30 lines
1.0 KiB
Python
30 lines
1.0 KiB
Python
"""客户 C 级与产品 R 级的公共适当性校验。"""
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from __future__ import annotations
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from dataclasses import dataclass
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import re
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@dataclass(frozen=True)
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class SuitabilityResult:
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ok: bool
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reason: str
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_RISK_PATTERN = re.compile(r"^[CR]([1-5])$")
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def check_suitability(customer_risk: str, product_risk: str) -> SuitabilityResult:
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customer_match = _RISK_PATTERN.fullmatch(customer_risk or "")
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product_match = _RISK_PATTERN.fullmatch(product_risk or "")
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if not customer_match or not product_match:
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return SuitabilityResult(False, "客户或产品风险等级无效")
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if customer_risk[0] != "C" or product_risk[0] != "R":
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return SuitabilityResult(False, "客户或产品风险等级类型无效")
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customer_level = int(customer_match.group(1))
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product_level = int(product_match.group(1))
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if product_level > customer_level:
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return SuitabilityResult(False, "产品风险等级高于客户风险等级")
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return SuitabilityResult(True, "适当性校验通过")
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