37 行
858 B
Python
37 行
858 B
Python
import string
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import numpy as np
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def randbool(size=(), p: float = 0.5):
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return np.random.rand(*size) <= p
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RANDS_CHARS = np.array(list(string.ascii_letters + string.digits), dtype=(np.str_, 1))
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RANDU_CHARS = np.array(
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list("".join(map(chr, range(1488, 1488 + 26))) + string.digits),
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dtype=(np.unicode_, 1),
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)
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def rands_array(nchars, size, dtype="O", replace=True) -> np.ndarray:
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"""
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Generate an array of byte strings.
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"""
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retval = (
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np.random.choice(RANDS_CHARS, size=nchars * np.prod(size), replace=replace)
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.view((np.str_, nchars))
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.reshape(size)
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)
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return retval.astype(dtype)
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def rands(nchars) -> str:
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"""
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Generate one random byte string.
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See `rands_array` if you want to create an array of random strings.
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"""
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return "".join(np.random.choice(RANDS_CHARS, nchars))
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