def test_minus2(self):
val = sympify('x-2*y')
py = expr_to_py(val)
self.assert_(isinstance(py, py_expr))
self.assertEqual(py.to_string(), '-2 * y + x')
def test_inv(self):
val = sympify('(a/b)**i')
py = expr_to_py(val)
self.assert_(isinstance(py, py_expr))
self.assertEqual(py.to_string(), '(a / b)**i')
def test_plus(self):
val = sympify('x+y')
py = expr_to_py(val)
self.assert_(isinstance(py, py_expr))
self.assertEqual(py.to_string(), 'y + x')
def test_rational(self):
val = sympify('3/4')
py = expr_to_py(val)
self.assert_(isinstance(py, py_expr))
self.assertEqual(py.to_string(), '3 / 4.0')
def test_one(self):
val = sympify('a**2')
py = expr_to_py(val)
self.assert_(isinstance(py, py_expr))
self.assertEqual(py.to_string(), 'a**2')
def test_pi(self):
val = sympify('pi')
py = expr_to_py(val)
self.assert_(isinstance(py,py_var))
self.assertEqual(py.to_string(),'math.pi')
def test_pi(self):
val = sympify('pi')
py = expr_to_py(val)
self.assert_(isinstance(py, py_var))
self.assertEqual(py.to_string(), 'math.pi')
def test_minus3(self):
val = sympify('z-2*y*z')
py = expr_to_py(val)
self.assert_(isinstance(py,py_expr))
self.assertEqual(py.to_string(),'z + -2 * y * z')
def test_minus4(self):
val = sympify('2*exp(-r)-3*x*exp(-r)')
py = expr_to_py(val)
self.assert_(isinstance(py,py_expr))
self.assertEqual(py.to_string(),'-3 * x * math.exp(-r) + 2 * math.exp(-r)')
def test_plus(self):
val = sympify('x+y')
py = expr_to_py(val)
self.assert_(isinstance(py,py_expr))
self.assertEqual(py.to_string(),'y + x')
def test_minus2(self):
val = sympify('x-2*y')
py = expr_to_py(val)
self.assert_(isinstance(py,py_expr))
self.assertEqual(py.to_string(),'-2 * y + x')
def test_inv(self):
val = sympify('(a/b)**i')
py = expr_to_py(val)
self.assert_(isinstance(py,py_expr))
self.assertEqual(py.to_string(),'(a / b)**i')
def test_one(self):
val = sympify('a**2')
py = expr_to_py(val)
self.assert_(isinstance(py,py_expr))
self.assertEqual(py.to_string(),'a**2')
def test_rational(self):
val = sympify('3/4')
py = expr_to_py(val)
self.assert_(isinstance(py,py_expr))
self.assertEqual(py.to_string(),'3 / 4.0')
def test_minus3(self):
val = sympify('z-2*y*z')
py = expr_to_py(val)
self.assert_(isinstance(py, py_expr))
self.assertEqual(py.to_string(), 'z + -2 * y * z')
def test_one(self):
val = sympify('a+b')
py = expr_to_py(val)
self.assertEqual(py.to_string(), 'b + a')
def test_minus4(self):
val = sympify('2*exp(-r)-3*x*exp(-r)')
py = expr_to_py(val)
self.assert_(isinstance(py, py_expr))
self.assertEqual(py.to_string(),
'-3 * x * math.exp(-r) + 2 * math.exp(-r)')
def test_one(self):
val = sympify('a+b')
py = expr_to_py(val)
self.assertEqual(py.to_string(),'b + a')
