Python：使用 Tkinter 的年龄计算器
先决条件： tkinter 简介
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。它是Python随附的 Tk GUI 工具包的标准Python接口。带有 Tkinter 的Python输出创建 GUI 应用程序的最快和最简单的方法。现在，这取决于开发人员的想象力或必要性，他/她想使用这个工具包开发什么。
创建一个 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。
GUI 如下所示：
让我们创建一个基于 GUI 的简单年龄计算器应用程序，该应用程序可以根据用户给出的给定日期和出生日期计算年龄。
下面是实现：
Python3
# import all functions from the tkinter
from tkinter import *
# import messagebox class from tkinter
from tkinter import messagebox
# Function for clearing the
# contents of all text entry boxes
def clearAll() :
# deleting the content from the entry box
dayField.delete(0, END)
monthField.delete(0, END)
yearField.delete(0, END)
givenDayField.delete(0, END)
givenMonthField.delete(0, END)
givenYearField.delete(0, END)
rsltDayField.delete(0, END)
rsltMonthField.delete(0, END)
rsltYearField.delete(0, END)
# function for checking error
def checkError() :
# if any of the entry field is empty
# then show an error message and clear
# all the entries
if (dayField.get() == "" or monthField.get() == ""
or yearField.get() == "" or givenDayField.get() == ""
or givenMonthField.get() == "" or givenYearField.get() == "") :
# show the error message
messagebox.showerror("Input Error")
# clearAll function calling
clearAll()
return -1
# function to calculate Age
def calculateAge() :
# check for error
value = checkError()
# if error is occur then return
if value == -1 :
return
else :
# take a value from the respective entry boxes
# get method returns current text as string
birth_day = int(dayField.get())
birth_month = int(monthField.get())
birth_year = int(yearField.get())
given_day = int(givenDayField.get())
given_month = int(givenMonthField.get())
given_year = int(givenYearField.get())
# if birth date is greater then given birth_month
# then donot count this month and add 30 to the date so
# as to subtract the date and get the remaining days
month =[31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31]
if (birth_day > given_day):
given_month = given_month - 1
given_day = given_day + month[birth_month-1]
# if birth month exceeds given month, then
# donot count this year and add 12 to the
# month so that we can subtract and find out
# the difference
if (birth_month > given_month):
given_year = given_year - 1
given_month = given_month + 12
# calculate day, month, year
calculated_day = given_day - birth_day;
calculated_month = given_month - birth_month;
calculated_year = given_year - birth_year;
# calculated day, month, year write back
# to the respective entry boxes
# insert method inserting the
# value in the text entry box.
rsltDayField.insert(10, str(calculated_day))
rsltMonthField.insert(10, str(calculated_month))
rsltYearField.insert(10, str(calculated_year))
# 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("Age Calculator")
# Set the configuration of GUI window
gui.geometry("525x260")
# Create a Date Of Birth : label
dob = Label(gui, text = "Date Of Birth", bg = "blue")
# Create a Given Date : label
givenDate = Label(gui, text = "Given Date", bg = "blue")
# Create a Day : label
day = Label(gui, text = "Day", bg = "light green")
# Create a Month : label
month = Label(gui, text = "Month", bg = "light green")
# Create a Year : label
year = Label(gui, text = "Year", bg = "light green")
# Create a Given Day : label
givenDay = Label(gui, text = "Given Day", bg = "light green")
# Create a Given Month : label
givenMonth = Label(gui, text = "Given Month", bg = "light green")
# Create a Given Year : label
givenYear = Label(gui, text = "Given Year", bg = "light green")
# Create a Years : label
rsltYear = Label(gui, text = "Years", bg = "light green")
# Create a Months : label
rsltMonth = Label(gui, text = "Months", bg = "light green")
# Create a Days : label
rsltDay = Label(gui, text = "Days", bg = "light green")
# Create a Resultant Age Button and attached to calculateAge function
resultantAge = Button(gui, text = "Resultant Age", fg = "Black", bg = "Red", command = calculateAge)
# Create a Clear All Button and attached to clearAll function
clearAllEntry = Button(gui, text = "Clear All", fg = "Black", bg = "Red", command = clearAll)
# Create a text entry box for filling or typing the information.
dayField = Entry(gui)
monthField = Entry(gui)
yearField = Entry(gui)
givenDayField = Entry(gui)
givenMonthField = Entry(gui)
givenYearField = Entry(gui)
rsltYearField = Entry(gui)
rsltMonthField = Entry(gui)
rsltDayField = Entry(gui)
# grid method is used for placing
# the widgets at respective positions
# in table like structure .
dob.grid(row = 0, column = 1)
day.grid(row = 1, column = 0)
dayField.grid(row = 1, column = 1)
month.grid(row = 2, column = 0)
monthField.grid(row = 2, column = 1)
year.grid(row = 3, column = 0)
yearField.grid(row = 3, column = 1)
givenDate.grid(row = 0, column = 4)
givenDay.grid(row = 1, column = 3)
givenDayField.grid(row = 1, column = 4)
givenMonth.grid(row = 2, column = 3)
givenMonthField.grid(row = 2, column = 4)
givenYear.grid(row = 3, column = 3)
givenYearField.grid(row = 3, column = 4)
resultantAge.grid(row = 4, column = 2)
rsltYear.grid(row = 5, column = 2)
rsltYearField.grid(row = 6, column = 2)
rsltMonth.grid(row = 7, column = 2)
rsltMonthField.grid(row = 8, column = 2)
rsltDay.grid(row = 9, column = 2)
rsltDayField.grid(row = 10, column = 2)
clearAllEntry.grid(row = 12, column = 2)
# Start the GUI
gui.mainloop()输出 ：