import argparse
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import dataclasses
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from typeguard import check_type
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def build_dataclass(dataclass, args: argparse.Namespace):
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"""Helper function to build dataclass from 'args'."""
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kwargs = {}
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for field in dataclasses.fields(dataclass):
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if not hasattr(args, field.name):
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raise ValueError(
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f"args doesn't have {field.name}. You need to set it to ArgumentsParser"
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)
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check_type(field.name, getattr(args, field.name), field.type)
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kwargs[field.name] = getattr(args, field.name)
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return dataclass(**kwargs)
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