99 lines
3.6 KiB
Python
99 lines
3.6 KiB
Python
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#
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# Licensed to the Apache Software Foundation (ASF) under one or more
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# contributor license agreements. See the NOTICE file distributed with
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# this work for additional information regarding copyright ownership.
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# The ASF licenses this file to You under the Apache License, Version 2.0
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# (the "License"); you may not use this file except in compliance with
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# 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, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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#
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header = """#
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# Licensed to the Apache Software Foundation (ASF) under one or more
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# contributor license agreements. See the NOTICE file distributed with
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# this work for additional information regarding copyright ownership.
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# The ASF licenses this file to You under the Apache License, Version 2.0
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# (the "License"); you may not use this file except in compliance with
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# 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, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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#"""
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def _gen_param_code(name, doc, defaultValue):
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"""
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Generates Python code for a shared param class.
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:param name: param name
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:param doc: param doc
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:param defaultValue: string representation of the param
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:return: code string
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"""
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# TODO: How to correctly inherit instance attributes?
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template = '''class Has$Name(Params):
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"""
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Params with $name.
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"""
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# a placeholder to make it appear in the generated doc
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$name = Param(Params._dummy(), "$name", "$doc", $defaultValue)
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def __init__(self):
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super(Has$Name, self).__init__()
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#: param for $doc
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self.$name = Param(self, "$name", "$doc", $defaultValue)
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def set$Name(self, value):
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"""
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Sets the value of :py:attr:`$name`.
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"""
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self.paramMap[self.$name] = value
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return self
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def get$Name(self):
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"""
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Gets the value of $name or its default value.
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"""
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if self.$name in self.paramMap:
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return self.paramMap[self.$name]
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else:
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return self.$name.defaultValue'''
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upperCamelName = name[0].upper() + name[1:]
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return template \
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.replace("$name", name) \
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.replace("$Name", upperCamelName) \
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.replace("$doc", doc) \
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.replace("$defaultValue", defaultValue)
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if __name__ == "__main__":
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print header
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print "\n# DO NOT MODIFY. The code is generated by _gen_shared_params.py.\n"
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print "from pyspark.ml.param import Param, Params\n\n"
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shared = [
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("maxIter", "max number of iterations", "100"),
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("regParam", "regularization constant", "0.1"),
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("featuresCol", "features column name", "'features'"),
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("labelCol", "label column name", "'label'"),
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("predictionCol", "prediction column name", "'prediction'"),
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("inputCol", "input column name", "'input'"),
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("outputCol", "output column name", "'output'"),
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("numFeatures", "number of features", "1 << 18")]
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code = []
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for name, doc, defaultValue in shared:
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code.append(_gen_param_code(name, doc, defaultValue))
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print "\n\n\n".join(code)
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