1 files changed, 8 insertions, 1 deletions
diff --git a/Lib/zipfile.py b/Lib/zipfile.py
index 8e9325b..41bf49a 100644
--- a/Lib/zipfile.py
+++ b/Lib/zipfile.py
@@ -1147,8 +1147,15 @@ class _ZipWriteFile(io.BufferedIOBase):
     def write(self, data):
         if self.closed:
             raise ValueError('I/O operation on closed file.')
-        nbytes = len(data)
+
+        # Accept any data that supports the buffer protocol
+        if isinstance(data, (bytes, bytearray)):
+            nbytes = len(data)
+        else:
+            data = memoryview(data)
+            nbytes = data.nbytes
         self._file_size += nbytes
+
         self._crc = crc32(data, self._crc)
         if self._compressor:
             data = self._compressor.compress(data)