Python WildFunction示例

示例#1

def test_functions():
    g = WildFunction('g')
    p = Wild('p')
    q = Wild('q')

    f = cos(5 * x)
    notf = x
    assert f.match(p * cos(q * x)) == {p: 1, q: 5}
    assert f.match(p * g) == {p: 1, g: cos(5 * x)}
    assert notf.match(g) is None

    F = WildFunction('F', nargs=2)
    assert F.nargs == FiniteSet(2)
    f = Function('f')
    assert f(x).match(F) is None

    F = WildFunction('F', nargs=(1, 2))
    assert F.nargs == FiniteSet(1, 2)

    # issue sympy/sympy#2711
    f = meijerg(((), ()), ((0, ), ()), x)
    a = Wild('a')
    b = Wild('b')

    assert f.find(a) == {
        0: 1,
        x: 1,
        meijerg(((), ()), ((0, ), ()), x): 1,
        (): 3,
        (0, ): 1,
        ((), ()): 1,
        ((0, ), ()): 1
    }
    assert f.find(a + b) == {0: 1, x: 1, meijerg(((), ()), ((0, ), ()), x): 1}
    assert f.find(a**2) == {x: 1, meijerg(((), ()), ((0, ), ()), x): 1}

示例#2

文件： test_str.py 项目： goretkin/diofant

def test_Function():
    f = Function('f')
    fx = f(x)
    w = WildFunction('w')
    assert str(f) == "f"
    assert str(fx) == "f(x)"
    assert str(w) == "w_"

示例#3

def test_functions_X1():
    g = WildFunction('g')
    p = Wild('p')
    q = Wild('q')

    f = cos(5 * x)
    assert f.match(p * g(q * x)) == {p: 1, g: cos, q: 5}

示例#4

def test_Function():
    f = Function('f')
    fx = f(x)
    w = WildFunction('w')
    assert str(f) == 'f'
    assert str(fx) == 'f(x)'
    assert str(w) == 'w_'

示例#5

def test_functions():
    g = WildFunction('g')
    p = Wild('p')
    q = Wild('q')

    f = cos(5 * x)
    notf = x
    assert f.match(p * cos(q * x)) == {p: 1, q: 5}
    assert f.match(p * g) == {p: 1, g: cos(5 * x)}
    assert notf.match(g) is None

    F = WildFunction('F', nargs=2)
    assert F.nargs == FiniteSet(2)
    f = Function('f')
    assert f(x).match(F) is None

    F = WildFunction('F', nargs=(1, 2))
    assert F.nargs == FiniteSet(1, 2)

示例#6

文件： test_match.py 项目： Blendify/diofant

def test_functions():
    g = WildFunction('g')
    p = Wild('p')
    q = Wild('q')

    f = cos(5 * x)
    notf = x
    assert f.match(p * cos(q * x)) == {p: 1, q: 5}
    assert f.match(p * g) == {p: 1, g: cos(5 * x)}
    assert notf.match(g) is None

示例#7

文件： test_repr.py 项目： diofant/diofant

def test_WildFunction():
    sT(WildFunction('w'), "WildFunction('w')")