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GitHubandClaude Opus 4.8
4dfd18050e
- pyproject.toml: add mypy overrides for pandas/tabulate/matplotlib stubs, disable strict checking for vendored MyTT library - config.py: use cast() for dict[str, Any] .get() returns - beichi.py: widen _calc_bi_force param to BI | XD, import XD - backtest/cli.py: split combo/single strategy into separate typed variables - backtest/combo.py: add bool_array() helper for numpy return types - chanlun/analyser.py: type ignore for pandas row access, fix dict type arg - unified.py: change fields param from object to Any - ex/mac_client.py: add type args to list literals - cli/cmd_offline.py: wrap int market as Market enum before API call - cli/cmd_chanlun.py: fix dict type arg - offline/write_*.py: explicit int() cast for struct.unpack returns - MyTT.py: fix line-too-long comments, UP038 isinstance syntax - tests: fix E712 (==False → ~mask), E741 (noqa), F841, import sorting - ruff format applied across codebase Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
57 lines
1.4 KiB
Python
57 lines
1.4 KiB
Python
"""通达信 4 字节自定义浮点格式解码（成交量专用）。
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格式：4 字节小端 uint32，分三段：
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[3] logpoint — 指数部分
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[2] hleax — 高精度部分
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[1] lheax — 中精度部分
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[0] lleax — 低精度部分
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警告：此函数专为成交量设计，不可用于价格字段（pytdx Bug #3）。
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"""
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from .._binary import unpack_from
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def get_volume(data: bytes | bytearray, pos: int) -> tuple[float, int]:
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"""从 data[pos:pos+4] 解码成交量。
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Returns:
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(volume_float, new_pos)
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"""
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(ivol,) = unpack_from("<I", data, pos, "volume")
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return _decode_volume(ivol), pos + 4
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def _decode_volume(ivol: int) -> float:
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if ivol == 0:
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return 0.0
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logpoint = (ivol >> 24) & 0xFF
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hleax = (ivol >> 16) & 0xFF
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lheax = (ivol >> 8) & 0xFF
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lleax = ivol & 0xFF
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exp = logpoint * 2 - 0x7F
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base = _pow2(exp)
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exp_h = logpoint * 2 - 0x86
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if hleax > 0x80:
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hi = _pow2(exp_h) * 128 + (hleax & 0x7F) * _pow2(exp_h + 1)
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else:
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hi = _pow2(exp_h) * hleax
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mid = _pow2(logpoint * 2 - 0x8E) * lheax
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lo = _pow2(logpoint * 2 - 0x96) * lleax
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if hleax & 0x80:
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mid *= 2.0
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lo *= 2.0
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return base + hi + mid + lo
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def _pow2(exp: int) -> float:
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if exp >= 0:
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return float(1 << exp) if exp < 63 else 2.0**exp
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return 1.0 / (1 << (-exp)) if -exp < 63 else 2.0**exp
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