/
__init__.py
48 lines (33 loc) · 1.05 KB
/
__init__.py
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import itertools
import numpy as np
_counter = itertools.count()
def parameterized(names, params):
def decorator(func):
func.param_names = names
func.params = params
return func
return decorator
def requires_dask():
try:
import dask # noqa: F401
except ImportError:
raise NotImplementedError()
def randn(shape, frac_nan=None, chunks=None, seed=0):
rng = np.random.RandomState(seed)
if chunks is None:
x = rng.standard_normal(shape)
else:
import dask.array as da
rng = da.random.RandomState(seed)
x = rng.standard_normal(shape, chunks=chunks)
if frac_nan is not None:
inds = rng.choice(range(x.size), int(x.size * frac_nan))
x.flat[inds] = np.nan
return x
def randint(low, high=None, size=None, frac_minus=None, seed=0):
rng = np.random.RandomState(seed)
x = rng.randint(low, high, size)
if frac_minus is not None:
inds = rng.choice(range(x.size), int(x.size * frac_minus))
x.flat[inds] = -1
return x