Question

我想将e1，e2，e3，e4中的用户输入用作Data（）类的类参数。我尝试创建一个函数get_args（），但是它只返回空字符串，因为必须采取用户操作才能真正显示输入。接受用户输入并将其用作功能参数的最佳方法是什么？

d = Data()




import tkinter as tk
from hist import Data

def quit(root):
    root.destroy()

#def get_args():
    #return e1.get(), e2.get(),e3.get(), e4.get()

def show_entry_fields():
    print("Ticker: %s\nStart Date: %s\nEnd Date: %s\nBasis: %s" % (e1.get(), e2.get(),e3.get(),e4.get()))


root = tk.Tk()



tk.Label(root, text="Ticker").grid(row=0)
tk.Label(root, text="Start Date").grid(row=1)
tk.Label(root, text="End Date").grid(row=2)
tk.Label(root, text="Basis").grid(row=3)

e1 = tk.Entry(root)
e2 = tk.Entry(root)
e3 = tk.Entry(root)
e4 = tk.Entry(root)


e1.grid(row=0, column=1)
e2.grid(row=1, column=1)
e3.grid(row=2, column=1)
e4.grid(row=3, column=1)



#Data = Data(get_args())
#Ticker = d.get_histocial_prices()

tk.Button(root, text='Show', command=show_entry_fields).grid(row=4, column=1, sticky=tk.W, pady=4)


tk.Button(root, text='Quit', command=root.quit).grid(row=4, column=0, sticky=tk.W, pady=4)
#tk.Button(root, text='Show', command=Ticker).grid(row=4, column=2, sticky=tk.W, pady=4)
root.mainloop()

Answer 1

您可以在global函数中将变量定义为get_args()，

import tkinter as tk
from hist import Data

def get_args():
    global ticker, start_date, end_date, basics

    ticker = e1.get()
    start_date = e2.get()
    end_date = e3.get()
    basics = e4.get()
    # print variables and initialize Data
    init_data()

def init_data():
    print("Ticker: %s\nStart Date: %s\nEnd Date: %s\nBasis: %s" % (ticker, start_date,end_date,basics))
    global d
    d = Data(ticker, start_date, end_date, basics)

root = tk.Tk()

tk.Label(root, text="Ticker").grid(row=0)
tk.Label(root, text="Start Date").grid(row=1)
tk.Label(root, text="End Date").grid(row=2)
tk.Label(root, text="Basis").grid(row=3)

e1 = tk.Entry(root)
e2 = tk.Entry(root)
e3 = tk.Entry(root)
e4 = tk.Entry(root)

e1.grid(row=0, column=1)
e2.grid(row=1, column=1)
e3.grid(row=2, column=1)
e4.grid(row=3, column=1)

tk.Button(root, text='get entries', command=get_args).grid(row=4, column=1, sticky=tk.W, pady=4)

root.mainloop()

在tkinter中将用户输入用作函数参数

1 个答案: