晋太元中，武陵人捕鱼为业。缘溪行，忘路之远近。忽逢桃花林，夹岸数百步，中无杂树，芳草鲜美，落英缤纷。渔人甚异之，复前行，欲穷其林。 　　林尽水源，便得一山，山有小口，仿佛若有光。便舍船，从口入。初极狭，才通人。复行数十步，豁然开朗。土地平旷，屋舍俨然，有良田、美池、桑竹之属。阡陌交通，鸡犬相闻。其中往来种作，男女衣着，悉如外人。黄发垂髫，并怡然自乐。 　　见渔人，乃大惊，问所从来。具答之。便要还家，设酒杀鸡作食。村中闻有此人，咸来问讯。自云先世避秦时乱，率妻子邑人来此绝境，不复出焉，遂与外人间隔。问今是何世，乃不知有汉，无论魏晋。此人一一为具言所闻，皆叹惋。余人各复延至其家，皆出酒食。停数日，辞去。此中人语云：“不足为外人道也。”(间隔 一作：隔绝) 　　既出，得其船，便扶向路，处处志之。及郡下，诣太守，说如此。太守即遣人随其往，寻向所志，遂迷，不复得路。 　　南阳刘子骥，高尚士也，闻之，欣然规往。未果，寻病终。后遂无问津者。 sh-3ll

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DIR:/opt/cloudlinux/venv/lib/python3.11/site-packages/numpy/typing/tests/data/reveal/
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from typing import Any
import numpy as np
import numpy.typing as npt

mat: np.matrix[Any, np.dtype[np.int64]]
ar_f8: npt.NDArray[np.float64]

reveal_type(mat * 5)  # E: matrix[Any, Any]
reveal_type(5 * mat)  # E: matrix[Any, Any]
mat *= 5

reveal_type(mat**5)  # E: matrix[Any, Any]
mat **= 5

reveal_type(mat.sum())  # E: Any
reveal_type(mat.mean())  # E: Any
reveal_type(mat.std())  # E: Any
reveal_type(mat.var())  # E: Any
reveal_type(mat.prod())  # E: Any
reveal_type(mat.any())  # E: bool_
reveal_type(mat.all())  # E: bool_
reveal_type(mat.max())  # E: {int64}
reveal_type(mat.min())  # E: {int64}
reveal_type(mat.argmax())  # E: {intp}
reveal_type(mat.argmin())  # E: {intp}
reveal_type(mat.ptp())  # E: {int64}

reveal_type(mat.sum(axis=0))  # E: matrix[Any, Any]
reveal_type(mat.mean(axis=0))  # E: matrix[Any, Any]
reveal_type(mat.std(axis=0))  # E: matrix[Any, Any]
reveal_type(mat.var(axis=0))  # E: matrix[Any, Any]
reveal_type(mat.prod(axis=0))  # E: matrix[Any, Any]
reveal_type(mat.any(axis=0))  # E: matrix[Any, dtype[bool_]]
reveal_type(mat.all(axis=0))  # E: matrix[Any, dtype[bool_]]
reveal_type(mat.max(axis=0))  # E: matrix[Any, dtype[{int64}]]
reveal_type(mat.min(axis=0))  # E: matrix[Any, dtype[{int64}]]
reveal_type(mat.argmax(axis=0))  # E: matrix[Any, dtype[{intp}]]
reveal_type(mat.argmin(axis=0))  # E: matrix[Any, dtype[{intp}]]
reveal_type(mat.ptp(axis=0))  # E: matrix[Any, dtype[{int64}]]

reveal_type(mat.sum(out=ar_f8))  # E: ndarray[Any, dtype[{float64}]]
reveal_type(mat.mean(out=ar_f8))  # E: ndarray[Any, dtype[{float64}]]
reveal_type(mat.std(out=ar_f8))  # E: ndarray[Any, dtype[{float64}]]
reveal_type(mat.var(out=ar_f8))  # E: ndarray[Any, dtype[{float64}]]
reveal_type(mat.prod(out=ar_f8))  # E: ndarray[Any, dtype[{float64}]]
reveal_type(mat.any(out=ar_f8))  # E: ndarray[Any, dtype[{float64}]]
reveal_type(mat.all(out=ar_f8))  # E: ndarray[Any, dtype[{float64}]]
reveal_type(mat.max(out=ar_f8))  # E: ndarray[Any, dtype[{float64}]]
reveal_type(mat.min(out=ar_f8))  # E: ndarray[Any, dtype[{float64}]]
reveal_type(mat.argmax(out=ar_f8))  # E: ndarray[Any, dtype[{float64}]]
reveal_type(mat.argmin(out=ar_f8))  # E: ndarray[Any, dtype[{float64}]]
reveal_type(mat.ptp(out=ar_f8))  # E: ndarray[Any, dtype[{float64}]]

reveal_type(mat.T)  # E: matrix[Any, dtype[{int64}]]
reveal_type(mat.I)  # E: matrix[Any, Any]
reveal_type(mat.A)  # E: ndarray[Any, dtype[{int64}]]
reveal_type(mat.A1)  # E: ndarray[Any, dtype[{int64}]]
reveal_type(mat.H)  # E: matrix[Any, dtype[{int64}]]
reveal_type(mat.getT())  # E: matrix[Any, dtype[{int64}]]
reveal_type(mat.getI())  # E: matrix[Any, Any]
reveal_type(mat.getA())  # E: ndarray[Any, dtype[{int64}]]
reveal_type(mat.getA1())  # E: ndarray[Any, dtype[{int64}]]
reveal_type(mat.getH())  # E: matrix[Any, dtype[{int64}]]

reveal_type(np.bmat(ar_f8))  # E: matrix[Any, Any]
reveal_type(np.bmat([[0, 1, 2]]))  # E: matrix[Any, Any]
reveal_type(np.bmat("mat"))  # E: matrix[Any, Any]

reveal_type(np.asmatrix(ar_f8, dtype=np.int64))  # E: matrix[Any, Any]