def test_max(self):
# Sanity check of reduction op
self.assertEqual(ddesc_as_py(blaze.eval(blaze.max(5)).ddesc), 5)
self.assertRaises(ValueError, blaze.eval, blaze.max([]))
self.assertEqual(ddesc_as_py(blaze.eval(blaze.max([3, -2])).ddesc), 3)
self.assertEqual(ddesc_as_py(blaze.eval(blaze.max([1.5, 2.0])).ddesc),
2.0)
def test_ragged(self):
a = blaze.array([[1], [2, 3], [4, 5, 6]])
b = blaze.array([[1, 2, 3], [4, 5], [6]])
c = blaze.eval(a + b)
self.assertEqual(dd_as_py(c._data), [[2, 3, 4], [6, 8], [10, 11, 12]])
c = blaze.eval(2 * a - b)
self.assertEqual(dd_as_py(c._data), [[1, 0, -1], [0, 1], [2, 4, 6]])
def test_product(self):
# Sanity check of reduction op
self.assertEqual(ddesc_as_py(blaze.eval(blaze.product(5)).ddesc), 5)
self.assertEqual(ddesc_as_py(blaze.eval(blaze.product([])).ddesc), 1)
self.assertEqual(ddesc_as_py(blaze.eval(blaze.product([3, -2])).ddesc),
-6)
self.assertEqual(ddesc_as_py(blaze.eval(blaze.product([1.5, 2.0])).ddesc),
3.0)
def test_max(self):
# Sanity check of reduction op
self.assertEqual(ddesc_as_py(blaze.eval(blaze.max(5)).ddesc), 5)
self.assertRaises(ValueError, blaze.eval, blaze.max([]))
self.assertEqual(ddesc_as_py(blaze.eval(blaze.max([3, -2])).ddesc),
3)
self.assertEqual(ddesc_as_py(blaze.eval(blaze.max([1.5, 2.0])).ddesc),
2.0)
def test_add(self):
types = ['int8', 'int16', 'int32', 'int64']
for type_ in types:
a = blaze.array(range(3), dshape=type_)
c = blaze.eval(a+a)
self.assertEqual(dd_as_py(c._data), [0, 2, 4])
c = blaze.eval(((a+a)*a))
self.assertEqual(dd_as_py(c._data), [0, 2, 8])
def test_product(self):
# Sanity check of reduction op
self.assertEqual(ddesc_as_py(blaze.eval(blaze.product(5)).ddesc), 5)
self.assertEqual(ddesc_as_py(blaze.eval(blaze.product([])).ddesc), 1)
self.assertEqual(ddesc_as_py(blaze.eval(blaze.product([3, -2])).ddesc),
-6)
self.assertEqual(
ddesc_as_py(blaze.eval(blaze.product([1.5, 2.0])).ddesc), 3.0)
def test_add(self):
types = ['int8', 'int16', 'int32', 'int64']
for type_ in types:
a = blaze.array(range(3), dshape=type_)
c = blaze.eval(a + a)
self.assertEqual(ddesc_as_py(c.ddesc), [0, 2, 4])
c = blaze.eval(((a + a) * a))
self.assertEqual(ddesc_as_py(c.ddesc), [0, 2, 8])
def test_ragged(self):
a = blaze.array([[1], [2, 3], [4, 5, 6]])
b = blaze.array([[1, 2, 3], [4, 5], [6]])
c = blaze.eval(a + b)
self.assertEqual(dd_as_py(c._data),
[[2, 3, 4], [6, 8], [10, 11, 12]])
c = blaze.eval(2 * a - b)
self.assertEqual(dd_as_py(c._data),
[[1, 0, -1], [0, 1], [2, 4, 6]])
def test_any(self):
# Sanity check of reduction op
self.assertEqual(ddesc_as_py(blaze.eval(blaze.any(True)).ddesc), True)
self.assertEqual(ddesc_as_py(blaze.eval(blaze.any(False)).ddesc), False)
self.assertEqual(ddesc_as_py(blaze.eval(blaze.any(blaze.array([], dshape='0 * bool'))).ddesc), False)
self.assertEqual(ddesc_as_py(blaze.eval(blaze.any([False, True])).ddesc),
True)
self.assertEqual(ddesc_as_py(blaze.eval(blaze.any([False, False])).ddesc),
False)
def test_all(self):
# Sanity check of reduction op
self.assertEqual(dd_as_py(blaze.eval(blaze.all(True))._data), True)
self.assertEqual(dd_as_py(blaze.eval(blaze.all(False))._data), False)
self.assertEqual(dd_as_py(blaze.eval(blaze.all(blaze.array([], dshape='0 * bool')))._data), True)
self.assertEqual(dd_as_py(blaze.eval(blaze.all([False, True]))._data),
False)
self.assertEqual(dd_as_py(blaze.eval(blaze.all([True, True]))._data),
True)
def test_overload(self):
myfunc = create_overloaded_add()
# Test int32 overload -> add
a = blaze.eval(myfunc(blaze.array([3,4]), blaze.array([1,2])))
self.assertEqual(a.dshape, blaze.dshape('2, int32'))
self.assertEqual(nd.as_py(a._data.dynd_arr()), [4, 6])
# Test int16 overload -> subtract
a = blaze.eval(myfunc(blaze.array([3,4], dshape='int16'),
blaze.array([1,2], dshape='int16')))
self.assertEqual(a.dshape, blaze.dshape('2, int16'))
self.assertEqual(nd.as_py(a._data.dynd_arr()), [2, 2])
def test_overload(self):
myfunc = create_overloaded_add()
# Test int32 overload -> add
a = blaze.eval(myfunc(blaze.array([3, 4]), blaze.array([1, 2])))
self.assertEqual(a.dshape, dshape('2 * int32'))
self.assertEqual(nd.as_py(a.ddesc.dynd_arr()), [4, 6])
# Test int16 overload -> subtract
a = blaze.eval(myfunc(blaze.array([3, 4], dshape='int16'),
blaze.array([1, 2], dshape='int16')))
self.assertEqual(a.dshape, dshape('2 * int16'))
self.assertEqual(nd.as_py(a.ddesc.dynd_arr()), [2, 2])
def test_sum_zerosize(self):
# Empty sum operations should produce 0, the reduction identity
self.assertEqual(ddesc_as_py(blaze.eval(blaze.sum([])).ddesc), 0)
self.assertEqual(ddesc_as_py(blaze.eval(blaze.sum([],
keepdims=True)).ddesc),
[0])
self.assertEqual(ddesc_as_py(blaze.eval(blaze.sum([[], []])).ddesc), 0)
self.assertEqual(ddesc_as_py(blaze.eval(blaze.sum([[], []],
keepdims=True)).ddesc),
[[0]])
self.assertEqual(ddesc_as_py(blaze.eval(blaze.sum([[], []],
axis=-1)).ddesc),
[0, 0])
self.assertEqual(ddesc_as_py(blaze.eval(blaze.sum([[], []],
axis=-1,
keepdims=True)).ddesc),
[[0], [0]])
# If we're only reducing on a non-empty dimension, we might still
# end up with zero-sized outputs
self.assertEqual(ddesc_as_py(blaze.eval(blaze.sum([[], []],
axis=0)).ddesc),
[])
self.assertEqual(ddesc_as_py(blaze.eval(blaze.sum([[], []],
axis=0,
keepdims=True)).ddesc),
[[]])
def test_any(self):
# Sanity check of reduction op
self.assertEqual(ddesc_as_py(blaze.eval(blaze.any(True)).ddesc), True)
self.assertEqual(ddesc_as_py(blaze.eval(blaze.any(False)).ddesc),
False)
self.assertEqual(
ddesc_as_py(
blaze.eval(blaze.any(blaze.array([],
dshape='0 * bool'))).ddesc),
False)
self.assertEqual(
ddesc_as_py(blaze.eval(blaze.any([False, True])).ddesc), True)
self.assertEqual(
ddesc_as_py(blaze.eval(blaze.any([False, False])).ddesc), False)
def function(self):
A = getattr(self, storage1 + 'A')
B = getattr(self, storage2 + 'B')
Rd = kernel(A, B)
self.assert_(isinstance(Rd, blaze.Array))
self.assert_(Rd._data.capabilities.deferred)
p = _store(storage3 + 'Rd') if storage3 == 'dsk' else None
try:
Rc = blaze.eval(Rd, storage=p)
self.assert_(isinstance(Rc, blaze.Array))
npy_data = getattr(self, 'npy' + R)
assert_allclose(np.array(dd_as_py(Rc._data)), npy_data)
if storage3 == 'dsk':
self.assert_(Rc._data.capabilities.persistent)
else:
self.assert_(not Rc._data.capabilities.persistent)
finally:
try:
if p is not None:
blaze.drop(p)
except:
pass # show the real error...
def test_exec_promotion(self):
expr = make_expr(dshape('10, int32'), dshape('10, float32'))
result = blaze.eval(expr)
expected = blaze.array([ 0, 2, 6, 12, 20, 30, 42, 56, 72, 90],
dshape=dshape('10, float64'))
self.assertEqual(type(result), blaze.Array)
self.assertTrue(np.all(result == expected))
def test_jit_promotion(self):
expr = make_expr(dshape('10, int32'), dshape('10, float32'))
result = blaze.eval(expr, strategy='jit')
expected = blaze.array([ 0, 2, 6, 12, 20, 30, 42, 56, 72, 90],
dshape=dshape('10, float64'))
self.assertEqual(type(result), blaze.Array)
self.assertTrue(np.all(result == expected))
def function(self):
A = getattr(self, storage1 + 'A')
B = getattr(self, storage2 + 'B')
Rd = kernel(A, B)
self.assert_(isinstance(Rd, blaze.Array))
self.assert_(Rd.ddesc.capabilities.deferred)
p = _ddesc(storage3 + 'Rd') if storage3 == 'dsk' else None
try:
Rc = blaze.eval(Rd, ddesc=p)
self.assert_(isinstance(Rc, blaze.Array))
npy_data = getattr(self, 'npy' + R)
assert_allclose(np.array(ddesc_as_py(Rc.ddesc)), npy_data)
if storage3 == 'dsk':
self.assert_(Rc.ddesc.capabilities.persistent)
else:
self.assert_(not Rc.ddesc.capabilities.persistent)
finally:
try:
if p is not None:
p.remove()
except:
pass # show the real error...
def test_nesting(self):
myfunc = create_overloaded_add()
# A little bit of nesting
a = blaze.eval(myfunc(myfunc(blaze.array([3, 4]), blaze.array([1, 2])),
blaze.array([2, 10])))
self.assertEqual(a.dshape, dshape('2 * int32'))
self.assertEqual(nd.as_py(a.ddesc.dynd_arr()), [6, 16])
def test_exec_scalar(self):
a = blaze.array(range(10), dshape=dshape('10, int32'))
b = 10
expr = add(a, multiply(a, b))
result = blaze.eval(expr)
np_a = np.arange(10)
expected = np_a + np_a * b
self.assertTrue(np.all(result == expected))
def test_nesting(self):
myfunc = create_overloaded_add()
# A little bit of nesting
a = blaze.eval(myfunc(myfunc(blaze.array([3,4]), blaze.array([1,2])),
blaze.array([2,10])))
self.assertEqual(a.dshape, blaze.dshape('2, int32'))
self.assertEqual(nd.as_py(a._data.dynd_arr()), [6, 16])
def test_jit_scalar(self):
a = blaze.array(range(10), dshape=dshape('10, int32'))
b = 10
expr = add(a, mul(a, b))
result = blaze.eval(expr)
np_a = np.arange(10)
expected = np_a + np_a * b
self.assertTrue(np.all(result == expected))
def test_query_where(self):
expr = ops.index(self.table, self.col_i > 5)
result = eval(expr)
row1, row2 = result
self.assertEqual((int(row1[0]), str(row1[1]), float(row1[2])),
(8, "world", 4.2))
self.assertEqual((int(row2[0]), str(row2[1]), float(row2[2])),
(16, "!", 8.4))
def test_interp(self):
a = array(range(10), dshape=dshape('10, int32'))
b = array(range(10), dshape=dshape('10, float32'))
expr = add(a, mul(a, b))
result = blaze.eval(expr, strategy='py')
expected = blaze.array([ 0, 2, 6, 12, 20, 30, 42, 56, 72, 90])
self.assertEqual(type(result), blaze.Array)
self.assertTrue(np.all(result == expected))
def test_query_where(self):
expr = ops.index(self.table, self.col_i > 5)
result = eval(expr)
row1, row2 = result
self.assertEqual((int(row1[0]), str(row1[1]), float(row1[2])),
(8, "world", 4.2))
self.assertEqual((int(row2[0]), str(row2[1]), float(row2[2])),
(16, "!", 8.4))
def test_overload(self):
# Create an overloaded blaze func, populate it with
# some ckernel implementations extracted from numpy,
# and test some calls on it.
d = blaze.overloading.Dispatcher()
myfunc = blaze.BlazeFunc(d)
def myfunc_dummy(x, y): raise NotImplementedError
# overload int32 -> np.add
sig = blaze.dshape("A..., int32 -> A..., int32 -> A..., int32")
d.add_overload(myfunc_dummy, sig, {})
ckd = _lowlevel.ckernel_deferred_from_ufunc(np.add,
(np.int32, np.int32, np.int32), False)
myfunc.implement(myfunc_dummy, sig, "ckernel", ckd)
# overload int16 -> np.subtract (so we can see the difference)
sig = blaze.dshape("A..., int16 -> A..., int16 -> A..., int16")
d.add_overload(myfunc_dummy, sig, {})
ckd = _lowlevel.ckernel_deferred_from_ufunc(np.subtract,
(np.int16, np.int16, np.int16), False)
myfunc.implement(myfunc_dummy, sig, "ckernel", ckd)
# int32 overload -> add
a = blaze.eval(myfunc(blaze.array([3,4]), blaze.array([1,2])))
self.assertEqual(a.dshape, blaze.dshape('2, int32'))
self.assertEqual(nd.as_py(a._data.dynd_arr()), [4, 6])
# int16 overload -> subtract
a = blaze.eval(myfunc(blaze.array([3,4], dshape='int16'),
blaze.array([1,2], dshape='int16')))
self.assertEqual(a.dshape, blaze.dshape('2, int16'))
self.assertEqual(nd.as_py(a._data.dynd_arr()), [2, 2])
# type promotion to int32
a = blaze.eval(myfunc(blaze.array([3,4], dshape='int16'),
blaze.array([1,2])))
self.assertEqual(a.dshape, blaze.dshape('2, int32'))
self.assertEqual(nd.as_py(a._data.dynd_arr()), [4, 6])
a = blaze.eval(myfunc(blaze.array([3,4]),
blaze.array([1,2], dshape='int16')))
self.assertEqual(a.dshape, blaze.dshape('2, int32'))
self.assertEqual(nd.as_py(a._data.dynd_arr()), [4, 6])
# type promotion to int16
a = blaze.eval(myfunc(blaze.array([3,4], dshape='int8'),
blaze.array([1,2], dshape='int8')))
self.assertEqual(a.dshape, blaze.dshape('2, int16'))
self.assertEqual(nd.as_py(a._data.dynd_arr()), [2, 2])
# A little bit of nesting
a = blaze.eval(myfunc(myfunc(blaze.array([3,4]), blaze.array([1,2])),
blaze.array([2,10])))
self.assertEqual(a.dshape, blaze.dshape('2, int32'))
self.assertEqual(nd.as_py(a._data.dynd_arr()), [6, 16])
# More nesting, with conversions
a = blaze.eval(myfunc(myfunc(blaze.array([1,2]), blaze.array([-2, 10])),
myfunc(blaze.array([1, 5], dshape='int16'),
blaze.array(3, dshape='int16'))))
self.assertEqual(a.dshape, blaze.dshape('2, int32'))
self.assertEqual(nd.as_py(a._data.dynd_arr()), [-3, 14])
def test_nesting_and_coercion(self):
myfunc = create_overloaded_add()
# More nesting, with conversions
a = blaze.eval(myfunc(myfunc(blaze.array([1,2]), blaze.array([-2, 10])),
myfunc(blaze.array([1, 5], dshape='int16'),
blaze.array(3, dshape='int16'))))
self.assertEqual(a.dshape, blaze.dshape('2, int32'))
self.assertEqual(nd.as_py(a._data.dynd_arr()), [-3, 14])
def test_min_zerosize(self):
# Empty min operations should raise, because it has no
# reduction identity
self.assertRaises(ValueError, blaze.eval, blaze.min([]))
self.assertRaises(ValueError, blaze.eval, blaze.min([], keepdims=True))
self.assertRaises(ValueError, blaze.eval, blaze.min([[], []]))
self.assertRaises(ValueError, blaze.eval,
blaze.min([[], []], keepdims=True))
self.assertRaises(ValueError, blaze.eval, blaze.min([[], []], axis=-1))
self.assertRaises(ValueError, blaze.eval,
blaze.min([[], []], axis=-1, keepdims=True))
# However, if we're only reducing on a non-empty dimension, it's ok
self.assertEqual(
ddesc_as_py(blaze.eval(blaze.min([[], []], axis=0)).ddesc), [])
self.assertEqual(
ddesc_as_py(
blaze.eval(blaze.min([[], []], axis=0, keepdims=True)).ddesc),
[[]])
def test_overload_coercion(self):
myfunc = create_overloaded_add()
# Test type promotion to int32
a = blaze.eval(myfunc(blaze.array([3,4], dshape='int16'),
blaze.array([1,2])))
self.assertEqual(a.dshape, blaze.dshape('2, int32'))
self.assertEqual(nd.as_py(a._data.dynd_arr()), [4, 6])
a = blaze.eval(myfunc(blaze.array([3,4]),
blaze.array([1,2], dshape='int16')))
self.assertEqual(a.dshape, blaze.dshape('2, int32'))
self.assertEqual(nd.as_py(a._data.dynd_arr()), [4, 6])
# Test type promotion to int16
a = blaze.eval(myfunc(blaze.array([3,4], dshape='int8'),
blaze.array([1,2], dshape='int8')))
self.assertEqual(a.dshape, blaze.dshape('2, int16'))
self.assertEqual(nd.as_py(a._data.dynd_arr()), [2, 2])
def test_overload_coercion(self):
myfunc = create_overloaded_add()
# Test type promotion to int32
a = blaze.eval(myfunc(blaze.array([3, 4], dshape='int16'),
blaze.array([1, 2])))
self.assertEqual(a.dshape, dshape('2 * int32'))
self.assertEqual(nd.as_py(a.ddesc.dynd_arr()), [4, 6])
a = blaze.eval(myfunc(blaze.array([3, 4]),
blaze.array([1, 2], dshape='int16')))
self.assertEqual(a.dshape, dshape('2 * int32'))
self.assertEqual(nd.as_py(a.ddesc.dynd_arr()), [4, 6])
# Test type promotion to int16
a = blaze.eval(myfunc(blaze.array([3, 4], dshape='int8'),
blaze.array([1, 2], dshape='int8')))
self.assertEqual(a.dshape, dshape('2 * int16'))
self.assertEqual(nd.as_py(a.ddesc.dynd_arr()), [2, 2])
def test_mixed(self):
types1 = ['int8', 'int16', 'int32', 'int64']
types2 = ['int16', 'int32', 'float32', 'float64']
for ty1, ty2 in zip(types1, types2):
a = blaze.array(range(1, 6), dshape=ty1)
b = blaze.array(range(5), dshape=ty2)
c = (a + b) * (a - b)
c = blaze.eval(c)
result = [a * a - b * b for (a, b) in zip(range(1, 6), range(5))]
self.assertEqual(ddesc_as_py(c.ddesc), result)
def reduce_dim(kernel, a):
from blaze import eval
a = eval(a)
it = iter(a)
result = next(it)
for x in it:
result = kernel(result, x)
return result
def test_select_where(self):
expr = ops.index(self.col_i + 2 * self.col_price,
blaze.logical_and(self.col_price > 5, self.col_price < 7))
result = eval(expr)
np_result = (self.np_i + 2 * self.np_price)[
np.logical_and(self.np_price > 5, self.np_price < 7)]
self.assertEqual([float(x) for x in result],
[float(x) for x in np_result])
def test_select_where(self):
expr = ops.index(self.col_i + 2 * self.col_price,
blaze.logical_and(self.col_price > 5, self.col_price < 7))
result = eval(expr)
np_result = (self.np_i + 2 * self.np_price)[
np.logical_and(self.np_price > 5, self.np_price < 7)]
self.assertEqual([float(x) for x in result],
[float(x) for x in np_result])
def reduce_dim(kernel, a):
from blaze import eval
a = eval(a)
it = iter(a)
result = next(it)
for x in it:
result = kernel(result, x)
return result
def test_mixed(self):
types1 = ['int8', 'int16', 'int32', 'int64']
types2 = ['int16', 'int32', 'float32', 'float64']
for ty1, ty2 in zip(types1, types2):
a = blaze.array(range(1,6), dshape=ty1)
b = blaze.array(range(5), dshape=ty2)
c = (a+b)*(a-b)
c = blaze.eval(c)
result = [a*a - b*b for (a,b) in zip(range(1,6),range(5))]
self.assertEqual(dd_as_py(c._data), result)
def test_min_zerosize(self):
# Empty min operations should raise, because it has no
# reduction identity
self.assertRaises(ValueError, blaze.eval, blaze.min([]))
self.assertRaises(ValueError, blaze.eval, blaze.min([], keepdims=True))
self.assertRaises(ValueError, blaze.eval, blaze.min([[], []]))
self.assertRaises(ValueError, blaze.eval, blaze.min([[], []],
keepdims=True))
self.assertRaises(ValueError, blaze.eval, blaze.min([[], []], axis=-1))
self.assertRaises(ValueError, blaze.eval, blaze.min([[], []],
axis=-1,
keepdims=True))
# However, if we're only reducing on a non-empty dimension, it's ok
self.assertEqual(ddesc_as_py(blaze.eval(blaze.min([[], []],
axis=0)).ddesc),
[])
self.assertEqual(ddesc_as_py(blaze.eval(blaze.min([[], []],
axis=0,
keepdims=True)).ddesc),
[[]])
def test_binary_kerneltree(self):
# Create some simple blaze funcs, using Numba
def _add(a,b):
return a + b
def _mul(a,b):
return a * b
add = BlazeFunc('add',[('f8(f8,f8)', _add),
('c16(c16,c16)', _add)])
mul = BlazeFunc('mul', {(double,)*3: _mul,
(c128,)*3: _mul})
# Array data and expression
af = blaze.array([[1,2,3], [4,5,6]],dshape=double)
bf = blaze.array([2,3,4],dshape=double)
cf = add(af,bf)
df = mul(cf,cf)
ubck = df._data.kerneltree.unbound_single_ckernel
# Allocate the result, and run the kernel across the arguments
result = blaze.zeros(df.dshape)
args = [arg.arr._data for arg in df._data.args]
ck = ubck.bind(result._data, args)
execute_expr_single(result._data, args,
df._data.kerneltree.kernel.dshapes[-1],
df._data.kerneltree.kernel.dshapes[:-1], ck)
self.assertEqual(dd_as_py(result._data),
[[(a+b) * (a+b) for a, b in izip(a1, b1)]
for a1, b1 in izip(
[[1,2,3], [4,5,6]], [[2,3,4]]*2)])
# Use blaze.eval to evaluate cf and df into concrete arrays
cf2 = blaze.eval(cf)
self.assertEqual(dd_as_py(cf2._data),
[[(a+b) for a, b in izip(a1, b1)]
for a1, b1 in izip(
[[1,2,3], [4,5,6]], [[2,3,4]]*2)])
df2 = blaze.eval(df)
self.assertEqual(dd_as_py(df2._data),
[[(a+b) * (a+b) for a, b in izip(a1, b1)]
for a1, b1 in izip(
[[1,2,3], [4,5,6]], [[2,3,4]]*2)])
def evaluation(operand_dict):
a = blaze.load(operand_dict['a'])
b = blaze.load(operand_dict['b'])
expr = (a+b)*(a*b)
print(type(expr)) # would this be "blaze.array"?
print(type(expr._data)) # would this be blaze.BlazeFuncDataDescriptor?
print(expr) # what should this print???
c = blaze.eval(expr, out_caps={}, hints={})
print(c) #should print the result... rejoice!
def evaluation(operand_dict):
a = blaze.load(operand_dict['a'])
b = blaze.load(operand_dict['b'])
expr = (a + b) * (a * b)
print(type(expr)) # would this be "blaze.array"?
print(type(expr._data)) # would this be blaze.BlazeFuncDataDescriptor?
print(expr) # what should this print???
c = blaze.eval(expr, out_caps={}, hints={})
print(c) #should print the result... rejoice!
def test_select_expr(self):
raise SkipTest("Correctly compose queries with aggregations")
expr = ((ops.max(self.col_price) / ops.min(self.col_price)) *
(self.col_i + 2) * 3.1 - ops.avg(self.col_i))
result = eval(expr)
np_result = ((np.max(self.np_price) / np.min(self.np_price)) *
(self.np_i + 2) * 3.1 -
np.average(self.np_i) / np.max(self.np_price))
self.assertEqual([float(x) for x in result],
[float(x) for x in np_result])
def test_select_expr(self):
raise SkipTest("Correctly compose queries with aggregations")
expr = ((ops.max(self.col_price) / ops.min(self.col_price)) *
(self.col_i + 2) * 3.1 -
ops.avg(self.col_i))
result = eval(expr)
np_result = ((np.max(self.np_price) / np.min(self.np_price)) *
(self.np_i + 2) * 3.1 -
np.average(self.np_i) / np.max(self.np_price))
self.assertEqual([float(x) for x in result],
[float(x) for x in np_result])
def isolated():
npyA = np.arange(0.0, 100.0).reshape(20, 5)
npyB = np.arange(0.0, 100.0).reshape(20, 5)
memA = blaze.array(npyA)
memB = blaze.array(npyB)
_mk_dir()
dskA = blaze.array(npyA, storage=_store('dskA'))
dskB = blaze.array(npyB, storage=_store('dskB'))
expr = memA + memA
#expr = memA + dskA
#expr = dskA + dskA
print(memA.dshape, expr.dshape)
p = _store('dskRd')
result = blaze.eval(expr, storage=p)
#print(result)
result2 = blaze.eval(result == npyA + npyA)
assert np.all(result2)
def test_query_exec(self):
print("establishing connection...")
conn = interface.SciDBShimInterface('http://192.168.56.101:8080/')
print(conn)
a = zeros(ds, conn)
b = ones(ds, conn)
expr = a + b
graph, ctx = expr.expr
self.assertEqual(graph.dshape, dshape('10, 10, float64'))
result = eval(expr)
print(result)
def test_query_exec(self):
print("establishing connection...")
conn = interface.SciDBShimInterface('http://192.168.56.101:8080/')
print(conn)
a = zeros(ds, conn)
b = ones(ds, conn)
expr = a + b
graph, ctx = expr.expr
self.assertEqual(graph.dshape, dshape('10, 10, float64'))
result = eval(expr)
print(result)
def dd_as_py(dd):
"""
Converts the data in a data descriptor into Python
types. This uses the data_descriptor iteration methods,
so is not expected to be fast. Its main initial purpose
is to assist with writing unit tests.
"""
# TODO: This function should probably be removed.
if not isinstance(dd, IDataDescriptor):
raise TypeError('expected DataDescriptor, got %r' % type(dd))
if isinstance(dd, BLZDataDescriptor):
return [dd_as_py(child_dd) for child_dd in dd]
if dd.capabilities.deferred:
from blaze import Array, eval
dd = eval(Array(dd))._data
return nd.as_py(dd.dynd_arr())
def ddesc_as_py(ddesc):
"""
Converts the data in a data descriptor into Python
types. This uses the data_descriptor iteration methods,
so is not expected to be fast. Its main initial purpose
is to assist with writing unit tests.
"""
# TODO: This function should probably be removed.
if not isinstance(ddesc, DDesc):
raise TypeError('expected DDesc instance, got %r' % type(ddesc))
if isinstance(ddesc, BLZ_DDesc):
return [ddesc_as_py(child_ddesc) for child_ddesc in ddesc]
if ddesc.capabilities.deferred:
from blaze import Array, eval
ddesc = eval(Array(ddesc)).ddesc
return nd.as_py(ddesc.dynd_arr())
def test_query(self):
a = zeros(ds, self.conn)
b = ones(ds, self.conn)
expr = add(a, multiply(a, b))
graph, ctx = expr.expr
self.assertEqual(graph.dshape, dshape('10, 10, float64'))
result = eval(expr)
self.assertEqual(len(self.conn.recorded), 1)
[(query, persist)] = self.conn.recorded
query = str(query)
self.assertIn("+", query)
self.assertIn("*", query)
self.assertIn("build", query)
def test_query(self):
a = zeros(ds, self.conn)
b = ones(ds, self.conn)
expr = add(a, mul(a, b))
graph, ctx = expr.expr
self.assertEqual(graph.dshape, dshape('10, 10, float64'))
result = eval(expr)
self.assertEqual(len(self.conn.recorded), 1)
[(query, persist)] = self.conn.recorded
query = str(query)
self.assertIn("+", query)
self.assertIn("*", query)
self.assertIn("build", query)
def test_sum_zerosize(self):
# Empty sum operations should produce 0, the reduction identity
self.assertEqual(ddesc_as_py(blaze.eval(blaze.sum([])).ddesc), 0)
self.assertEqual(
ddesc_as_py(blaze.eval(blaze.sum([], keepdims=True)).ddesc), [0])
self.assertEqual(ddesc_as_py(blaze.eval(blaze.sum([[], []])).ddesc), 0)
self.assertEqual(
ddesc_as_py(blaze.eval(blaze.sum([[], []], keepdims=True)).ddesc),
[[0]])
self.assertEqual(
ddesc_as_py(blaze.eval(blaze.sum([[], []], axis=-1)).ddesc),
[0, 0])
self.assertEqual(
ddesc_as_py(
blaze.eval(blaze.sum([[], []], axis=-1, keepdims=True)).ddesc),
[[0], [0]])
# If we're only reducing on a non-empty dimension, we might still
# end up with zero-sized outputs
self.assertEqual(
ddesc_as_py(blaze.eval(blaze.sum([[], []], axis=0)).ddesc), [])
self.assertEqual(
ddesc_as_py(
blaze.eval(blaze.sum([[], []], axis=0, keepdims=True)).ddesc),
[[]])
def test_neg_scalar(self):
expr = -self.col_i
result = eval(expr)
self.assertEqual([int(x) for x in result], [-4, -8, -16])
def method(self, *args, **kwargs):
result = blaze.eval(blaze.Array(self))
self._result = result
method = getattr(result._data, methname)
return method(*args, **kwargs)
def test_mod_scalar(self):
expr = self.col_i % 3
result = eval(expr)
self.assertEqual([int(x) for x in result], [1, 2, 1])
def test_eq_scalar(self):
expr = self.col_i == 8
result = eval(expr)
self.assertEqual(result.dshape.measure, bool_)
self.assertEqual([bool(x) for x in result], [False, True, False])
return result
def ooc_filter(array, conditions):
pass
if __name__ == '__main__':
#import numpy as np
from dynd import nd
arr = nd.array([[1, 2], [3, 4], [5, 6]])
conditions = nd.array([[True, False], [True, True], [False, False]])
expr = filter(arr, conditions)
result = blaze.eval(expr, strategy='py')
print(">>> result = filter([[1, 2], [3, 4], [5, 6]],\n"
" [[True, False], [True, True], [False, False]])")
print(">>> result")
print(result)
print(">>> type(result)")
print(type(result))
expr = filter(arr + 10, conditions)
result = blaze.eval(expr, strategy='py')
print(">>> result = filter([[1, 2], [3, 4], [5, 6]] + 10,\n"
" [[True, False], [True, True], [False, False]])")
print(">>> result")
print(result)
print(">>> type(result)")
print(type(result))
def test_floordiv_scalar(self):
expr = self.col_i // 2
result = eval(expr)
self.assertEqual([int(x) for x in result], [2, 4, 8])
def test_ne_scalar(self):
expr = self.col_i != 8
result = eval(expr)
self.assertEqual([bool(x) for x in result], [True, False, True])
def method(self, *args, **kwargs):
result = blaze.eval(blaze.Array(self))
self._result = result
method = getattr(result.ddesc, methname)
return method(*args, **kwargs)
def test_truediv_scalar(self):
expr = self.col_i / 2
result = eval(expr)
self.assertEqual([float(x) for x in result], [2., 4., 8.])
