Remove deprecated Python Version identifiers

airflow/__init__.py

@@ -100,15 +100,6 @@ def __getattr__(name: str):
     # PEP-562: Lazy loaded attributes on python modules
     module_path, attr_name, deprecated = __lazy_imports.get(name, ("", "", False))
     if not module_path:
-        if name.startswith("PY3") and (py_minor := name[3:]) in ("6", "7", "8", "9", "10", "11", "12"):
-            warnings.warn(
-                f"Python version constraint {name!r} is deprecated and will be removed in the future. "
-                f"Please get version info from the 'sys.version_info'.",
-                DeprecationWarning,
-                stacklevel=2,
-            )
-            return sys.version_info >= (3, int(py_minor))
-
         raise AttributeError(f"module {__name__!r} has no attribute {name!r}")
     elif deprecated:
         warnings.warn(

newsfragments/43562.significant.rst

@@ -0,0 +1,24 @@
+Removed Deprecated Python Version Identifiers from the ``airflow`` Module
+
+Python version check constants, such as ``PY36``, ``PY37``, and others, have been removed from the ``airflow``
+module. To check Python versions, please use the ``sys.version_info`` attribute directly instead.
+
+Before:
+
+.. code-block:: python
+
+    from airflow import PY36
+
+    if PY36:
+        # perform some action
+        ...
+
+After:
+
+.. code-block:: python
+
+    import sys
+
+    if sys.version_info >= (3, 6):
+        # perform some action
+        ...

pyproject.toml

@@ -410,13 +410,6 @@ banned-module-level-imports = ["numpy", "pandas"]
 # Direct import from the airflow package modules and constraints
 "airflow.AirflowException".msg = "Use airflow.exceptions.AirflowException instead."
 "airflow.Dataset".msg = "Use airflow.datasets.Dataset instead."
-"airflow.PY36".msg = "Use sys.version_info >= (3, 6) instead."
-"airflow.PY37".msg = "Use sys.version_info >= (3, 7) instead."
-"airflow.PY38".msg = "Use sys.version_info >= (3, 8) instead."
-"airflow.PY39".msg = "Use sys.version_info >= (3, 9) instead."
-"airflow.PY310".msg = "Use sys.version_info >= (3, 10) instead."
-"airflow.PY311".msg = "Use sys.version_info >= (3, 11) instead."
-"airflow.PY312".msg = "Use sys.version_info >= (3, 12) instead."
 # Deprecated imports
 "airflow.models.baseoperator.BaseOperatorLink".msg = "Use airflow.models.baseoperatorlink.BaseOperatorLink"
 "airflow.models.errors.ImportError".msg = "Use airflow.models.errors.ParseImportError"

tests/core/test_airflow_module.py

@@ -16,36 +16,11 @@
 # under the License.
 from __future__ import annotations
 
-import sys
-
 import pytest
 
 import airflow
 from airflow.exceptions import AirflowException
 
-TEST_CASES = {
-    "PY36": sys.version_info >= (3, 6),
-    "PY37": sys.version_info >= (3, 7),
-    "PY38": sys.version_info >= (3, 8),
-    "PY39": sys.version_info >= (3, 9),
-    "PY310": sys.version_info >= (3, 10),
-    "PY311": sys.version_info >= (3, 11),
-    "PY312": sys.version_info >= (3, 12),
-}
-
-
-@pytest.mark.parametrize("py_attr, expected", TEST_CASES.items())
-def test_lazy_load_py_versions(py_attr, expected):
-    with pytest.warns(DeprecationWarning, match=f"Python version constraint '{py_attr}' is deprecated"):
-        # If there is no warning, then most possible it imported somewhere else.
-        assert getattr(airflow, py_attr) is expected
-
-
-@pytest.mark.parametrize("py_attr", ["PY35", "PY313"])
-def test_wrong_py_version(py_attr):
-    with pytest.raises(AttributeError, match=f"'airflow' has no attribute '{py_attr}'"):
-        getattr(airflow, py_attr)
-
 
 def test_deprecated_exception():
     warning_pattern = "Import 'AirflowException' directly from the airflow module is deprecated"