如何在kivy语言中添加elif语句？

Question

祝大家愉快，我想问一下如何在Kivy语言中添加elif语句。这是我的 .kv 文件中的代码：

MDCard:
    size_hint: None, None
    size: 232.5, 23
    orientation: "vertical"
    pos: 352.5, 255 + 23/2
    md_bg_color: [200/255, 200/255, 0/255, 1] if app.weekday == "2" else [0/255, 200/255, 0/255, 1]

我想添加一个条件 if app.weekday == "3": md_bg_color: [200/255, 0/255, 0/255, 1]

非常感谢。

Answer 1

嗨，我会把这个作为答案。

这是正常的 python languaje，而且是“if one-liner”
没有 if-elif-else 单行这样的东西，但你可以使用一些 if-else 连接
我不会推荐那个。

4)您可以创建一个默认字典并按天访问它以 select 您的颜色：

from collections import defaultdict
#create default dict and default color
default_color = [0/255, 200/255, 0/255, 1]
color_dict_by_day = defaultdict(lambda: default_color)

#add other colors by key as "num"

color_dict_by_day["2"] = [200/255, 200/255, 0/255, 1]
color_dict_by_day["3"] = [200/255, 0/255, 0/255, 1]
# and so on....

#for last call your code block as:

MDCard:
    size_hint: None, None
    size: 232.5, 23
    orientation: "vertical"
    pos: 352.5, 255 + 23/2
    md_bg_color: color_dict_by_day[app.weekday]

Answer 2

你可以像这样做你想做的事：

md_bg_color: [200/255, 200/255, 0/255, 1] if app.weekday == "2" else [0/255, 200/255, 0/255, 1] if app.weekday == "3" else [200/255, 0/255, 0/255, 1]

如何在kivy语言中添加elif语句？

how to add elif statement in kivy language?

python

kivy

kivy-language

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