用Python画图，缓解乏味的学习（上）.....

# 多边形的绘制案例
import turtle
def main():
    turtle.color("green")
# steps代表多边形的绘制
    turtle.circle(50,steps=6)
    turtle.exitonclick()
if __name__ == "__main__":
    main()

# 太阳花案例*******************************************************************
import turtle
import time
turtle.color("red","yellow")
turtle.begin_fill()
for _ in range(50):
    turtle.speed(0)
    turtle.forward(200)
    turtle.left(170)
    turtle.end_fill()
turtle.mainloop()

# 颜色五角星案例******************************************************************
import turtle
import time
turtle.pensize(5)
turtle.pencolor("yellow")
turtle.fillcolor("red")
turtle.begin_fill()
for _ in range(5):
    turtle.forward(200)
    turtle.right(144)
turtle.end_fill()
time.sleep(2)
turtle.penup()
turtle.goto(-150,-120)
turtle.color("violet")
turtle.write("Done",font=("Arial"))
turtle.mainloop()

# 艺术图片*************************************************************************
import turtle
turtle.speed(0)
turtle.delay(0)
turtle.pensize(2)
turtle.bgcolor("black")
colors=["red","blue","yellow","purple"]
for x in range(300):
    turtle.color(colors[x%4])
    turtle.forward(2*x)
    turtle.left(91)
turtle.done()

# #黑六边形*****************************************************************************
import turtle
def bye(x,y):
    turtle.bye()
s = turtle.Screen()
s.bgcolor("black")
s.screensize(800,800)
s.title("Class Using")
s.onscreenclick(bye)
p=turtle.Turtle()
p.speed(0)
p.hideturtle()
p.pencolor("red")
p.pensize(3)
p.circle(50,360,6)
turtle.done()

#绘制时钟************************************************************************************************
import turtle as tt
from datetime import *
# 当前日期属于一周的第几天
def Week(t):
    week = ["星期一", "星期二", "星期三", "星期四", "星期五", "星期六", "星期日"]
    return week[t.weekday()]
# 获取当前时间
def Date(t):
    y = t.year
    m = t.month
    d = t.day
    cur_hour = t.hour;
    cur_min = t.minute;
    cur_sec = t.second;
    return "%s-%d-%d %d:%02d:%02d" % (y, m, d, cur_hour, cur_min, cur_sec)
# 移动画笔,距离为distance
def movePen(distance):
    tt.penup()
    tt.pensize(5)
    tt.pencolor("blue")
    tt.fd(distance)
    tt.pendown()
# 绘制表针
def makeHands(name, length):
    # 清空窗口，重置turtule状态为初始状态
    tt.reset()
    movePen(-length * 0.1)
    # 开始记录多边形的顶点
    tt.begin_poly()
    tt.fd(length * 1.1)
    # 停止记录多边形的顶点
    tt.end_poly()
    # 返回记录的多边形
    handForm = tt.get_poly()
    tt.register_shape(name, handForm)
# 初始化
def initial():
    global secHand, minHand, hurHand, printer
    # 重置方向向北(上)，正角度为顺时针
    tt.mode("logo")
    # 建立并初始化表针
    makeHands("secHand", 180)
    makeHands("minHand", 150)
    makeHands("hurHand", 110)
    secHand = tt.Turtle()
    secHand.shape("secHand")
    minHand = tt.Turtle()
    minHand.shape("minHand")
    hurHand = tt.Turtle()
    hurHand.shape("hurHand")
    for hand in secHand, minHand, hurHand:
        hand.shapesize(1, 1, 4)
        hand.speed(0)
    # 输出文字
    printer = tt.Turtle()
    # 隐藏画笔
    printer.hideturtle()
    printer.penup()
# 绘制表盘外框
def drawClock(R):
    # 清空窗口，重置turtule状态为初始状态
    tt.reset()
    # 画笔尺寸
    tt.pensize(5)
    for i in range(60):
        movePen(R)
        if i % 5 == 0:
            tt.fd(20)
            movePen(-R - 20)
            movePen(R + 20)
            if i == 0:
                # 写文本
                tt.write(int(12), align="center", font=("Consolas", 14, "bold"))
            elif i == 30:
                movePen(25)
                tt.write(int(i / 5), align="center", font=("Consolas", 14, "bold"))
                movePen(-25)
            elif (i == 25 or i == 35):
                movePen(20)
                tt.write(int(i / 5), align="center", font=("Consolas", 14, "bold"))
                movePen(-20)
            else:
                tt.write(int(i / 5), align="center", font=("Consolas", 14, "bold"))
            movePen(-R - 20)
        else:
            # 绘制指定半径和颜色的点
            tt.dot(5, "red")
            movePen(-R)
        tt.right(6)
# 表针的动态显示
def handsMove():
    t = datetime.today()
    second = t.second + t.microsecond * 0.000001
    minute = t.minute + second / 60.0
    hour = t.hour + minute / 60.0
    secHand.seth(6 * second)
    minHand.seth(6 * minute)
    hurHand.seth(30 * hour)
    tt.tracer(False)
    printer.fd(65)
    tt.pencolor("green")
    printer.write(Week(t), align="center", font = ("黑体", 14))
    printer.back(130)
    printer.write(Date(t), align="center", font = ("Consolas", 14))
    # 设置当前画笔位置为原点，方向朝东
    printer.home()
    tt.tracer(True)
    # 经过100ms后继续调用handsMove函数
    tt.ontimer(handsMove, 100)
# 调用定义的函数，打开和关闭动画，为更新图纸设置延迟；
tt.tracer(False)
initial()
drawClock(200)
tt.tracer(True)
handsMove()
tt.mainloop()