Python numpy 模块，array_equiv() 实例源码
我们从Python开源项目中，提取了以下23个代码示例，用于说明如何使用numpy.array_equiv()。
def test_array_equiv(self):
res = np.array_equiv(np.array([1, 2]), np.array([1, 2]))
assert_(res)
assert_(type(res) is bool)
res = np.array_equiv(np.array([1, 2]), np.array([1, 2, 3]))
assert_(not res)
assert_(type(res) is bool)
res = np.array_equiv(np.array([1, 2]), np.array([3, 4]))
assert_(not res)
assert_(type(res) is bool)
res = np.array_equiv(np.array([1, 2]), np.array([1, 3]))
assert_(not res)
assert_(type(res) is bool)
res = np.array_equiv(np.array([1, 1]), np.array([1]))
assert_(res)
assert_(type(res) is bool)
res = np.array_equiv(np.array([1, 1]), np.array([[1], [1]]))
assert_(res)
assert_(type(res) is bool)
res = np.array_equiv(np.array([1, 2]), np.array([2]))
assert_(not res)
assert_(type(res) is bool)
res = np.array_equiv(np.array([1, 2]), np.array([[1], [2]]))
assert_(not res)
assert_(type(res) is bool)
res = np.array_equiv(np.array([1, 2]), np.array([[1, 2, 3], [4, 5, 6], [7, 8, 9]]))
assert_(not res)
assert_(type(res) is bool)
def test_tri_sym_convert():
from brainiak.utils.utils import from_tri_2_sym, from_sym_2_tri
import numpy as np
sym = np.random.rand(3, 3)
tri = from_sym_2_tri(sym)
assert tri.shape[0] == 6,\
"from_sym_2_tri returned wrong result!"
sym1 = from_tri_2_sym(tri, 3)
assert sym1.shape[0] == sym1.shape[1],\
"from_tri_2_sym returned wrong shape!"
tri1 = from_sym_2_tri(sym1)
assert np.array_equiv(tri, tri1),\
"from_sym_2_tri returned wrong result!"
def test_times_1():
cntk_op = C.times([1, 2, 3], [[4], [5], [6]])
cntk_ret = cntk_op.eval()
ng_op, _ = CNTKImporter().import_model(cntk_op)
ng_ret = ng.transformers.make_transformer().computation(ng_op)()
assert np.array_equiv(cntk_ret, ng_ret)
def test_times_2():
cntk_op = C.times([[1, 2], [3, 4]], [[5, 6], [7, 8]])
cntk_ret = cntk_op.eval()
ng_op, _ = CNTKImporter().import_model(cntk_op)
ng_ret = ng.transformers.make_transformer().computation(ng_op)()
assert np.array_equiv(cntk_ret, ng_ret)
def test_times_3():
cntk_op = C.times([1, 2, 3], [[4, 5], [6, 7], [8, 9]])
cntk_ret = cntk_op.eval()
ng_op, _ = CNTKImporter().import_model(cntk_op)
ng_ret = ng.transformers.make_transformer().computation(ng_op)()
assert np.array_equiv(cntk_ret, ng_ret)
def test_times_4():
cntk_op = C.times([[1, 2, 3], [4, 5, 6]], [[7], [8], [9]])
cntk_ret = cntk_op.eval()
ng_op, _ = CNTKImporter().import_model(cntk_op)
ng_ret = ng.transformers.make_transformer().computation(ng_op)()
assert np.array_equiv(cntk_ret, ng_ret)
def test_times_5():
cntk_op = C.times([[1, 2, 3], [4, 5, 6]], [[7, 8], [9, 10], [11, 12]])
cntk_ret = cntk_op.eval()
ng_op, _ = CNTKImporter().import_model(cntk_op)
ng_ret = ng.transformers.make_transformer().computation(ng_op)()
assert np.array_equiv(cntk_ret, ng_ret)
def _process_sample_weight(self, interactions, sample_weight):
if sample_weight is not None:
if self.loss == 'warp-kos':
raise NotImplementedError('k-OS loss with sample weights '
'not implemented.')
if not isinstance(sample_weight, sp.coo_matrix):
raise ValueError('Sample_weight must be a COO matrix.')
if sample_weight.shape != interactions.shape:
raise ValueError('Sample weight and interactions '
'matrices must be the same shape')
if not (np.array_equal(interactions.row,
sample_weight.row) and
np.array_equal(interactions.col,
sample_weight.col)):
raise ValueError('Sample weight and interaction matrix '
'entries must be in the same order')
if sample_weight.data.dtype != CYTHON_DTYPE:
sample_weight_data = sample_weight.data.astype(CYTHON_DTYPE)
else:
sample_weight_data = sample_weight.data
else:
if np.array_equiv(interactions.data, 1.0):
# Re-use interactions data if they are all
# ones
sample_weight_data = interactions.data
else:
# Otherwise allocate a new array of ones
sample_weight_data = np.ones_like(interactions.data,
dtype=CYTHON_DTYPE)
return sample_weight_data
def test_array_equiv(self):
res = np.array_equiv(np.array([1, 2]), np.array([1, 2]))
assert_(res)
assert_(type(res) is bool)
res = np.array_equiv(np.array([1, 2]), np.array([1, 2, 3]))
assert_(not res)
assert_(type(res) is bool)
res = np.array_equiv(np.array([1, 2]), np.array([3, 4]))
assert_(not res)
assert_(type(res) is bool)
res = np.array_equiv(np.array([1, 2]), np.array([1, 3]))
assert_(not res)
assert_(type(res) is bool)
res = np.array_equiv(np.array([1, 1]), np.array([1]))
assert_(res)
assert_(type(res) is bool)
res = np.array_equiv(np.array([1, 1]), np.array([[1], [1]]))
assert_(res)
assert_(type(res) is bool)
res = np.array_equiv(np.array([1, 2]), np.array([2]))
assert_(not res)
assert_(type(res) is bool)
res = np.array_equiv(np.array([1, 2]), np.array([[1], [2]]))
assert_(not res)
assert_(type(res) is bool)
res = np.array_equiv(np.array([1, 2]), np.array([[1, 2, 3], [4, 5, 6], [7, 8, 9]]))
assert_(not res)
assert_(type(res) is bool)
def test_init(self):
kf = KeyFrame(np.zeros((100, 100)), np.ones((2, 100)))
self.assertTrue(np.array_equiv(kf.image, np.zeros((100, 100))))
self.assertTrue(np.array_equiv(kf.features, np.ones((2, 100))))
def test_serializzation(small_model):
with io.BytesIO() as fileobj:
pickle.dump(small_model, fileobj)
fileobj.seek(0)
loaded = pickle.load(fileobj)
assert all(str(loaded.wv.vocab[w]) == str(small_model.wv.vocab[w]) for w in small_model.wv.vocab)
assert all(str(loaded.lvocab[w]) == str(small_model.lvocab[w]) for w in small_model.lvocab)
assert numpy.array_equiv(loaded.syn1, small_model.syn1)
assert numpy.array_equiv(loaded.wv.syn0, small_model.wv.syn0)
def test_array_equiv(self):
res = np.array_equiv(np.array([1, 2]), np.array([1, 2]))
assert_(res)
assert_(type(res) is bool)
res = np.array_equiv(np.array([1, 2]), np.array([1, 2, 3]))
assert_(not res)
assert_(type(res) is bool)
res = np.array_equiv(np.array([1, 2]), np.array([3, 4]))
assert_(not res)
assert_(type(res) is bool)
res = np.array_equiv(np.array([1, 2]), np.array([1, 3]))
assert_(not res)
assert_(type(res) is bool)
res = np.array_equiv(np.array([1, 1]), np.array([1]))
assert_(res)
assert_(type(res) is bool)
res = np.array_equiv(np.array([1, 1]), np.array([[1], [1]]))
assert_(res)
assert_(type(res) is bool)
res = np.array_equiv(np.array([1, 2]), np.array([2]))
assert_(not res)
assert_(type(res) is bool)
res = np.array_equiv(np.array([1, 2]), np.array([[1], [2]]))
assert_(not res)
assert_(type(res) is bool)
res = np.array_equiv(np.array([1, 2]), np.array([[1, 2, 3], [4, 5, 6], [7, 8, 9]]))
assert_(not res)
assert_(type(res) is bool)
def test_array_equiv(self):
res = np.array_equiv(np.array([1, 2]), np.array([1, 2]))
assert_(res)
assert_(type(res) is bool)
res = np.array_equiv(np.array([1, 2]), np.array([1, 2, 3]))
assert_(not res)
assert_(type(res) is bool)
res = np.array_equiv(np.array([1, 2]), np.array([3, 4]))
assert_(not res)
assert_(type(res) is bool)
res = np.array_equiv(np.array([1, 2]), np.array([1, 3]))
assert_(not res)
assert_(type(res) is bool)
res = np.array_equiv(np.array([1, 1]), np.array([1]))
assert_(res)
assert_(type(res) is bool)
res = np.array_equiv(np.array([1, 1]), np.array([[1], [1]]))
assert_(res)
assert_(type(res) is bool)
res = np.array_equiv(np.array([1, 2]), np.array([2]))
assert_(not res)
assert_(type(res) is bool)
res = np.array_equiv(np.array([1, 2]), np.array([[1], [2]]))
assert_(not res)
assert_(type(res) is bool)
res = np.array_equiv(np.array([1, 2]), np.array([[1, 2, 3], [4, 5, 6], [7, 8, 9]]))
assert_(not res)
assert_(type(res) is bool)
def test_array_equiv(self):
res = np.array_equiv(np.array([1, 2]), np.array([1, 2]))
assert_(res)
assert_(type(res) is bool)
res = np.array_equiv(np.array([1, 2]), np.array([1, 2, 3]))
assert_(not res)
assert_(type(res) is bool)
res = np.array_equiv(np.array([1, 2]), np.array([3, 4]))
assert_(not res)
assert_(type(res) is bool)
res = np.array_equiv(np.array([1, 2]), np.array([1, 3]))
assert_(not res)
assert_(type(res) is bool)
res = np.array_equiv(np.array([1, 1]), np.array([1]))
assert_(res)
assert_(type(res) is bool)
res = np.array_equiv(np.array([1, 1]), np.array([[1], [1]]))
assert_(res)
assert_(type(res) is bool)
res = np.array_equiv(np.array([1, 2]), np.array([2]))
assert_(not res)
assert_(type(res) is bool)
res = np.array_equiv(np.array([1, 2]), np.array([[1], [2]]))
assert_(not res)
assert_(type(res) is bool)
res = np.array_equiv(np.array([1, 2]), np.array([[1, 2, 3], [4, 5, 6], [7, 8, 9]]))
assert_(not res)
assert_(type(res) is bool)
def equality(self):
equal = numpy.array_equiv(self.image_i, self.image_j)
self.assertTrue(equal)
def equality(self):
equal = numpy.array_equiv(self.image_i, self.image_j)
self.assertTrue(equal)
def test_array_equiv(self):
res = np.array_equiv(np.array([1, 2]), np.array([1, 2]))
assert_(res)
assert_(type(res) is bool)
res = np.array_equiv(np.array([1, 2]), np.array([1, 2, 3]))
assert_(not res)
assert_(type(res) is bool)
res = np.array_equiv(np.array([1, 2]), np.array([3, 4]))
assert_(not res)
assert_(type(res) is bool)
res = np.array_equiv(np.array([1, 2]), np.array([1, 3]))
assert_(not res)
assert_(type(res) is bool)
res = np.array_equiv(np.array([1, 1]), np.array([1]))
assert_(res)
assert_(type(res) is bool)
res = np.array_equiv(np.array([1, 1]), np.array([[1], [1]]))
assert_(res)
assert_(type(res) is bool)
res = np.array_equiv(np.array([1, 2]), np.array([2]))
assert_(not res)
assert_(type(res) is bool)
res = np.array_equiv(np.array([1, 2]), np.array([[1], [2]]))
assert_(not res)
assert_(type(res) is bool)
res = np.array_equiv(np.array([1, 2]), np.array([[1, 2, 3], [4, 5, 6], [7, 8, 9]]))
assert_(not res)
assert_(type(res) is bool)
def array_equal(a1, a2):
"""
True if two arrays have the same shape and elements, False otherwise.
Parameters
----------
a1, a2 : array_like
Input arrays.
Returns
-------
b : bool
Returns True if the arrays are equal.
See Also
--------
allclose: Returns True if two arrays are element-wise equal within a
tolerance.
array_equiv: Returns True if input arrays are shape consistent and all
elements equal.
Examples
--------
>>> np.array_equal([1, 2], [1, 2])
True
>>> np.array_equal(np.array([1, 2]), np.array([1, 2]))
True
>>> np.array_equal([1, 2], [1, 2, 3])
False
>>> np.array_equal([1, 2], [1, 4])
False
"""
try:
a1, a2 = asarray(a1), asarray(a2)
except:
return False
if a1.shape != a2.shape:
return False
return bool(asarray(a1 == a2).all())
def arr_equiv():
ar1 = np.array([[1, 2], [3, 4]])
ar2 = np.array([[1, 2]])
ar3 = np.array([[1, 2], [1, 2]])
ar4 = np.array([1, 2])
print np.array_equiv(ar1, ar2)
# False
print np.array_equiv(ar1, ar4)
# False
print np.array_equiv(ar2, ar3)
# True
def test_array_equiv(self):
res = np.array_equiv(np.array([1, 2]), np.array([1, 2]))
assert_(res)
assert_(type(res) is bool)
res = np.array_equiv(np.array([1, 2]), np.array([1, 2, 3]))
assert_(not res)
assert_(type(res) is bool)
res = np.array_equiv(np.array([1, 2]), np.array([3, 4]))
assert_(not res)
assert_(type(res) is bool)
res = np.array_equiv(np.array([1, 2]), np.array([1, 3]))
assert_(not res)
assert_(type(res) is bool)
res = np.array_equiv(np.array([1, 1]), np.array([1]))
assert_(res)
assert_(type(res) is bool)
res = np.array_equiv(np.array([1, 1]), np.array([[1], [1]]))
assert_(res)
assert_(type(res) is bool)
res = np.array_equiv(np.array([1, 2]), np.array([2]))
assert_(not res)
assert_(type(res) is bool)
res = np.array_equiv(np.array([1, 2]), np.array([[1], [2]]))
assert_(not res)
assert_(type(res) is bool)
res = np.array_equiv(np.array([1, 2]), np.array([[1, 2, 3], [4, 5, 6], [7, 8, 9]]))
assert_(not res)
assert_(type(res) is bool)
def preprocess(self, **kwargs):
"""Construct kernel distance arrays."""
new_times = np.array(kwargs.get('all_times', []), dtype=float)
self._codeltatime = kwargs.get(self.key('codeltatime'), -1)
self._codeltalambda = kwargs.get(self.key('codeltalambda'), -1)
if np.array_equiv(new_times, self._times) and self._preprocessed:
return
self._times = new_times
self._all_band_indices = kwargs.get('all_band_indices', [])
self._are_bands = np.array(self._all_band_indices) >= 0
self._freqs = kwargs.get('all_frequencies', [])
self._u_freqs = kwargs.get('all_u_frequencies', [])
self._waves = np.array([
self._average_wavelengths[bi] if bi >= 0 else
C_CGS / self._freqs[i] / ANG_CGS for i, bi in
enumerate(self._all_band_indices)])
self._observed = np.array(kwargs.get('observed', []), dtype=bool)
self._n_obs = len(self._observed)
self._o_times = self._times[self._observed]
self._o_waves = self._waves[self._observed]
if self._type == 'full':
self._times_1 = self._times
self._times_2 = self._times
self._waves_1 = self._waves
self._waves_2 = self._waves
elif self._type == 'oa':
self._times_1 = self._o_times
self._times_2 = self._times
self._waves_1 = self._o_waves
self._waves_2 = self._waves
elif self._type == 'ao':
self._times_1 = self._times
self._times_2 = self._o_times
self._waves_1 = self._waves
self._waves_2 = self._o_waves
else:
self._times_1 = self._o_times
self._times_2 = self._o_times
self._waves_1 = self._o_waves
self._waves_2 = self._o_waves
# Time deltas (radial distance) for covariance matrix.
if self._codeltatime >= 0:
self._dt2mat = self._times_1[:, None] - self._times_2[None, :]
self._dt2mat **= 2
self._dt2mat *= -0.5
# Wavelength deltas (radial distance) for covariance matrix.
if self._codeltalambda >= 0:
self._dl2mat = self._waves_1[:, None] - self._waves_2[None, :]
self._dl2mat **= 2
self._dl2mat *= -0.5
self._preprocessed = True
def array_equiv(a1, a2):
"""
Returns True if input arrays are shape consistent and all elements equal.
Shape consistent means they are either the same shape, or one input array
can be broadcasted to create the same shape as the other one.
Parameters
----------
a1, a2 : array_like
Input arrays.
Returns
-------
out : bool
True if equivalent, False otherwise.
Examples
--------
>>> np.array_equiv([1, 2], [1, 2])
True
>>> np.array_equiv([1, 2], [1, 3])
False
Showing the shape equivalence:
>>> np.array_equiv([1, 2], [[1, 2], [1, 2]])
True
>>> np.array_equiv([1, 2], [[1, 2, 1, 2], [1, 2, 1, 2]])
False
>>> np.array_equiv([1, 2], [[1, 2], [1, 3]])
False
"""
try:
a1, a2 = asarray(a1), asarray(a2)
except:
return False
try:
multiarray.broadcast(a1, a2)
except:
return False
return bool(asarray(a1 == a2).all())
def parse_array(self, ar):
"""
Consolidate an array to something smaller and remains
broadcastable to the original dimensions. ndim remains the same.
todo:
- if squeezable in multiple dimensions, squeeze in all dimensions.
it currently does this, but the entire most_squeezable_dim can be
left out.
:param ar: array to be parsed
:return: consolidated array
"""
assert isinstance(ar, np.ndarray)
output = np.unique(ar)
if output.size == 1:
return 0, output.item()
elif output.size == 0:
return -1, output
else:
items_per_squeezed_dim = ar.ndim * [0]
for dim in range(ar.ndim):
output, index = uniquend(ar, axis=dim, return_index=True)
if len(index) == 1:
items_per_squeezed_dim[dim] = output.size
else:
items_per_squeezed_dim[dim] = ar.size
most_squeezable_dim = items_per_squeezed_dim.index(
min(items_per_squeezed_dim))
if ar.size == items_per_squeezed_dim[most_squeezable_dim]:
return -1, ar
else:
# can be squeezable in multiple dimensions
# therefore call self
cur = uniquend(ar, axis=most_squeezable_dim)
# test if broadcastable shape, same elements values
assert np.array_equiv(ar, cur)
return 1, self.parse_array(cur)[1]