Resolve the default CLI env path on each invocation

CHANGELOG.md

@@ -9,6 +9,7 @@ project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 ### Fixed
 
+- Resolve the CLI's default `.env` path in the current working directory on each invocation, rather than at import time by [@kokotatan] in [#718]
 - Fix a package build deprecation warning caused by a non-string `license` value in `pyproject.toml` by [@kurtmckee] in [#648]
 - `set_key`, `unset_key` and the `dotenv set`/`unset` commands now name the `.env` path instead of an internal temporary file when its directory is missing or not writable, and the CLI prints a short error and exits with code 2 instead of a traceback by [@jamalkamaladdin] in [#711]
 - `set_key` and `unset_key` no longer leave a `.tmp_*` file behind on Windows when writing a read-only `.env` fails, and the error raised is the one from the failed write rather than from cleaning up the temporary file by [@MohammedAlkindi] in [#686]
@@ -467,6 +468,7 @@ os.PathLike]` instead of just `os.PathLike` (#347 by [@bbc2]).
 [#700]: https://github.com/theskumar/python-dotenv/pull/700
 [#711]: https://github.com/theskumar/python-dotenv/pull/711
 [#714]: https://github.com/theskumar/python-dotenv/pull/714
+[#718]: https://github.com/theskumar/python-dotenv/pull/718
 [790c5c0]: https://github.com/theskumar/python-dotenv/commit/790c5c02991100aa1bf41ee5330aca75edc51311
 
 <!-- contributors -->
@@ -505,6 +507,7 @@ os.PathLike]` instead of just `os.PathLike` (#347 by [@bbc2]).
 [@jamalkamaladdin]: https://github.com/jamalkamaladdin
 [@jankislinger]: https://github.com/jankislinger
 [@jctanner]: https://github.com/jctanner
+[@kokotatan]: https://github.com/kokotatan
 [@kurtmckee]: https://github.com/kurtmckee
 [@larsks]: https://github.com/larsks
 [@lsmith77]: https://github.com/lsmith77

src/dotenv/cli.py

@@ -39,7 +39,7 @@ def enumerate_env() -> Optional[str]:
 @click.option(
     "-f",
     "--file",
-    default=enumerate_env(),
+    default=enumerate_env,
     type=click.Path(file_okay=True),
     help="Location of the .env file, defaults to .env file in current working directory.",
 )

tests/test_cli.py

@@ -40,6 +40,26 @@ def test_list(
     assert (result.exit_code, result.output) == (0, expected)
 
 
+@pytest.mark.parametrize("command", [["list"], ["get", "KEY"]])
+def test_default_file_uses_current_directory(cli, tmp_path, monkeypatch, command):
+    first = tmp_path / "first"
+    second = tmp_path / "second"
+    first.mkdir()
+    second.mkdir()
+    (first / ".env").write_text("KEY=first\n")
+    (second / ".env").write_text("KEY=second\n")
+
+    for directory, value in [(first, "first"), (second, "second")]:
+        monkeypatch.chdir(directory)
+        result = cli.invoke(dotenv_cli, command)
+        expected = f"KEY={value}\n" if command == ["list"] else f"{value}\n"
+        assert (result.exit_code, result.output) == (0, expected)
+
+    result = cli.invoke(dotenv_cli, ["--file", first / ".env", *command])
+    expected = "KEY=first\n" if command == ["list"] else "first\n"
+    assert (result.exit_code, result.output) == (0, expected)
+
+
 def test_list_non_existent_file(cli):
     result = cli.invoke(dotenv_cli, ["--file", "nx_file", "list"])