python source code of

import string

import numpy as np
from hypothesis import strategies as st
from hypothesis.extra.numpy import arrays, array_shapes


def _strategy_2d_array(dtype, minval=0, maxval=None, **kwargs):
    if 'min_side' in kwargs:
        min_side = kwargs.pop('min_side')
    else:
        min_side = 1

    if 'max_side' in kwargs:
        max_side = kwargs.pop('max_side')
    else:
        max_side = None

    if dtype is np.int:
        elems = st.integers(minval, maxval, **kwargs)
    elif dtype is np.float:
        elems = st.floats(minval, maxval, **kwargs)
    elif dtype is np.str:
        elems = st.text(min_size=minval, max_size=maxval, **kwargs)
    else:
        raise ValueError('no elements strategy for dtype', dtype)

    return arrays(dtype, array_shapes(2, 2, min_side, max_side), elements=elems)


def strategy_dtm():
    return _strategy_2d_array(np.int, 0, 10000)


def strategy_dtm_small():
    return _strategy_2d_array(np.int, 0, 10, min_side=2, max_side=10)


def strategy_2d_prob_distribution():
    return _strategy_2d_array(np.float, 0, 1, allow_nan=False, allow_infinity=False)


def strategy_tokens(*args, **kwargs):
    return st.lists(st.lists(st.text(*args, **kwargs)))


def strategy_texts(*args, **kwargs):
    return st.lists(st.text(*args, **kwargs))


def strategy_texts_printable(*args, **kwargs):
    return strategy_texts(string.printable)