26 lines
795 B
Python
26 lines
795 B
Python
"""A 股代码归一化。支持 6 位纯数字或带交易所后缀（000001 / 000001.SZ）。"""
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from __future__ import annotations
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def plain_code(code: str) -> str:
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"""000001.SZ -> 000001"""
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return code.strip().upper().split(".")[0]
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def to_ts_code(code: str) -> str:
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"""转 Tushare ts_code（带交易所后缀）。"""
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c = code.strip().upper()
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if "." in c:
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return c
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c = plain_code(c)
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# 沪市：60xxxx 主板、68xxxx 科创、9xxxxx B 股
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if c.startswith(("60", "68", "9")):
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return c + ".SH"
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# 深市：00xxxx 主板/中小、30xxxx 创业、20xxxx B 股
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if c.startswith(("00", "30", "20")):
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return c + ".SZ"
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# 北交所：8xxxxx / 4xxxxx
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if c.startswith(("8", "4")):
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return c + ".BJ"
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return c + ".SZ"
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