Remove non-version metadata hack

changelog.d/1268.breaking.md

@@ -0,0 +1,3 @@
+All packaging metadata except from `__version__` and `__version_info__` has been removed from the `attr` and `attrs` modules (for example, `attrs.__url__`).
+
+Please use [`importlib.metadata`](https://docs.python.org/3/library/importlib.metadata.html) or [*importlib_metadata*](https://pypi.org/project/importlib-metadata/) instead.

src/attr/__init__.py

@@ -79,54 +79,21 @@ def _make_getattr(mod_name: str) -> Callable:
  """
 
  def __getattr__(name: str) -> str:
- dunder_to_metadata = {
- "__title__": "Name",
- "__copyright__": "",
- "__version__": "version",
- "__version_info__": "version",
- "__description__": "summary",
- "__uri__": "",
- "__url__": "",
- "__author__": "",
- "__email__": "",
- "__license__": "license",
- }
- if name not in dunder_to_metadata:
+ if name not in ("__version__", "__version_info__"):
  msg = f"module {mod_name} has no attribute {name}"
  raise AttributeError(msg)
 
- import sys
- import warnings
-
- if sys.version_info < (3, 8):
- from importlib_metadata import metadata
- else:
+ try:
  from importlib.metadata import metadata
-
- if name not in ("__version__", "__version_info__"):
- warnings.warn(
- f"Accessing {mod_name}.{name} is deprecated and will be "
- "removed in a future release. Use importlib.metadata directly "
- "to query for attrs's packaging metadata.",
- DeprecationWarning,
- stacklevel=2,
- )
+ except ImportError:
+ from importlib_metadata import metadata
 
  meta = metadata("attrs")
- if name == "__license__":
- return "MIT"
- if name == "__copyright__":
- return "Copyright (c) 2015 Hynek Schlawack"
- if name in ("__uri__", "__url__"):
- return meta["Project-URL"].split(" ", 1)[-1]
+
  if name == "__version_info__":
  return VersionInfo._from_version_string(meta["version"])
- if name == "__author__":
- return meta["Author-email"].rsplit(" ", 1)[0]
- if name == "__email__":
- return meta["Author-email"].rsplit("<", 1)[1][:-1]
 
- return meta[dunder_to_metadata[name]]
+ return meta["version"]
 
  return __getattr__
 

tests/test_packaging.py

@@ -20,30 +20,6 @@ def _mod(request):
 
 
 class TestLegacyMetadataHack:
- def test_title(self, mod):
- """
- __title__ returns attrs.
- """
- with pytest.deprecated_call() as ws:
- assert "attrs" == mod.__title__
-
- assert (
- f"Accessing {mod.__name__}.__title__ is deprecated"
- in ws.list[0].message.args[0]
- )
-
- def test_copyright(self, mod):
- """
- __copyright__ returns the correct blurp.
- """
- with pytest.deprecated_call() as ws:
- assert "Copyright (c) 2015 Hynek Schlawack" == mod.__copyright__
-
- assert (
- f"Accessing {mod.__name__}.__copyright__ is deprecated"
- in ws.list[0].message.args[0]
- )
-
  def test_version(self, mod, recwarn):
  """
  __version__ returns the correct version and doesn't warn.
@@ -52,67 +28,6 @@ def test_version(self, mod, recwarn):
 
  assert [] == recwarn.list
 
- def test_description(self, mod):
- """
- __description__ returns the correct description.
- """
- with pytest.deprecated_call() as ws:
- assert "Classes Without Boilerplate" == mod.__description__
-
- assert (
- f"Accessing {mod.__name__}.__description__ is deprecated"
- in ws.list[0].message.args[0]
- )
-
- @pytest.mark.parametrize("name", ["__uri__", "__url__"])
- def test_uri(self, mod, name):
- """
- __uri__ & __url__ returns the correct project URL.
- """
- with pytest.deprecated_call() as ws:
- assert "https://www.attrs.org/" == getattr(mod, name)
-
- assert (
- f"Accessing {mod.__name__}.{name} is deprecated"
- in ws.list[0].message.args[0]
- )
-
- def test_author(self, mod):
- """
- __author__ returns Hynek.
- """
- with pytest.deprecated_call() as ws:
- assert "Hynek Schlawack" == mod.__author__
-
- assert (
- f"Accessing {mod.__name__}.__author__ is deprecated"
- in ws.list[0].message.args[0]
- )
-
- def test_email(self, mod):
- """
- __email__ returns Hynek's email address.
- """
- with pytest.deprecated_call() as ws:
- assert "[email protected]" == mod.__email__
-
- assert (
- f"Accessing {mod.__name__}.__email__ is deprecated"
- in ws.list[0].message.args[0]
- )
-
- def test_license(self, mod):
- """
- __license__ returns MIT.
- """
- with pytest.deprecated_call() as ws:
- assert "MIT" == mod.__license__
-
- assert (
- f"Accessing {mod.__name__}.__license__ is deprecated"
- in ws.list[0].message.args[0]
- )
-
  def test_does_not_exist(self, mod):
  """
  Asking for unsupported dunders raises an AttributeError.