Method write

Lib/test/test_zstd.py:2437–2438

(self, b)

        # write, no .flush() method
        class C:
            def write(self, b):
                return len(b)
        with ZstdFile(C(), 'w') as f:
            self.assertEqual(f.write(DAT), len(DAT))
            self.assertEqual(f.tell(), len(DAT))