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This is bad practice, and might lead to unexpected behaviour: https://florimond.dev/blog/articles/2018/08/python-mutable-defaults-are-the-source-of-all-evil/ ``` fokkodriesprongFan spark % grep -R "={}" python | grep def python/pyspark/resource/profile.py: def __init__(self, _java_resource_profile=None, _exec_req={}, _task_req={}): python/pyspark/sql/functions.py:def from_json(col, schema, options={}): python/pyspark/sql/functions.py:def to_json(col, options={}): python/pyspark/sql/functions.py:def schema_of_json(json, options={}): python/pyspark/sql/functions.py:def schema_of_csv(csv, options={}): python/pyspark/sql/functions.py:def to_csv(col, options={}): python/pyspark/sql/functions.py:def from_csv(col, schema, options={}): python/pyspark/sql/avro/functions.py:def from_avro(data, jsonFormatSchema, options={}): ``` ``` fokkodriesprongFan spark % grep -R "=\[\]" python | grep def python/pyspark/ml/tuning.py: def __init__(self, bestModel, avgMetrics=[], subModels=None): python/pyspark/ml/tuning.py: def __init__(self, bestModel, validationMetrics=[], subModels=None): ``` ### What changes were proposed in this pull request? Removing the mutable default arguments. ### Why are the changes needed? Removing the mutable default arguments, and changing the signature to `Optional[...]`. ### Does this PR introduce _any_ user-facing change? No 👍 ### How was this patch tested? Using the Flake8 bugbear code analysis plugin. Closes #29122 from Fokko/SPARK-32320. Authored-by: Fokko Driesprong <fokko@apache.org> Signed-off-by: Ruifeng Zheng <ruifengz@foxmail.com>
28 lines
1.1 KiB
Python
28 lines
1.1 KiB
Python
#
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# Licensed to the Apache Software Foundation (ASF) under one
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# or more contributor license agreements. See the NOTICE file
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# distributed with this work for additional information
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# regarding copyright ownership. The ASF licenses this file
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# to you under the Apache License, Version 2.0 (the
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# "License"); you may not use this file except in compliance
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# with the License. You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing,
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# software distributed under the License is distributed on an
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# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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# KIND, either express or implied. See the License for the
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# specific language governing permissions and limitations
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# under the License.
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from typing import Dict, Optional
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from pyspark.sql._typing import ColumnOrName
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from pyspark.sql.column import Column
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def from_avro(
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data: ColumnOrName, jsonFormatSchema: str, options: Optional[Dict[str, str]] = ...
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) -> Column: ...
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def to_avro(data: ColumnOrName, jsonFormatSchema: str = ...) -> Column: ...
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