1 files changed, 2 insertions, 0 deletions
diff --git a/Lib/wave.py b/Lib/wave.py
index 3d01817afd..7de1cd0f88 100644
--- a/Lib/wave.py
+++ b/Lib/wave.py
@@ -435,6 +435,8 @@ class Wave_write:
         return self._nframeswritten
 
     def writeframesraw(self, data):
+        if not isinstance(data, (bytes, bytearray)):
+            data = memoryview(data).cast('B')
         self._ensure_header_written(len(data))
         nframes = len(data) // (self._sampwidth * self._nchannels)
         if self._convert: