def argument_symbolic_reference(self, arg):
if hasattr(arg, '_eval'):
arg = symbolic.to_callable(arg)(self.df)
if isinstance(arg, pd.Series):
return arg.name
elif isinstance(arg, pd.DataFrame):
return symbolic.sym_call(lambda *x: x, arg.columns.tolist())
elif isinstance(arg, (list, tuple)):
arglist = [self.argument_symbolic_reference(subarg) for subarg in arg]
return symbolic.sym_call(lambda *x: x, *arglist)
return arg
def argument_symbolic_eval(self, arg):
if isinstance(arg, (list, tuple)):
arglist = [self.argument_symbolic_eval(subarg) for subarg in arg]
return symbolic.sym_call(lambda *x: x, *arglist)
else:
if isinstance(arg, symbolic.Expression):
self.call_has_symbolic = True
return arg
def test_sym_call(self):
expr = sym_call(
'func', Symbol('some_symbol'), 'arg1', 'arg2',
kwarg_name='kwarg value')
self.assertEqual(
repr(expr),
"'func'(*(Symbol('some_symbol'), 'arg1', 'arg2'), " +
"**{'kwarg_name': 'kwarg value'})")
def test_pythagoras(self):
from math import sqrt
X = Symbol('X')
Y = Symbol('Y')
expr = sym_call(sqrt, X ** 2 + Y ** 2)
func = to_callable(expr)
self.assertEqual(func(X=3, Y=4), 5)