python-几种三元表达式的用法

# 用法一：结果1 if 条件 else 结果2

def func1():
    tj = 2 > 1

    result = ">" if tj else "<"
    print(" result: %s" % result)

# 用法二：(结果2，结果1)[判断]

def func2():
    tj = 2 > 1

    result = ("<", ">")[tj]  # 注：这里是先写else的结果，然后再写if的结果
    print(" result: %s" % result)

# 用法3：{条件值1：结果1，条件值2：结果2}[判断]

def func3():
    tj = 4

    result = {1: 1, 2: 2, 3: 3, 4: 4}[tj]
    print(" result: %s" % result)