Raise warning for more operations

Tests/test_image.py

@@ -611,11 +611,29 @@ class TestImage:
 
     def test_pillow_version(self):
         with pytest.warns(DeprecationWarning):
-            assert PIL.__version__ == PIL.PILLOW_VERSION
+            assert PIL.PILLOW_VERSION == PIL.__version__
+
+        with pytest.warns(DeprecationWarning):
+            str(PIL.PILLOW_VERSION)
 
         with pytest.warns(DeprecationWarning):
             assert int(PIL.PILLOW_VERSION[0]) >= 7
 
+        with pytest.warns(DeprecationWarning):
+            assert PIL.PILLOW_VERSION < "9.9.0"
+
+        with pytest.warns(DeprecationWarning):
+            assert PIL.PILLOW_VERSION <= "9.9.0"
+
+        with pytest.warns(DeprecationWarning):
+            assert PIL.PILLOW_VERSION != "7.0.0"
+
+        with pytest.warns(DeprecationWarning):
+            assert PIL.PILLOW_VERSION >= "7.0.0"
+
+        with pytest.warns(DeprecationWarning):
+            assert PIL.PILLOW_VERSION > "7.0.0"
+
     def test_overrun(self):
         for file in [
             "fli_overrun.bin",

src/PIL/Image.py

@@ -42,18 +42,32 @@ from pathlib import Path
 # PILLOW_VERSION is deprecated and will be removed in a future release.
 # Use __version__ instead.
 from . import (
-    PILLOW_VERSION,
     ImageMode,
     TiffTags,
     UnidentifiedImageError,
     __version__,
     _plugins,
+    _raise_version_warning,
 )
 from ._binary import i8, i32le
 from ._util import deferred_error, isPath
 
-# Silence warning
+if sys.version_info >= (3, 7):
-assert PILLOW_VERSION
+
+    def __getattr__(name):
+        if name == "PILLOW_VERSION":
+            _raise_version_warning()
+            return __version__
+        raise AttributeError("module '{}' has no attribute '{}'".format(__name__, name))
+
+
+else:
+
+    from . import PILLOW_VERSION
+
+    # Silence warning
+    assert PILLOW_VERSION
+
 
 logger = logging.getLogger(__name__)
 

src/PIL/__init__.py

@@ -13,6 +13,7 @@ Use PIL.__version__ for this Pillow version.
 ;-)
 """
 
+import sys
 import warnings
 
 from . import _version
@@ -21,27 +22,62 @@ from . import _version
 __version__ = _version.__version__
 
 
-class _Deprecated_Version(str):
-    def _raise_warning(self):
-        warnings.warn(
-            "PILLOW_VERSION is deprecated and will be removed in a future release. "
-            "Use __version__ instead.",
-            DeprecationWarning,
-            stacklevel=3,
-        )
-
-    def __getitem__(self, key):
-        self._raise_warning()
-        return super().__getitem__(key)
-
-    def __eq__(self, other):
-        self._raise_warning()
-        return super().__eq__(other)
-
-
 # PILLOW_VERSION is deprecated and will be removed in a future release.
 # Use __version__ instead.
-PILLOW_VERSION = _Deprecated_Version(__version__)
+def _raise_version_warning():
+    warnings.warn(
+        "PILLOW_VERSION is deprecated and will be removed in a future release. "
+        "Use __version__ instead.",
+        DeprecationWarning,
+        stacklevel=3,
+    )
+
+
+if sys.version_info >= (3, 7):
+
+    def __getattr__(name):
+        if name == "PILLOW_VERSION":
+            _raise_version_warning()
+            return __version__
+        raise AttributeError("module '{}' has no attribute '{}'".format(__name__, name))
+
+
+else:
+
+    class _Deprecated_Version(str):
+        def __str__(self):
+            _raise_version_warning()
+            return super().__str__()
+
+        def __getitem__(self, key):
+            _raise_version_warning()
+            return super().__getitem__(key)
+
+        def __eq__(self, other):
+            _raise_version_warning()
+            return super().__eq__(other)
+
+        def __ne__(self, other):
+            _raise_version_warning()
+            return super().__ne__(other)
+
+        def __gt__(self, other):
+            _raise_version_warning()
+            return super().__gt__(other)
+
+        def __lt__(self, other):
+            _raise_version_warning()
+            return super().__lt__(other)
+
+        def __ge__(self, other):
+            _raise_version_warning()
+            return super().__gt__(other)
+
+        def __le__(self, other):
+            _raise_version_warning()
+            return super().__lt__(other)
+
+    PILLOW_VERSION = _Deprecated_Version(__version__)
 
 del _version