使用 Python-Tkinter 的 GST Rate Finder GUI

先决条件： tkinter 简介 |计算 GST 的程序
Python为开发 GUI（图形用户界面）提供了多种选择。在所有的 GUI 方法中，Tkinter 是最常用的方法。在本文中，我们将学习如何使用 Tkinter 创建 GST Rate Finder GUI 应用程序，并提供分步指南。

创建 Tkinter：

导入模块 – tkinter
创建主窗口（容器）
将任意数量的小部件添加到主窗口。
在小部件上应用事件触发器。

下面是 GUI 的样子：

让我们创建一个基于 GUI 的 GST Rate Finder 应用程序：

下面是实现：

Python3

# import all functions/classes from the tkinter   
from tkinter import *
  
# Function for finding GST rate
def findGst() :
  
    # take a value from the respective entry boxes
    # get method returns current text as string
    org_cost= int(org_priceField.get())
     
    N_price = int(net_priceField.get())
  
    # calculate GST rate
    gst_rate = ((N_price - org_cost) * 100) / org_cost;
  
    # insert method inserting the  
    # value in the text entry box.
    gst_rateField.insert(10, str(gst_rate) + " % ")
    
      
# Function for clearing the  
# contents of all text entry boxes
def clearAll():
      
      
    # deleting the content from the entry box
    org_priceField.delete(0, END)
      
    net_priceField.delete(0, END)
      
    gst_rateField.delete(0, END)
      
  
# Driver Code
if __name__ == "__main__" :
  
    # Create a GUI window
    gui = Tk()
    
    # Set the background colour of GUI window  
    gui.configure(background = "light green")
    
    # set the name of tkinter GUI window 
    gui.title("GST Rate Finder")
    
    # Set the configuration of GUI window
    gui.geometry("300x300")
  
    # Create a Original Price: label 
    org_price = Label(gui, text = "Original Price",
                      bg = "blue")
    
    # Create a Net Price : label
    net_price = Label(gui, text = "Net Price",
                      bg = "blue")
  
    # Create a Find Button and attached to
    # findGst function
    find = Button(gui, text = "Find", fg = "Black",
                  bg = "Red",
                  command = findGst)
      
    # Create a Gst Rate : label 
    gst_rate = Label(gui, text = "Gst Rate", bg = "blue")
  
    # Create a Clear Button and attached to
    # clearAll function
    clear = Button(gui, text = "Clear", fg = "Black",
                   bg = "Red",
                   command = clearAll)
  
    # grid method is used for placing  
    # the widgets at respective positions  
    # in table like structure .
  
    # padx attributed provide x-axis margin 
    # from the root window to the widget.
  
    # pady attributed provide y-axis
    # margin from the widget.
    org_price.grid(row = 1, column = 1,padx = 10,pady = 10)
                   
    net_price.grid(row = 2, column = 1, padx = 10, pady = 10)
     
    find.grid(row = 3, column = 2,padx = 10,pady = 10)
      
    gst_rate.grid(row = 4, column = 1,padx = 10, pady = 10)
      
    clear.grid(row = 5, column = 2, padx = 10, pady = 10)
  
    # Create a text entry box for filling or typing the information.  
    org_priceField = Entry(gui)
      
    net_priceField = Entry(gui)
      
    gst_rateField = Entry(gui)
  
    # grid method is used for placing  
    # the widgets at respective positions  
    # in table like structure .
    org_priceField.grid(row = 1, column = 2 ,padx = 10,pady = 10)
      
    net_priceField.grid(row = 2, column = 2, padx = 10,pady = 10)
      
    gst_rateField.grid(row = 4, column = 2, padx = 10,pady = 10)
      
    # Start the GUI
    gui.mainloop()

输出：