Python练习题（五）

tkinter 多线程计时器、Label、Button

import tkinter as tk
from threading import Thread, Event

hour = 0


class ControlThread(Thread):
    def __init__(self):
        self._stop_event = Event()
        Thread.__init__(self)

    def run(self):
        f1()

    def terminate(self):
        self._stop_event.set()

    def stopped(self):
        return self._stop_event.is_set()


def f1():  # 计时
    def count():
        global hour
        global x
        hour += 1
        hour %= 24
        label_hour.config(text=str(hour))
        x = label_hour.after(3600, count)
    count()


def run():
    global t1
    t1 = ControlThread()
    t1.start()


def stop():
    global t1
    label_hour.after_cancel(x)
    t1.terminate()


root = tk.Tk()

root.title("time")

label_time = tk.Label(root, text="时刻(h)")
label_time.grid(row=0, column=0, columnspan=3)

label_hour = tk.Label(root, bg="lightblue", height=2, width=10)
label_hour.grid(row=0, column=0, columnspan=3)

button_run = tk.Button(root, text="Run", command=run)
button_run.grid(row=1, column=0)

button_stop = tk.Button(root, text="Stop", command=stop)
button_stop.grid(row=1, column=2)

root.mainloop()

tkinter Text、Button、messagebox

import tkinter as tk
from tkinter import messagebox


def submit():
	'''get(1.0, tk.END)是从第一个字符读到末尾,假设输入为A-B'''
	inputs = text_input.get(1.0, tk.END).replace('\n', '').split('-')

	result = []
	for i in result:
		result.append(i)
	print(result)

	messagebox.showinfo("Info", "Submit Successfully.")  # 第一个字符串是弹窗标题,第二个字符串是弹窗内容

	text_input.delete(1.0, tk.END)  # 清空文本框的输入


root = tk.Tk()

root.title("input&submit")

text_input = tk.Text(root, bg="yellow", height=2, width=10)
text_input.grid(row=0, column=0, columnspan=3)

button_ok = tk.Button(root, text="OK", command=submit)
button_ok.grid(row=1, column=1)

root.mainloop()

tkinter Canvas

import tkinter as tk

x = {
    'A': 120, 'F': 360, 'I': 680, 'J': 760,
    'B': 40, 'E': 200, 'H': 600, 'K': 840,
    'C': 280, 'G': 520, 'D': 440, 'L': 920
}
y = {
    'A': 440, 'F': 200, 'I': 360, 'J': 40,
    'B': 280, 'E': 120, 'H': 280, 'K': 200,
    'C': 360, 'G': 120, 'D': 440, 'L': 360
}

root = tk.Tk()

root.title("canvas")

canvas_map = tk.Canvas(root, bg="lightgray", height=480, width=960)
canvas_map.grid(row=0, column=1, rowspan=20)

'''x轴,虚线'''
canvas_map.create_line(0, 240, 960, 240, dash=(4, 4))
'''y轴,虚线'''
canvas_map.create_line(480, 0, 480, 480, dash=(4, 4))

'''绘制不同位置的四个点'''
canvas_map.create_oval(x['C']-10, y['C']-10, x['C']+10, y['C']+10, fill="lightgreen")
canvas_map.create_text(x['C'], y['C'], text="C", font=10)
canvas_map.create_oval(x['E']-10, y['E']-10, x['E']+10, y['E']+10, fill="lightgreen")
canvas_map.create_text(x['E'], y['E'], text="E", font=10)
canvas_map.create_oval(x['F']-10, y['F']-10, x['F']+10, y['F']+10, fill="lightgreen")
canvas_map.create_text(x['F'], y['F'], text="F", font=10)
canvas_map.create_oval(x['J']-10, y['J']-10, x['J']+10, y['J']+10, fill="lightgreen")
canvas_map.create_text(x['J'], y['J'], text="J", font=10)

'''绘制不同颜色的实线连线'''
canvas_map.create_line(x['C'], y['C'], x['E'], y['E'], fill="yellow")
canvas_map.create_line(x['E'], y['E'], x['F'], y['F'], fill="blue")
canvas_map.create_line(x['F'], y['F'], x['J'], y['J'], fill="red")

root.mainloop()