Python 如何从 Tkinter 中的列表创建下拉菜单？
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/45441885/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
How can I create a dropdown menu from a List in Tkinter?
提问by Ethan Field
I am creating a GUI that builds information about a person. I want the user to select their birth month using a drop down bar, with the months configured earlier as a list format.
我正在创建一个 GUI 来构建关于一个人的信息。我希望用户使用下拉栏选择他们的出生月份，之前将月份配置为列表格式。
from tkinter import *
birth_month = [
'Jan',
'Feb',
'March',
'April'
] #etc
def click():
entered_text = entry.get()
Data = Tk()
Data.title('Data') #Title
label = Label(Data, text='Birth month select:')
label.grid(row=2, column=0, sticky=W) #Select title
How can I create a drop down list to display the months?
如何创建下拉列表以显示月份？
回答by Ethan Field
To create a "drop down menu" you can use OptionMenuin tkinter
要创建可以OptionMenu在 tkinter 中使用的“下拉菜单”
Example of a basic OptionMenu:
一个基本的例子OptionMenu：
from Tkinter import *
master = Tk()
variable = StringVar(master)
variable.set("one") # default value
w = OptionMenu(master, variable, "one", "two", "three")
w.pack()
mainloop()
More information (including the script above) can be found here.
更多信息（包括上面的脚本）可以在这里找到。
Creating an OptionMenuof the months from a list would be as simple as:
OptionMenu从列表中创建一个月份将非常简单：
from tkinter import *
OPTIONS = [
"Jan",
"Feb",
"Mar"
] #etc
master = Tk()
variable = StringVar(master)
variable.set(OPTIONS[0]) # default value
w = OptionMenu(master, variable, *OPTIONS)
w.pack()
mainloop()
In order to retrieve the value the user has selected you can simply use a .get()on the variable that we assigned to the widget, in the below case this is variable:
为了检索用户选择的值，您可以简单地.get()在我们分配给小部件的变量上使用 a ，在以下情况下，这是variable：
from tkinter import *
OPTIONS = [
"Jan",
"Feb",
"Mar"
] #etc
master = Tk()
variable = StringVar(master)
variable.set(OPTIONS[0]) # default value
w = OptionMenu(master, variable, *OPTIONS)
w.pack()
def ok():
print ("value is:" + variable.get())
button = Button(master, text="OK", command=ok)
button.pack()
mainloop()
I would highly recommend reading through this sitefor further basic tkinter information as the above examples are modified from that site.
我强烈建议通读本网站以获取更多基本的 tkinter 信息，因为上述示例是从该网站修改而来的。
