完美，同志，完美！！！！！！！

old-things/test_msq_opera.py

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+from rich.pretty import pprint
+
+import Musicreater.old_init as old_init
+from Musicreater.utils import (
+    load_decode_msq_flush_release,
+    load_decode_musicsequence_metainfo,
+)
+
+msc_seq = old_init.MusicSequence.from_mido(
+    old_init.mido.MidiFile(
+        "./resources/测试片段.mid",
+    ),
+    "TEST-测试片段",
+)
+
+pprint("音乐源取入成功：")
+pprint(msc_seq)
+
+with open("test.msq", "wb") as f:
+    f.write(msq_bytes := msc_seq.encode_dump())
+
+with open("test.msq", "rb") as f:
+    msc_seq_r = old_init.MusicSequence.load_decode(f.read())
+
+pprint("常规 MSQ 读取成功：")
+pprint(msc_seq_r)
+
+
+with open("test.msq", "rb") as f:
+    pprint("流式 MSQ 元数据：")
+    pprint(metas := load_decode_musicsequence_metainfo(f))
+    pprint("流式 MSQ 音符序列：")
+    for i in load_decode_msq_flush_release(f, metas[-2], metas[-3], metas[-1]):
+        pprint(i)