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plotter-app/venv/lib/python3.8/site-packages/numpy/compat/tests/test_compat.py

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+from os.path import join
+from io import BufferedReader, BytesIO
+
+from numpy.compat.py3k import isfileobj, _isfileobj
+from numpy.testing import assert_
+from numpy.testing import tempdir
+
+
+def test_isfileobj():
+    with tempdir(prefix="numpy_test_compat_") as folder:
+        filename = join(folder, 'a.bin')
+
+        with open(filename, 'wb') as f:
+            assert_(isfileobj(f))
+
+        with open(filename, 'ab') as f:
+            assert_(isfileobj(f))
+
+        with open(filename, 'rb') as f:
+            assert_(isfileobj(f))
+
+def test__isfileobj():
+    with tempdir(prefix="numpy_test_compat_") as folder:
+        filename = join(folder, 'a.bin')
+
+        with open(filename, 'wb') as f:
+            assert_(_isfileobj(f))
+
+        with open(filename, 'ab') as f:
+            assert_(_isfileobj(f))
+
+        with open(filename, 'rb') as f:
+            assert_(_isfileobj(f))
+        
+        assert_(_isfileobj(BufferedReader(BytesIO())) is False)