python: ensure utf8 encoding when writing dot file (#4225)

pola-rs · Aug 2, 2022 · eb46056 · eb46056
1 parent 0997c29
commit eb46056
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/py-polars/polars/internals/lazy_frame.py b/py-polars/polars/internals/lazy_frame.py
@@ -512,7 +512,7 @@ def show_graph(
             return dot
         with tempfile.TemporaryDirectory() as tmpdir_name:
             dot_path = os.path.join(tmpdir_name, "dot")
-            with open(dot_path, "w") as f:
+            with open(dot_path, "w", encoding="utf8") as f:
                 f.write(dot)
 
             subprocess.run(["dot", "-Nshape=box", "-Tpng", "-O", dot_path])