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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import numpy as np
import numpy.typing as npt

AR_f8: npt.NDArray[np.float64] = np.array([1.0])
AR_i4 = np.array([1], dtype=np.int32)
AR_u1 = np.array([1], dtype=np.uint8)

AR_LIKE_f = [1.5]
AR_LIKE_i = [1]

b_f8 = np.broadcast(AR_f8)
b_i4_f8_f8 = np.broadcast(AR_i4, AR_f8, AR_f8)

next(b_f8)
b_f8.reset()
b_f8.index
b_f8.iters
b_f8.nd
b_f8.ndim
b_f8.numiter
b_f8.shape
b_f8.size

next(b_i4_f8_f8)
b_i4_f8_f8.reset()
b_i4_f8_f8.ndim
b_i4_f8_f8.index
b_i4_f8_f8.iters
b_i4_f8_f8.nd
b_i4_f8_f8.numiter
b_i4_f8_f8.shape
b_i4_f8_f8.size

np.inner(AR_f8, AR_i4)

np.where([True, True, False])
np.where([True, True, False], 1, 0)

np.lexsort([0, 1, 2])

np.can_cast(np.dtype("i8"), int)
np.can_cast(AR_f8, "f8")
np.can_cast(AR_f8, np.complex128, casting="unsafe")

np.min_scalar_type([1])
np.min_scalar_type(AR_f8)

np.result_type(int, AR_i4)
np.result_type(AR_f8, AR_u1)
np.result_type(AR_f8, np.complex128)

np.dot(AR_LIKE_f, AR_i4)
np.dot(AR_u1, 1)
np.dot(1.5j, 1)
np.dot(AR_u1, 1, out=AR_f8)

np.vdot(AR_LIKE_f, AR_i4)
np.vdot(AR_u1, 1)
np.vdot(1.5j, 1)

np.bincount(AR_i4)

np.copyto(AR_f8, [1.6])

np.putmask(AR_f8, [True], 1.5)

np.packbits(AR_i4)
np.packbits(AR_u1)

np.unpackbits(AR_u1)

np.shares_memory(1, 2)
np.shares_memory(AR_f8, AR_f8, max_work=1)

np.may_share_memory(1, 2)
np.may_share_memory(AR_f8, AR_f8, max_work=1)