如何避免嵌套的三元运算符

result = condition1 ? (condition2 ? value1 : value2) : value3

if condition1:
    if condition2:
        result = value1
    else:
        result = value2
else:
    result = value3

result = (condition1 ? value1 : (condition2 ? value2 : (condition3 ? value3 : value4)))

if condition1:
    result = value1
elif condition2:
    result = value2
elif condition3:
    result = value3
else:
    result = value4

result = condition1 ? (condition2 ? value1 : value2) : value3

temp = condition2 ? value1 : value2
result = condition1 ? temp : value3