30 lines
710 B
Python
30 lines
710 B
Python
import string
|
|
|
|
import numpy as np
|
|
|
|
from pandas._typing import NpDtype
|
|
|
|
RANDS_CHARS = np.array(list(string.ascii_letters + string.digits), dtype=(np.str_, 1))
|
|
|
|
|
|
def rands_array(nchars, size, dtype: NpDtype = "O", replace: bool = True) -> np.ndarray:
|
|
"""
|
|
Generate an array of byte strings.
|
|
"""
|
|
retval = (
|
|
np.random.choice(RANDS_CHARS, size=nchars * np.prod(size), replace=replace)
|
|
.view((np.str_, nchars))
|
|
.reshape(size)
|
|
)
|
|
return retval.astype(dtype)
|
|
|
|
|
|
def rands(nchars) -> str:
|
|
"""
|
|
Generate one random byte string.
|
|
|
|
See `rands_array` if you want to create an array of random strings.
|
|
|
|
"""
|
|
return "".join(np.random.choice(RANDS_CHARS, nchars))
|