mit neuen venv und exe-Files

venv3_12/Lib/site-packages/numpy/lib/tests/test_utils.py

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+import pytest
+
+import numpy as np
+from numpy.testing import assert_raises_regex
+import numpy.lib._utils_impl as _utils_impl
+
+from io import StringIO
+
+
+def test_assert_raises_regex_context_manager():
+    with assert_raises_regex(ValueError, 'no deprecation warning'):
+        raise ValueError('no deprecation warning')
+
+
+def test_info_method_heading():
+    # info(class) should only print "Methods:" heading if methods exist
+
+    class NoPublicMethods:
+        pass
+
+    class WithPublicMethods:
+        def first_method():
+            pass
+
+    def _has_method_heading(cls):
+        out = StringIO()
+        np.info(cls, output=out)
+        return 'Methods:' in out.getvalue()
+
+    assert _has_method_heading(WithPublicMethods)
+    assert not _has_method_heading(NoPublicMethods)
+
+
+def test_drop_metadata():
+    def _compare_dtypes(dt1, dt2):
+        return np.can_cast(dt1, dt2, casting='no')
+
+    # structured dtype
+    dt = np.dtype([('l1', [('l2', np.dtype('S8', metadata={'msg': 'toto'}))])],
+                  metadata={'msg': 'titi'})
+    dt_m = _utils_impl.drop_metadata(dt)
+    assert _compare_dtypes(dt, dt_m) is True
+    assert dt_m.metadata is None
+    assert dt_m['l1'].metadata is None
+    assert dt_m['l1']['l2'].metadata is None
+
+    # alignment
+    dt = np.dtype([('x', '<f8'), ('y', '<i4')],
+                  align=True,
+                  metadata={'msg': 'toto'})
+    dt_m = _utils_impl.drop_metadata(dt)
+    assert _compare_dtypes(dt, dt_m) is True
+    assert dt_m.metadata is None
+
+    # subdtype
+    dt = np.dtype('8f',
+                  metadata={'msg': 'toto'})
+    dt_m = _utils_impl.drop_metadata(dt)
+    assert _compare_dtypes(dt, dt_m) is True
+    assert dt_m.metadata is None
+
+    # scalar
+    dt = np.dtype('uint32',
+                  metadata={'msg': 'toto'})
+    dt_m = _utils_impl.drop_metadata(dt)
+    assert _compare_dtypes(dt, dt_m) is True
+    assert dt_m.metadata is None
+
+
+@pytest.mark.parametrize("dtype",
+        [np.dtype("i,i,i,i")[["f1", "f3"]],
+        np.dtype("f8"),
+        np.dtype("10i")])
+def test_drop_metadata_identity_and_copy(dtype):
+    # If there is no metadata, the identity is preserved:
+    assert _utils_impl.drop_metadata(dtype) is dtype
+
+    # If there is any, it is dropped (subforms are checked above)
+    dtype = np.dtype(dtype, metadata={1: 2})
+    assert _utils_impl.drop_metadata(dtype).metadata is None