如何从多个tkinter选项菜单中获取值？

Question

你好，我需要创建一个窗口，有5个不同的下拉菜单，我需要保存5个给出的答案。我设法用5种不同的下拉菜单创建了窗口。但是，当我运行代码时，只保存了最后的答案。我如何检索所有的5个选项？谢谢

    # Import the tkinter module
import tkinter
  
# Create the default window
root = tkinter.Tk()
root.title("Thruster types")
#root.geometry('700x500')
  
# Create the list of options
options_list = 'Tunnel', 'Azimuth', 'Pod', 'Shaft Line', 'Cycloid'
  

  
#Create an empty list that I will fill with my inputs
Thruster=[None]*5
# Create the optionmenu widget and passing 
# the options_list and value_inside to it.
for i in range (0, 5, 1):
    # Variable to keep track of the option selected in OptionMenu
    value_inside = tkinter.StringVar(root)
     # Set the default value of the variable
    value_inside.set("Thruster"+str(i+1))   
    question_menu = tkinter.OptionMenu(root, value_inside, *options_list)
    question_menu.pack()

    
def print_answers():

    print(value_inside.get()) #Placing the inputs into the list Thruster
    return None
  
  
# Submit button
# Whenever we click the submit button, our submitted
# option is printed ---Testing purpose
submit_button = tkinter.Button(root, text='Submit', command=print_answers)
submit_button.pack()

root.mainloop()
print(Thruster)

Answer 1

为循环中创建的每个StringVar创建一个列表来存储OptionMenu。然后，对列表中的每个值调用.get()来获取该值。

如下所示：

    # Import the tkinter module
import tkinter
  
# Create the default window
root = tkinter.Tk()
root.title("Thruster types")
#root.geometry('700x500')
  
# Create the list of options
options_list = 'Tunnel', 'Azimuth', 'Pod', 'Shaft Line', 'Cycloid'
  

  
#Create an empty list that I will fill with my inputs
Thruster=[None]*5

# list of all StringVars for each OptionMenu
values = []

# Create the optionmenu widget and passing 
# the options_list and value_inside to it.
for i in range (0, 5, 1):
    # Variable to keep track of the option selected in OptionMenu
    value_inside = tkinter.StringVar(root)
     # Set the default value of the variable
    value_inside.set("Thruster"+str(i+1))   
    question_menu = tkinter.OptionMenu(root, value_inside, *options_list)
    question_menu.pack()
    values.append(value_inside)

    
def print_answers():
    for val in values:
        print(val.get()) #Placing the inputs into the list Thruster
    return None
  
  
# Submit button
# Whenever we click the submit button, our submitted
# option is printed ---Testing purpose
submit_button = tkinter.Button(root, text='Submit', command=print_answers)
submit_button.pack()

root.mainloop()