Python as_coeff_mulの例

コード例 #1

ファイル: test_expr.py プロジェクト: Botouls/sympy

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

コード例 #2

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