keep TList _options as python bytes and update serialization to…

… use the new `bytestring` helper
scikit-hep · Oct 25, 2022 · 8e6ad2e · 8e6ad2e
1 parent 0621c67
commit 8e6ad2e
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Showing 2 changed files with 2 additions and 2 deletions.
diff --git a/src/uproot/models/TList.py b/src/uproot/models/TList.py
@@ -106,7 +106,7 @@ def _serialize(self, out, header, name, tobject_flags):
 
         for datum, option in zip(self._data, self._options):
             uproot.serialization._serialize_object_any(out, datum, None)
-            out.append(uproot.serialization.string(option))
+            out.append(uproot.serialization.bytestring(option))
 
         if header:
             num_bytes = sum(len(x) for x in out[where:])

diff --git a/src/uproot/writing/identify.py b/src/uproot/writing/identify.py
@@ -769,7 +769,7 @@ def to_TList(data, name=""):
     tlist._members["fName"] = name
     tlist._data = list(data)
     tlist._members["fSize"] = len(tlist._data)
-    tlist._options = [""] * len(tlist._data)
+    tlist._options = [b""] * len(tlist._data)
 
     if all(x._deeply_writable for x in tlist._data):
         tlist._deeply_writable = True