另一个列表理解问题

Question

我有这样的：

    if Setting["Language"] == "en":
        f.m_radioBox3.SetSelection(0)
    elif Setting["Language"] == "pt":
        f.m_radioBox3.SetSelection(1)
    elif Setting["Language"] == "fr":
        f.m_radioBox3.SetSelection(2)
    elif Setting["Language"] == "es":
        f.m_radioBox3.SetSelection(3)

然后我这样做了：

    Linguas = ["en","pt","fr","es"]
    a = 0
    for i in Linguas:
        if i == Setting["Language"]:
            f.m_radioBox3.SetSelection(a)
        a += 1

是否有可能进一步简化它并将其变成一行行？

Answer 1

Linguas = ["en","pt","fr","es"]

if Setting["Language"] in Linguas:
    f.m_radioBox3.SetSelection(Linguas.index(Setting["Language"]))

或者你可以用字典来做到这一点：

Linguas = {"en":0,"pt":1,"fr":2,"es":3}

if Setting["Language"] in Linguas:
    f.m_radioBox3.SetSelection(Linguas[Setting["Language"]])

Answer 2

mapping = {"en" : 0, "pt" : 1, "fr" : 2, "es" : 3}
if Setting["Language"] in mapping:
    f.m_radioBox3.SetSelection(mapping[Setting["Language"]])

如果您不需要检查设置是否是可接受的值之一，则它将变为：

mapping = {"en" : 0, "pt" : 1, "fr" : 2, "es" : 3}
f.m_radioBox3.SetSelection(mapping[Setting["Language"]])