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首页 > 解决方案 > 如何在没有 TypeError 的情况下在我的 python tkinter 代码上访问这些费率：'dict_keys' object is not subscriptable

python - 如何在没有 TypeError 的情况下在我的 python tkinter 代码上访问这些费率：'dict_keys' object is not subscriptable

问题描述

导入 tkinter 作为 tk 导入请求

类 MyApp: def init (self): self.master=tk.Tk() self.master.geometry('600x400+200+150') self.master.config(bg='#008080') self.frame=tk .Frame(self.master, bg='#008080') self.frame.pack()

    RATES = {
        "Australian Dollar":1.4099,
        "Brazilian Real":3.7927,
        "Canadian dollar":1.3375,
        "Switzerland Franc":0.9964,
        "China Yuan":6.7131,
        "Euro":0.8845,
        "United Kingdom Pound":0.763,
        "Hungarian Forint":279.337,
        "Indian Rupees":68.98,
        "Japanese Yen":110.5194,
        "Kenyan shilling":100.6989,
        "Korean Won":1133.5973,
        "Malawian Kwacha":723.985,
        "New Zealand dollar":1.4558,
        "Oman Riyal":0.385,
        "Tanzanian Shilling":2344.103,
        "Ugandan Shilling":3708.5025,
        "United States Dollar":1,
        "South African Rand":14.3397,
        "Zambian Kwacha":12.029
        }

    variable=tk.StringVar(self.frame)
    variable.set(None)
    self.opt=tk.OptionMenu(self.frame, variable, *RATES, relief='raised', bd=2, width=8, bg='#008085')
    self.opt.grid(row=2, column=2, padx=10, pady=10)



    self.master.mainloop()

cApp=MyApp()

标签： pythonuser-interfacetkinter

解决方案

stovfl 提供的解决方案是正确的，但是将 OptionMenu 的其余配置留在函数中会产生错误，因为具有项目列表的 OptionMenu 的初始化程序不同。因此，您必须使用单独的功能进行配置：

    self.opt=tk.OptionMenu(self.frame, variable, *list(RATES.keys()))
    self.opt.config(relief='raised', bd=2, width=8, bg='#008085')
    self.opt.grid(row=2, column=2, padx=10, pady=10)

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