用Python中的turtle 绘图，绘制表示年、月、日、时、分、秒的七段数码管

以下是绘制七段数码管的Python代码：

import turtle

# 定义每个数码管的绘制函数
def draw_segment(x, y, width, height):
    turtle.penup()
    turtle.goto(x, y)
    turtle.pendown()
    turtle.setheading(0)
    turtle.forward(width)
    turtle.setheading(90)
    turtle.forward(height)
    turtle.setheading(180)
    turtle.forward(width)
    turtle.setheading(270)
    turtle.forward(height)
    turtle.penup()

# 定义每个数字的七段数码管布局
digit_layout = {
    0: [(0, 0), (0, 40), (40, 0), (40, 40), (0, -40), (40, -40)],
    1: [(20, 0), (20, 40), (20, -40)],
    2: [(0, 0), (40, 0), (40, 20), (0, -20), (0, -40), (40, -40)],
    3: [(0, 0), (40, 0), (40, 40), (0, -20), (40, -20)],
    4: [(0, 0), (0, 20), (40, 20), (40, 0), (40, -40)],
    5: [(0, 0), (40, 0), (40, -20), (0, 20), (0, -40), (40, -40)],
    6: [(0, 0), (0, 20), (40, 20), (40, 0), (0, -40), (40, -40)],
    7: [(0, 0), (40, 0), (20, 40), (20, -40)],
    8: [(0, 0), (0, 20), (40, 20), (40, 0), (0, -20), (40, -20), (0, -40), (40, -40)],
    9: [(0, 0), (40, 0), (40, 20), (0, 20), (0, -20), (40, -20), (40, -40)]
}

# 绘制整个七段数码管
def draw_digit(x, y, digit):
    turtle.color('red')
    for segment in digit_layout[digit]:
        draw_segment(x + segment[0], y + segment[1], 20, 20)

# 绘制年月日时分秒
def draw_datetime(year, month, day, hour, minute, second):
    turtle.tracer(False)
    turtle.clear()
    turtle.penup()
    turtle.goto(-200, 0)
    draw_digit(0, 0, year // 1000)
    draw_digit(50, 0, (year // 100) % 10)
    draw_digit(100, 0, (year // 10) % 10)
    draw_digit(150, 0, year % 10)
    draw_segment(200, 20, 20, 20)
    draw_segment(200, -20, 20, 20)
    draw_digit(250, 0, month // 10)
    draw_digit(300, 0, month % 10)
    draw_segment(350, 20, 20, 20)
    draw_segment(350, -20, 20, 20)
    draw_digit(400, 0, day // 10)
    draw_digit(450, 0, day % 10)
    draw_segment(500, 20, 20, 20)
    draw_segment(500, -20, 20, 20)
    draw_digit(550, 0, hour // 10)
    draw_digit(600, 0, hour % 10)
    draw_segment(650, 20, 20, 20)
    draw_segment(650, -20, 20, 20)
    draw_digit(700, 0, minute // 10)
    draw_digit(750, 0, minute % 10)
    draw_segment(800, 20, 20, 20)
    draw_segment(800, -20, 20, 20)
    draw_digit(850, 0, second // 10)
    draw_digit(900, 0, second % 10)
    turtle.tracer(True)

# 使用当前系统时间绘制七段数码管
import time
while True:
    now = time.localtime()
    draw_datetime(now.tm_year, now.tm_mon, now.tm_mday, now.tm_hour, now.tm_min, now.tm_sec)
    time.sleep(1)

运行后，会不断更新屏幕上显示的七段数码管，以显示当前的时间。其中 `draw_datetime()` 函数接受年、月、日、时、分、秒六个参数，分别表示当前时间的各个部分。使用 `time.localtime()` 函数获取当前系统时间，并传递给 `draw_datetime()` 函数进行绘制。