當前位置: 首頁>>代碼示例>>Python>>正文

Python sets.Interval類代碼示例

本文整理匯總了Python中sympy.sets.sets.Interval類的典型用法代碼示例。如果您正苦於以下問題：Python Interval類的具體用法？Python Interval怎麽用？Python Interval使用的例子？那麽, 這裏精選的類代碼示例或許可以為您提供幫助。


在下文中一共展示了Interval類的5個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的Python代碼示例。

示例1: test_range_interval_intersection

def test_range_interval_intersection():
    p = symbols('p', positive=True)
    assert isinstance(Range(3).intersect(Interval(p, p + 2)), Intersection)
    assert Range(4).intersect(Interval(0, 3)) == Range(4)
    assert Range(4).intersect(Interval(-oo, oo)) == Range(4)
    assert Range(4).intersect(Interval(1, oo)) == Range(1, 4)
    assert Range(4).intersect(Interval(1.1, oo)) == Range(2, 4)
    assert Range(4).intersect(Interval(0.1, 3)) == Range(1, 4)
    assert Range(4).intersect(Interval(0.1, 3.1)) == Range(1, 4)
    assert Range(4).intersect(Interval.open(0, 3)) == Range(1, 3)
    assert Range(4).intersect(Interval.open(0.1, 0.5)) is S.EmptySet
開發者ID:AStorus，項目名稱:sympy，代碼行數:11，代碼來源:test_fancysets.py

示例2: test_continuous_domain

def test_continuous_domain():
    x = Symbol('x')
    assert continuous_domain(sin(x), x, Interval(0, 2*pi)) == Interval(0, 2*pi)
    assert continuous_domain(tan(x), x, Interval(0, 2*pi)) == \
        Union(Interval(0, pi/2, False, True), Interval(pi/2, 3*pi/2, True, True),
              Interval(3*pi/2, 2*pi, True, False))
    assert continuous_domain((x - 1)/((x - 1)**2), x, S.Reals) == \
        Union(Interval(-oo, 1, True, True), Interval(1, oo, True, True))
    assert continuous_domain(log(x) + log(4*x - 1), x, S.Reals) == \
        Interval(1/4, oo, True, True)
    assert continuous_domain(1/sqrt(x - 3), x, S.Reals) == Interval(3, oo, True, True)
    assert continuous_domain(1/x - 2, x, S.Reals) == \
        Union(Interval.open(-oo, 0), Interval.open(0, oo))
    assert continuous_domain(1/(x**2 - 4) + 2, x, S.Reals) == \
        Union(Interval.open(-oo, -2), Interval.open(-2, 2), Interval.open(2, oo))
開發者ID:baoqchau，項目名稱:sympy，代碼行數:15，代碼來源:test_util.py

示例3: test_bool_as_set

def test_bool_as_set():
    assert ITE(y <= 0, False, y >= 1).as_set() == Interval(1, oo)
    assert And(x <= 2, x >= -2).as_set() == Interval(-2, 2)
    assert Or(x >= 2, x <= -2).as_set() == Interval(-oo, -2) + Interval(2, oo)
    assert Not(x > 2).as_set() == Interval(-oo, 2)
    # issue 10240
    assert Not(And(x > 2, x < 3)).as_set() == \
        Union(Interval(-oo, 2), Interval(3, oo))
    assert true.as_set() == S.UniversalSet
    assert false.as_set() == EmptySet()
    assert x.as_set() == S.UniversalSet
    assert And(Or(x < 1, x > 3), x < 2).as_set() == Interval.open(-oo, 1)
    assert And(x < 1, sin(x) < 3).as_set() == (x < 1).as_set()
    raises(NotImplementedError, lambda: (sin(x) < 1).as_set())
開發者ID:asmeurer，項目名稱:sympy，代碼行數:14，代碼來源:test_boolalg.py

示例4: __new__

 def __new__(cls):
     return Interval.__new__(cls, -S.Infinity, S.Infinity)
開發者ID:atsao72，項目名稱:sympy，代碼行數:2，代碼來源:fancysets.py

示例5: test_normalize_theta_set

def test_normalize_theta_set():

    # Interval
    assert normalize_theta_set(Interval(pi, 2*pi)) == \
        Union(FiniteSet(0), Interval.Ropen(pi, 2*pi))
    assert normalize_theta_set(Interval(9*pi/2, 5*pi)) == Interval(pi/2, pi)
    assert normalize_theta_set(Interval(-3*pi/2, pi/2)) == Interval.Ropen(0, 2*pi)
    assert normalize_theta_set(Interval.open(-3*pi/2, pi/2)) == \
        Union(Interval.Ropen(0, pi/2), Interval.open(pi/2, 2*pi))
    assert normalize_theta_set(Interval.open(-7*pi/2, -3*pi/2)) == \
        Union(Interval.Ropen(0, pi/2), Interval.open(pi/2, 2*pi))
    assert normalize_theta_set(Interval(-pi/2, pi/2)) == \
        Union(Interval(0, pi/2), Interval.Ropen(3*pi/2, 2*pi))
    assert normalize_theta_set(Interval.open(-pi/2, pi/2)) == \
        Union(Interval.Ropen(0, pi/2), Interval.open(3*pi/2, 2*pi))
    assert normalize_theta_set(Interval(-4*pi, 3*pi)) == Interval.Ropen(0, 2*pi)
    assert normalize_theta_set(Interval(-3*pi/2, -pi/2)) == Interval(pi/2, 3*pi/2)
    assert normalize_theta_set(Interval.open(0, 2*pi)) == Interval.open(0, 2*pi)
    assert normalize_theta_set(Interval.Ropen(-pi/2, pi/2)) == \
        Union(Interval.Ropen(0, pi/2), Interval.Ropen(3*pi/2, 2*pi))
    assert normalize_theta_set(Interval.Lopen(-pi/2, pi/2)) == \
        Union(Interval(0, pi/2), Interval.open(3*pi/2, 2*pi))
    assert normalize_theta_set(Interval(-pi/2, pi/2)) == \
        Union(Interval(0, pi/2), Interval.Ropen(3*pi/2, 2*pi))
    assert normalize_theta_set(Interval.open(4*pi, 9*pi/2)) == Interval.open(0, pi/2)
    assert normalize_theta_set(Interval.Lopen(4*pi, 9*pi/2)) == Interval.Lopen(0, pi/2)
    assert normalize_theta_set(Interval.Ropen(4*pi, 9*pi/2)) == Interval.Ropen(0, pi/2)
    assert normalize_theta_set(Interval.open(3*pi, 5*pi)) == \
        Union(Interval.Ropen(0, pi), Interval.open(pi, 2*pi))

    # FiniteSet
    assert normalize_theta_set(FiniteSet(0, pi, 3*pi)) == FiniteSet(0, pi)
    assert normalize_theta_set(FiniteSet(0, pi/2, pi, 2*pi)) == FiniteSet(0, pi/2, pi)
    assert normalize_theta_set(FiniteSet(0, -pi/2, -pi, -2*pi)) == FiniteSet(0, pi, 3*pi/2)
    assert normalize_theta_set(FiniteSet(-3*pi/2, pi/2)) == \
        FiniteSet(pi/2)
    assert normalize_theta_set(FiniteSet(2*pi)) == FiniteSet(0)

    # Unions
    assert normalize_theta_set(Union(Interval(0, pi/3), Interval(pi/2, pi))) == \
        Union(Interval(0, pi/3), Interval(pi/2, pi))
    assert normalize_theta_set(Union(Interval(0, pi), Interval(2*pi, 7*pi/3))) == \
        Interval(0, pi)

    # ValueError for non-real sets
    raises(ValueError, lambda: normalize_theta_set(S.Complexes))
開發者ID:AlexanderKulka，項目名稱:sympy，代碼行數:46，代碼來源:test_fancysets.py


注：本文中的sympy.sets.sets.Interval類示例由純淨天空整理自Github/MSDocs等開源代碼及文檔管理平台，相關代碼片段篩選自各路編程大神貢獻的開源項目，源碼版權歸原作者所有，傳播和使用請參考對應項目的License；未經允許，請勿轉載。