Question

所以我试图为我的python脚本创建一个case语句以使它更干净但是没有这样的东西（据我所知）所以我刚刚制作了一堆if / else语句。有没有办法让这个更干净？

if (config.dutCardTypes[0] in [6, 7]) and (config.isPrimary) and (config.measPwr):        ### Power Measurement for 28nm on Primary Only
  if dsppif[dutDevId].pifReadData(0x1e800) == 0x1 :
    print "Link Up, Measuring SteadyState Power..."
    if (("Sahara Validation" in dsppif[dutDevId].board.description)) :
        v, i, pwr = getOnBoardPwr(dsppif[dutDevId],"Sahara Validation")
        vdd21A_pwr = pwr["P2V1"]
        vdd12A_pwr = pwr["P1V2"]
        vdd_pwr    = pwr["VDD"]
        vdd3v3_pwr = pwr["P3V3"]
    elif "Athena" in dsppif[dutDevId].board.description:
        if (("Quad A" in dsppif[dutDevId].board.description)) :
            v, i, pwr = getOnBoardPwr(dsppif[dutDevId],"Athena Quad A")
            vdd21A_pwr = pwr["P2V1_A"] + pwr["P2V1_B"] + pwr["P2V1_C"] + pwr["P2V1_D"] + pwr["P2V1_E"]
            vdd12A_pwr = pwr["P1V2_A"] + pwr["P1V2_B"]
            vdd_pwr    = pwr["VDD"]
        elif (("Quad B" in dsppif[dutDevId].board.description)) :
            v, i, pwr = getOnBoardPwr(dsppif[dutDevId],"Athena Quad B")
            vdd21A_pwr = pwr["P2V1_A"] + pwr["P2V1_B"] + pwr["P2V1_C"] + pwr["P2V1_D"] + pwr["P2V1_E"]
            vdd12A_pwr = pwr["P1V2_A"] + pwr["P1V2_B"]
            vdd_pwr    = pwr["VDD"]
        elif (("Quad C" in dsppif[dutDevId].board.description)) :
            v, i, pwr = getOnBoardPwr(dsppif[dutDevId],"Athena Quad C")
            vdd21A_pwr = pwr["P2V1_A"] + pwr["P2V1_E"]
            vdd12A_pwr = pwr["P1V2_A"] 
            vdd_pwr    = pwr["VDD"]

Answer 1

在高层次上，python建议你尝试使用词典来做这种事情。我不会尝试翻译你的例子，因为它有点冗长，但实际上并没有使用像这样的案例陈述：

function(argument){
    switch(argument) {
        case 0:
            return "zero";
        case 1:
            return "one";
        case 2:
            return "two";
        default:
            return "nothing";
    };
};

你可以使用像这样的可能性词典

def numbers_to_strings(argument):
    switcher = {
        0: "zero",
        1: "one",
        2: "two",
    }
    return switcher.get(argument, "nothing")

您还可以创建切换器类，并将您的操作映射到您的条件。总的来说，python方式是提高易读性。

在Python中创建case语句

1 个答案: