Python as_coeff_add Beispiele

Beispiel #1

Datei: test_expr.py Projekt: Botouls/sympy

def test_as_coeff_add():
    assert S(2).as_coeff_add() == (2, ())
    assert S(3.0).as_coeff_add() == (0, (S(3.0),))
    assert S(-3.0).as_coeff_add() == (0, (S(-3.0),))
    assert x.as_coeff_add() == (0, (x,))
    assert (-1 + x).as_coeff_add() == (-1, (x,))
    assert (2 + x).as_coeff_add() == (2, (x,))
    assert (1 + x).as_coeff_add() == (1, (x,))
    assert (x + y).as_coeff_add(y) == (x, (y,))
    assert (3 * x).as_coeff_add(y) == (3 * x, ())
    # don't do expansion
    e = (x + y) ** 2
    assert e.as_coeff_add(y) == (0, (e,))

Beispiel #2

def test_as_coeff_add():
    assert S(2).as_coeff_add() == (2, ())
    assert S(3.0).as_coeff_add() == (0, (S(3.0), ))
    assert S(-3.0).as_coeff_add() == (0, (S(-3.0), ))
    assert x.as_coeff_add() == (0, (x, ))
    assert (-1 + x).as_coeff_add() == (-1, (x, ))
    assert (2 + x).as_coeff_add() == (2, (x, ))
    assert (1 + x).as_coeff_add() == (1, (x, ))
    assert (x + y).as_coeff_add(y) == (x, (y, ))
    assert (3 * x).as_coeff_add(y) == (3 * x, ())
    # don't do expansion
    e = (x + y)**2
    assert e.as_coeff_add(y) == (0, (e, ))