib/python3.9/site-packages/pip/_vendor/rich/console.py", line 1390, in render
    for render_output in iter_render:
  File "/home/domdf/.local/lib/python3.9/site-packages/pip/_internal/utils/logging.py", line 134, in __rich_console__
    for line in lines:
  File "/home/domdf/.local/lib/python3.9/site-packages/pip/_vendor/rich/segment.py", line 245, in split_lines
    for segment in segments:
  File "/home/domdf/.local/lib/python3.9/site-packages/pip/_vendor/rich/console.py", line 1368, in render
    renderable = rich_cast(renderable)
  File "/home/domdf/.local/lib/python3.9/site-packages/pip/_vendor/rich/protocol.py", line 36, in rich_cast
    renderable = cast_method()
  File "/home/domdf/.local/lib/python3.9/site-packages/pip/_internal/self_outdated_check.py", line 130, in __rich__
    pip_cmd = get_best_invocation_for_this_pip()
  File "/home/domdf/.local/lib/python3.9/site-packages/pip/_internal/utils/entrypoints.py", line 58, in get_best_invocation_for_this_pip
    if found_executable and os.path.samefile(
  File "/usr/lib/python3.9/genericpath.py", line 101, in samefile
    s2 = os.stat(f2)
FileNotFoundError: [Errno 2] No such file or directory: '/usr/bin/pip'
Call stack:
  File "/usr/lib/python3.9/runpy.py", line 197, in _run_module_as_main
    return _run_code(code, main_globals, None,
  File "/usr/lib/python3.9/runpy.py", line 87, in _run_code
    exec(code, run_globals)
  File "/home/domdf/.local/lib/python3.9/site-packages/pip/__main__.py", line 31, in <module>
    sys.exit(_main())
  File "/home/domdf/.local/lib/python3.9/site-packages/pip/_internal/cli/main.py", line 70, in main
    return command.main(cmd_args)
  File "/home/domdf/.local/lib/python3.9/site-packages/pip/_internal/cli/base_command.py", line 101, in main
    return self._main(args)
  File "/home/domdf/.local/lib/python3.9/site-packages/pip/_internal/cli/base_command.py", line 223, in _main
    self.handle_pip_version_check(options)
  File "/home/domdf/.local/lib/python3.9/site-packages/pip/_internal/cli/req_command.py", line 148, in handle_pip_version_check
    pip_self_version_check(session, options)
  File "/home/domdf/.local/lib/python3.9/site-packages/pip/_internal/self_outdated_check.py", line 237, in pip_self_version_check
    logger.info("[present-rich] %s", upgrade_prompt)
  File "/usr/lib/python3.9/logging/__init__.py", line 1446, in info
    self._log(INFO, msg, args, **kwargs)
  File "/usr/lib/python3.9/logging/__init__.py", line 1589, in _log
    self.handle(record)
  File "/usr/lib/python3.9/logging/__init__.py", line 1599, in handle
    self.callHandlers(record)
  File "/usr/lib/python3.9/logging/__init__.py", line 1661, in callHandlers
    hdlr.handle(record)
  File "/usr/lib/python3.9/logging/__init__.py", line 952, in handle
    self.emit(record)
  File "/home/domdf/.local/lib/python3.9/site-packages/pip/_internal/utils/logging.py", line 179, in emit
    self.handleError(record)
Message: '[present-rich] %s'
Arguments: (UpgradePrompt(old='22.1.2', new='22.2'),)
```


### Code of Conduct

- [X] I agree to follow the [PSF Code of Conduct](https://www.python.org/psf/conduct/).

--- END ISSUE ---

Below are some code segments, each from a relevant file. One or more of these files may contain bugs.
--- BEGIN FILES ---
Path: `src/pip/_internal/utils/entrypoints.py`
Content:
```
1 import itertools
2 import os
3 import shutil
4 import sys
5 from typing import List, Optional
6 
7 from pip._internal.cli.main import main
8 from pip._internal.utils.compat import WINDOWS
9 
10 _EXECUTABLE_NAMES = [
11     "pip",
12     f"pip{sys.version_info.major}",
13     f"pip{sys.version_info.major}.{sys.version_info.minor}",
14 ]
15 if WINDOWS:
16     _allowed_extensions = {"", ".exe"}
17     _EXECUTABLE_NAMES = [
18         "".join(parts)
19         for parts in itertools.product(_EXECUTABLE_NAMES, _allowed_extensions)
20     ]
21 
22 
23 def _wrapper(args: Optional[List[str]] = None) -> int:
24     """Central wrapper for all old entrypoints.
25 
26     Historically pip has had several entrypoints defined. Because of issues
27     arising from PATH, sys.path, multiple Pythons, their interactions, and most
28     of them having a pip installed, users suffer every time an entrypoint gets
29     moved.
30 
31     To alleviate this pain, and provide a mechanism for warning users and
32     directing them to an appropriate place for help, we now define all of
33     our old entrypoints as wrappers for the current one.
34     """
35     sys.stderr.write(
36         "WARNING: pip is being invoked by an old script wrapper. This will "
37         "fail in a future version of pip.\n"
38         "Please see https://github.com/pypa/pip/issues/5599 for advice on "
39         "fixing the underlying issue.\n"
40         "To avoid this problem you can invoke Python with '-m pip' instead of "
41         "running pip directly.\n"
42     )
43     return main(args)
44 
45 
46 def get_best_invocation_for_this_pip() -> str:
47     """Try to figure out the best way to invoke pip in the current environment."""
48     binary_directory = "Scripts" if WINDOWS else "bin"
49     binary_prefix = os.path.join(sys.prefix, binary_directory)
50 
51     # Try to use pip[X[.Y]] names, if those executables for this environment are
52     # the first on PATH with that name.
53     path_parts = os.path.normcase(os.environ.get("PATH", "")).split(os.pathsep)
54     exe_are_in_PATH = os.path.normcase(binary_prefix) in path_parts
55     if exe_are_in_PATH:
56         for exe_name in _EXECUTABLE_NAMES:
57             found_executable = shutil.which(exe_name)
58             if found_executable and os.path.samefile(
59                 found_executable,
60                 os.path.join(binary_prefix, exe_name),
61             ):
62                 return exe_name
63 
64     # Use the `-m` invocation, if there's no "nice" invocation.
65     return f"{get_best_invocation_for_this_python()} -m pip"
66 
67 
68 def get_best_invocation_for_this_python() -> str:
69     """Try to figure out the best way to invoke the current Python."""
70     exe = sys.executable
71     exe_name = os.path.basename(exe)
72 
73     # Try to use the basename, if it's the first executable.
74     found_executable = shutil.which(exe_name)
75     if found_executable and os.path.samefile(found_executable, exe):
76         return exe_name
77 
78     # Use the full executable name, because we couldn't find something simpler.
79     return exe
80
```
--- 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()

```

diff --git a/src/pip/_internal/utils/entrypoints.py b/src/pip/_internal/utils/entrypoints.py
--- a/src/pip/_internal/utils/entrypoints.py
+++ b/src/pip/_internal/utils/entrypoints.py
@@ -55,9 +55,14 @@
     if exe_are_in_PATH:
         for exe_name in _EXECUTABLE_NAMES:
             found_executable = shutil.which(exe_name)
-            if found_executable and os.path.samefile(
-                found_executable,
-                os.path.join(binary_prefix, exe_name),
+            binary_executable = os.path.join(binary_prefix, exe_name)
+            if (
+                found_executable
+                and os.path.exists(binary_executable)
+                and os.path.samefile(
+                    found_executable,
+                    binary_executable,
+                )
             ):
                 return exe_name

{"golden_diff": "diff --git a/src/pip/_internal/utils/entrypoints.py b/src/pip/_internal/utils/entrypoints.py\n--- a/src/pip/_internal/utils/entrypoints.py\n+++ b/src/pip/_internal/utils/entrypoints.py\n@@ -55,9 +55,14 @@\n     if exe_are_in_PATH:\n         for exe_name in _EXECUTABLE_NAMES:\n             found_executable = shutil.which(exe_name)\n-            if found_executable and os.path.samefile(\n-                found_executable,\n-                os.path.join(binary_prefix, exe_name),\n+            binary_executable = os.path.join(binary_prefix, exe_name)\n+            if (\n+                found_executable\n+                and os.path.exists(binary_executable)\n+                and os.path.samefile(\n+                    found_executable,\n+                    binary_executable,\n+                )\n             ):\n                 return exe_name\n", "issue": "Logging error when checking for new version of pip.\n### Description\n\nWhen pip (22.1.2) checked for a new version it failed with an error. It's coming from the following function:\r\n\r\nhttps://github.com/pypa/pip/blob/c4606b3572529625762f0586dda134302cf6122c/src/pip/_internal/utils/entrypoints.py#L46-L62\r\n\r\nThe problem call is to `os.path.samefile` on line 58, where it compares the output of `shutil.which('pip')` to `<sys.prefix>/bin/pip` (in my case `/usr/bin/pip`). However, on my system, `pip` is installed to the user site-packages directory (so the binary is at `/home/domdf/.local/bin/pip`).\r\n\r\nThe solution is to check whether the file exists before calling `samefile`.\r\n\r\nI have Python 3.7 and 3.9 installed to `/usr` alongside the system's Python 3.8, and the error is present with all three versions.\n\n### Expected behavior\n\nPip checks for a new version without an error.\n\n### pip version\n\n22.1.2\n\n### Python version\n\n3.9.13\n\n### OS\n\nUbuntu 20.04\n\n### How to Reproduce\n\n1. `pip install pip==22.1.2`\r\n2. `pip install pip`  <- Any package will do.\r\n\n\n### Output\n\n```shell\n$ pip install pip\r\nDefaulting to user installation because normal site-packages is not writeable\r\nRequirement already satisfied: pip in ./.local/lib/python3.9/site-packages (22.1.2)\r\n--- Logging error ---\r\nTraceback (most recent call last):\r\n  File \"/home/domdf/.local/lib/python3.9/site-packages/pip/_internal/utils/logging.py\", line 177, in emit\r\n    self.console.print(renderable, overflow=\"ignore\", crop=False, style=style)\r\n  File \"/home/domdf/.local/lib/python3.9/site-packages/pip/_vendor/rich/console.py\", line 1752, in print\r\n    extend(render(renderable, render_options))\r\n  File \"/home/domdf/.local/lib/python3.9/site-packages/pip/_vendor/rich/console.py\", line 1390, in render\r\n    for render_output in iter_render:\r\n  File \"/home/domdf/.local/lib/python3.9/site-packages/pip/_internal/utils/logging.py\", line 134, in __rich_console__\r\n    for line in lines:\r\n  File \"/home/domdf/.local/lib/python3.9/site-packages/pip/_vendor/rich/segment.py\", line 245, in split_lines\r\n    for segment in segments:\r\n  File \"/home/domdf/.local/lib/python3.9/site-packages/pip/_vendor/rich/console.py\", line 1368, in render\r\n    renderable = rich_cast(renderable)\r\n  File \"/home/domdf/.local/lib/python3.9/site-packages/pip/_vendor/rich/protocol.py\", line 36, in rich_cast\r\n    renderable = cast_method()\r\n  File \"/home/domdf/.local/lib/python3.9/site-packages/pip/_internal/self_outdated_check.py\", line 130, in __rich__\r\n    pip_cmd = get_best_invocation_for_this_pip()\r\n  File \"/home/domdf/.local/lib/python3.9/site-packages/pip/_internal/utils/entrypoints.py\", line 58, in get_best_invocation_for_this_pip\r\n    if found_executable and os.path.samefile(\r\n  File \"/usr/lib/python3.9/genericpath.py\", line 101, in samefile\r\n    s2 = os.stat(f2)\r\nFileNotFoundError: [Errno 2] No such file or directory: '/usr/bin/pip'\r\nCall stack:\r\n  File \"/usr/lib/python3.9/runpy.py\", line 197, in _run_module_as_main\r\n    return _run_code(code, main_globals, None,\r\n  File \"/usr/lib/python3.9/runpy.py\", line 87, in _run_code\r\n    exec(code, run_globals)\r\n  File \"/home/domdf/.local/lib/python3.9/site-packages/pip/__main__.py\", line 31, in <module>\r\n    sys.exit(_main())\r\n  File \"/home/domdf/.local/lib/python3.9/site-packages/pip/_internal/cli/main.py\", line 70, in main\r\n    return command.main(cmd_args)\r\n  File \"/home/domdf/.local/lib/python3.9/site-packages/pip/_internal/cli/base_command.py\", line 101, in main\r\n    return self._main(args)\r\n  File \"/home/domdf/.local/lib/python3.9/site-packages/pip/_internal/cli/base_command.py\", line 223, in _main\r\n    self.handle_pip_version_check(options)\r\n  File \"/home/domdf/.local/lib/python3.9/site-packages/pip/_internal/cli/req_command.py\", line 148, in handle_pip_version_check\r\n    pip_self_version_check(session, options)\r\n  File \"/home/domdf/.local/lib/python3.9/site-packages/pip/_internal/self_outdated_check.py\", line 237, in pip_self_version_check\r\n    logger.info(\"[present-rich] %s\", upgrade_prompt)\r\n  File \"/usr/lib/python3.9/logging/__init__.py\", line 1446, in info\r\n    self._log(INFO, msg, args, **kwargs)\r\n  File \"/usr/lib/python3.9/logging/__init__.py\", line 1589, in _log\r\n    self.handle(record)\r\n  File \"/usr/lib/python3.9/logging/__init__.py\", line 1599, in handle\r\n    self.callHandlers(record)\r\n  File \"/usr/lib/python3.9/logging/__init__.py\", line 1661, in callHandlers\r\n    hdlr.handle(record)\r\n  File \"/usr/lib/python3.9/logging/__init__.py\", line 952, in handle\r\n    self.emit(record)\r\n  File \"/home/domdf/.local/lib/python3.9/site-packages/pip/_internal/utils/logging.py\", line 179, in emit\r\n    self.handleError(record)\r\nMessage: '[present-rich] %s'\r\nArguments: (UpgradePrompt(old='22.1.2', new='22.2'),)\n```\n\n\n### Code of Conduct\n\n- [X] I agree to follow the [PSF Code of Conduct](https://www.python.org/psf/conduct/).\n", "before_files": [{"content": "import itertools\nimport os\nimport shutil\nimport sys\nfrom typing import List, Optional\n\nfrom pip._internal.cli.main import main\nfrom pip._internal.utils.compat import WINDOWS\n\n_EXECUTABLE_NAMES = [\n    \"pip\",\n    f\"pip{sys.version_info.major}\",\n    f\"pip{sys.version_info.major}.{sys.version_info.minor}\",\n]\nif WINDOWS:\n    _allowed_extensions = {\"\", \".exe\"}\n    _EXECUTABLE_NAMES = [\n        \"\".join(parts)\n        for parts in itertools.product(_EXECUTABLE_NAMES, _allowed_extensions)\n    ]\n\n\ndef _wrapper(args: Optional[List[str]] = None) -> int:\n    \"\"\"Central wrapper for all old entrypoints.\n\n    Historically pip has had several entrypoints defined. Because of issues\n    arising from PATH, sys.path, multiple Pythons, their interactions, and most\n    of them having a pip installed, users suffer every time an entrypoint gets\n    moved.\n\n    To alleviate this pain, and provide a mechanism for warning users and\n    directing them to an appropriate place for help, we now define all of\n    our old entrypoints as wrappers for the current one.\n    \"\"\"\n    sys.stderr.write(\n        \"WARNING: pip is being invoked by an old script wrapper. This will \"\n        \"fail in a future version of pip.\\n\"\n        \"Please see https://github.com/pypa/pip/issues/5599 for advice on \"\n        \"fixing the underlying issue.\\n\"\n        \"To avoid this problem you can invoke Python with '-m pip' instead of \"\n        \"running pip directly.\\n\"\n    )\n    return main(args)\n\n\ndef get_best_invocation_for_this_pip() -> str:\n    \"\"\"Try to figure out the best way to invoke pip in the current environment.\"\"\"\n    binary_directory = \"Scripts\" if WINDOWS else \"bin\"\n    binary_prefix = os.path.join(sys.prefix, binary_directory)\n\n    # Try to use pip[X[.Y]] names, if those executables for this environment are\n    # the first on PATH with that name.\n    path_parts = os.path.normcase(os.environ.get(\"PATH\", \"\")).split(os.pathsep)\n    exe_are_in_PATH = os.path.normcase(binary_prefix) in path_parts\n    if exe_are_in_PATH:\n        for exe_name in _EXECUTABLE_NAMES:\n            found_executable = shutil.which(exe_name)\n            if found_executable and os.path.samefile(\n                found_executable,\n                os.path.join(binary_prefix, exe_name),\n            ):\n                return exe_name\n\n    # Use the `-m` invocation, if there's no \"nice\" invocation.\n    return f\"{get_best_invocation_for_this_python()} -m pip\"\n\n\ndef get_best_invocation_for_this_python() -> str:\n    \"\"\"Try to figure out the best way to invoke the current Python.\"\"\"\n    exe = sys.executable\n    exe_name = os.path.basename(exe)\n\n    # Try to use the basename, if it's the first executable.\n    found_executable = shutil.which(exe_name)\n    if found_executable and os.path.samefile(found_executable, exe):\n        return exe_name\n\n    # Use the full executable name, because we couldn't find something simpler.\n    return exe\n", "path": "src/pip/_internal/utils/entrypoints.py"}], "after_files": [{"content": "import itertools\nimport os\nimport shutil\nimport sys\nfrom typing import List, Optional\n\nfrom pip._internal.cli.main import main\nfrom pip._internal.utils.compat import WINDOWS\n\n_EXECUTABLE_NAMES = [\n    \"pip\",\n    f\"pip{sys.version_info.major}\",\n    f\"pip{sys.version_info.major}.{sys.version_info.minor}\",\n]\nif WINDOWS:\n    _allowed_extensions = {\"\", \".exe\"}\n    _EXECUTABLE_NAMES = [\n        \"\".join(parts)\n        for parts in itertools.product(_EXECUTABLE_NAMES, _allowed_extensions)\n    ]\n\n\ndef _wrapper(args: Optional[List[str]] = None) -> int:\n    \"\"\"Central wrapper for all old entrypoints.\n\n    Historically pip has had several entrypoints defined. Because of issues\n    arising from PATH, sys.path, multiple Pythons, their interactions, and most\n    of them having a pip installed, users suffer every time an entrypoint gets\n    moved.\n\n    To alleviate this pain, and provide a mechanism for warning users and\n    directing them to an appropriate place for help, we now define all of\n    our old entrypoints as wrappers for the current one.\n    \"\"\"\n    sys.stderr.write(\n        \"WARNING: pip is being invoked by an old script wrapper. This will \"\n        \"fail in a future version of pip.\\n\"\n        \"Please see https://github.com/pypa/pip/issues/5599 for advice on \"\n        \"fixing the underlying issue.\\n\"\n        \"To avoid this problem you can invoke Python with '-m pip' instead of \"\n        \"running pip directly.\\n\"\n    )\n    return main(args)\n\n\ndef get_best_invocation_for_this_pip() -> str:\n    \"\"\"Try to figure out the best way to invoke pip in the current environment.\"\"\"\n    binary_directory = \"Scripts\" if WINDOWS else \"bin\"\n    binary_prefix = os.path.join(sys.prefix, binary_directory)\n\n    # Try to use pip[X[.Y]] names, if those executables for this environment are\n    # the first on PATH with that name.\n    path_parts = os.path.normcase(os.environ.get(\"PATH\", \"\")).split(os.pathsep)\n    exe_are_in_PATH = os.path.normcase(binary_prefix) in path_parts\n    if exe_are_in_PATH:\n        for exe_name in _EXECUTABLE_NAMES:\n            found_executable = shutil.which(exe_name)\n            binary_executable = os.path.join(binary_prefix, exe_name)\n            if (\n                found_executable\n                and os.path.exists(binary_executable)\n                and os.path.samefile(\n                    found_executable,\n                    binary_executable,\n                )\n            ):\n                return exe_name\n\n    # Use the `-m` invocation, if there's no \"nice\" invocation.\n    return f\"{get_best_invocation_for_this_python()} -m pip\"\n\n\ndef get_best_invocation_for_this_python() -> str:\n    \"\"\"Try to figure out the best way to invoke the current Python.\"\"\"\n    exe = sys.executable\n    exe_name = os.path.basename(exe)\n\n    # Try to use the basename, if it's the first executable.\n    found_executable = shutil.which(exe_name)\n    if found_executable and os.path.samefile(found_executable, exe):\n        return exe_name\n\n    # Use the full executable name, because we couldn't find something simpler.\n    return exe\n", "path": "src/pip/_internal/utils/entrypoints.py"}]}