zero323 commented on a change in pull request #29122:
URL: https://github.com/apache/spark/pull/29122#discussion_r508823684
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File path: python/pyspark/sql/functions.py
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@@ -2476,7 +2478,7 @@ def json_tuple(col, *fields):
@since(2.1)
-def from_json(col, schema, options={}):
+def from_json(col, schema, options=None):
Review comment:
Same as for `sql.avro.functions`, we'll need here `Optional[Dict[str,
str]]` (applies also to the remaining functions).
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