chore: adds bench.py

examples/bench.py

@@ -0,0 +1,20 @@
+import pathlib
+import time
+from collections import defaultdict
+from pyais import FileReaderStream
+from pyais.exceptions import UnknownMessageException
+
+file = pathlib.Path(__file__).parent.joinpath('../tests/nmea-sample')
+stats = defaultdict(lambda: 0)
+start = time.time()
+
+for i, msg in enumerate(FileReaderStream(file), 1):
+    try:
+        decoded = msg.decode()
+        stats[decoded.msg_type] += 1
+    except UnknownMessageException:
+        stats['errors'] += 1
+
+
+print(stats)
+print(f'Decoded {i} NMEA AIS messages in {time.time() - start: .2f}s')