Python Rational.match示例

示例#1

文件： test_match.py 项目： cran/rSymPy

def test_symbol():
    x = Symbol('x')
    a,b,c,p,q = map(Wild, 'abcpq')

    e = x
    assert e.match(x) == {}
    assert e.match(a) == {a: x}

    e = Rational(5)
    assert e.match(c) == {c: 5}
    assert e.match(e) == {}
    assert e.match(e+1) == None

示例#2

文件： test_match.py 项目： unix0000/sympy-polys

def test_symbol():
    x = Symbol('x')
    a, b, c, p, q = map(Wild, 'abcpq')

    e = x
    assert e.match(x) == {}
    assert e.match(a) == {a: x}

    e = Rational(5)
    assert e.match(c) == {c: 5}
    assert e.match(e) == {}
    assert e.match(e + 1) == None

示例#3

def test_symbol():
    x = Symbol("x")
    a, b, c, p, q = map(Wild, "abcpq")

    e = x
    assert e.match(x) == {}
    assert e.matches(x) == {}
    assert e.match(a) == {a: x}

    e = Rational(5)
    assert e.match(c) == {c: 5}
    assert e.match(e) == {}
    assert e.match(e + 1) is None

示例#4

def test_behavior2():
    x = Symbol('x')
    p = Wild('p')

    e = Rational(6)
    assert e.match(2 * p) == {p: 3}

    e = 3 * x + 3 + 6 / x
    a = Wild('a', exclude=[x])
    assert e.expand().match(a * x**2 + a * x + 2 * a) == None
    assert e.expand().match(p * x**2 + p * x + 2 * p) == {p: 3 / x}

示例#5

文件： test_match.py 项目： cran/rSymPy

def test_behavior2():
    x = Symbol('x')
    p = Wild('p')

    e = Rational(6)
    assert e.match(2*p) == {p: 3}

    e = 3*x + 3 + 6/x
    a = Wild('a', exclude = [x])
    assert e.expand().match(a*x**2 + a*x + 2*a) == None
    assert e.expand().match(p*x**2 + p*x + 2*p) == {p: 3/x}

示例#6

def test_match_exclude():
    x = Symbol('x')
    y = Symbol('y')
    p = Wild("p")
    q = Wild("q")
    r = Wild("r")

    e = Rational(6)
    assert e.match(2 * p) == {p: 3}

    e = 3 / (4 * x + 5)
    assert e.match(3 / (p * x + q)) == {p: 4, q: 5}

    e = 3 / (4 * x + 5)
    assert e.match(p / (q * x + r)) == {p: 3, q: 4, r: 5}

    e = 2 / (x + 1)
    assert e.match(p / (q * x + r)) == {p: 2, q: 1, r: 1}

    e = 1 / (x + 1)
    assert e.match(p / (q * x + r)) == {p: 1, q: 1, r: 1}

    e = 4 * x + 5
    assert e.match(p * x + q) == {p: 4, q: 5}

    e = 4 * x + 5 * y + 6
    assert e.match(p * x + q * y + r) == {p: 4, q: 5, r: 6}

    a = Wild('a', exclude=[x])

    e = 3 * x
    assert e.match(p * x) == {p: 3}
    assert e.match(a * x) == {a: 3}

    e = 3 * x**2
    assert e.match(p * x) == {p: 3 * x}
    assert e.match(a * x) is None

    e = 3 * x + 3 + 6 / x
    assert e.match(p * x**2 + p * x + 2 * p) == {p: 3 / x}
    assert e.match(a * x**2 + a * x + 2 * a) is None

示例#7

文件： test_match.py 项目： acrlakshman/sympy

def test_match_exclude():
    x = Symbol('x')
    y = Symbol('y')
    p = Wild("p")
    q = Wild("q")
    r = Wild("r")

    e = Rational(6)
    assert e.match(2*p) == {p: 3}

    e = 3/(4*x + 5)
    assert e.match(3/(p*x + q)) == {p: 4, q: 5}

    e = 3/(4*x + 5)
    assert e.match(p/(q*x + r)) == {p: 3, q: 4, r: 5}

    e = 2/(x + 1)
    assert e.match(p/(q*x + r)) == {p: 2, q: 1, r: 1}

    e = 1/(x + 1)
    assert e.match(p/(q*x + r)) == {p: 1, q: 1, r: 1}

    e = 4*x + 5
    assert e.match(p*x + q) == {p: 4, q: 5}

    e = 4*x + 5*y + 6
    assert e.match(p*x + q*y + r) == {p: 4, q: 5, r: 6}

    a = Wild('a', exclude=[x])

    e = 3*x
    assert e.match(p*x) == {p: 3}
    assert e.match(a*x) == {a: 3}

    e = 3*x**2
    assert e.match(p*x) == {p: 3*x}
    assert e.match(a*x) is None

    e = 3*x + 3 + 6/x
    assert e.match(p*x**2 + p*x + 2*p) == {p: 3/x}
    assert e.match(a*x**2 + a*x + 2*a) is None