def test_issue_12283():
x = symbols('x')
X = RandomSymbol(x)
Y = RandomSymbol('Y')
Z = RandomMatrixSymbol('Z', 2, 3)
RI = RandomIndexedSymbol(Indexed('RI', 3))
assert pspace(Z) == PSpace()
assert pspace(RI) == PSpace()
assert pspace(X) == PSpace()
assert E(X) == Expectation(X)
assert P(Y > 3) == Probability(Y > 3)
assert variance(X) == Variance(X)
assert variance(RI) == Variance(RI)
assert covariance(X, Y) == Covariance(X, Y)
assert covariance(X, Z) == Covariance(X, Z)
def sample(self, size=(), library='scipy', seed=None):
"""
Internal sample method
Returns dictionary mapping RandomSymbol to realization value.
"""
return {RandomSymbol(self.symbol, self): self.distribution.sample(size,
library=library, seed=seed)}
def test_random_symbol_no_pspace():
x = RandomSymbol(Symbol('x'))
assert x.pspace == PSpace()
def test_print_random_symbol():
R = RandomSymbol(Symbol('R'))
assert mpp.doprint(R) == '<mi>R</mi>'
assert mp.doprint(R) == '<ci>R</ci>'
def value(self):
return RandomSymbol(self.symbol, self)
