[英]ValueError: <tkinter.OptionMenu object .!optionmenu> is not in list
我正在嘗試從另一個列表中打印一個列表索引的相應值,如下所示:
打印(safeDis[chem.index(self.drop2)])
但是這樣做時,我收到了上述錯誤。 我相信我在之前的迭代中使用過這個,但我找不到那個。
import tkinter as tk
from tkinter import ttk
safeDis = [4,88,18,50,12,100]
chem = ["HTP 50%","HTP 84%","HTP 90%","Kerosene","Benzene"]
class Page4:
def __init__(self,root):
self.root = root
self.toplbl = ttk.Label(root, text="Select firing point meterials ",font=("arial",12)) #lable for select meterial 1
self.lbl1 = ttk.Label(root, text="Meterial 1: ",font=("arial",10)) #lable for select meterial 1
self.lbl2 = ttk.Label(root, text = "Meterial 2: " ,font = ("arial",10)) #lable for meterial 2
self.masslbl = ttk.Label(root, text="Mass in Kg:",font=("arial",10))
self.masslbl2 = ttk.Label(root, text="Mass in Kg:",font=("arial",10))
self.typelbl = ttk.Label(root, text="Type:",font=("arial",10))
self.typelbl2 = ttk.Label(root, text="Type:",font=("arial",10))
self.Apply = ttk.Button(root, text="Apply", command = self.new_window) #button to confirm the meterial choices
self.Back = ttk.Button(root, text="Back", command = print("DONG"))
self.mass1 = ttk.Entry(root, width=8)
self.mass2 = tk.Entry(root,width=8)
self.clicked = tk.StringVar() #set the variable to a string value allowing the meterial names to apeer in it
self.clicked.set(chem[3]) #set the default meterial from the chem list
self.clicked2 = tk.StringVar()
self.clicked2.set(chem[3])
self.drop2 = tk.OptionMenu(root, self.clicked2, *chem) #setup the dropdown menue with optionmenue function set to the chem list
self.drop = tk.OptionMenu(root, self.clicked, *chem)
self.toplbl.grid(column=0, row=0,columnspan=3,sticky="w",padx=10,pady=10) #place meterial label 1
self.lbl1.grid(column=0, row=1,padx=10) #place meterial label 1
self.lbl2.grid(column=0, row=3,padx=10) #place meterial label 2
self.mass1.grid(column=2, row=2)
self.mass2.grid(column=2, row=4)
self.masslbl.grid(column=1, row=2)
self.masslbl2.grid(column=1, row=4)
self.typelbl.grid(column=1, row=1,sticky="w")
self.typelbl2.grid(column=1, row=3,sticky="w")
self.drop.grid(column=2, row=1) #place the dropdown menue
self.drop2.grid(column=2, row=3)
self.Apply.grid(column=2,row=5,pady=10,padx=10)
self.Back.grid(column=1,row=5,pady=10,padx=10)
print(safeDis[chem.index(self.drop2)])
def new_window(self):
#print(dongalong)
for widget in self.root.winfo_children():
widget.destroy()
self.app = Page3(self.root)
#class Page5:
def main():
root = tk.Tk()
app = Page4(root)
root.mainloop()
if __name__ == '__main__':
main()
問題是, self.drop2
是的目的OptionMenu
,不是它的值。 要獲取它返回的值,請對其定義的變量( self.clicked2.get()
)使用get()
方法
所以應該是:
print(safeDis[chem.index(self.clicked2.get())])
希望它解決了錯誤,如果還有疑問,請告訴我
干杯
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