如何用Python绘制七段数码管

你可以使用Python的turtle模块来绘制七段数码管。以下是一个绘制数字1的示例代码：

import turtle

def draw_segment(length, angle):
    turtle.pendown()
    turtle.forward(length)
    turtle.right(angle)
    turtle.penup()

def draw_number_1():
    # Segment A
    draw_segment(50, 90)
    
    # Segment B
    turtle.right(90)
    draw_segment(100, 90)
    
    # Segment C
    turtle.right(180)
    draw_segment(50, 90)
    
    # Segment D
    turtle.right(90)
    draw_segment(100, 180)
    
    turtle.left(90)
    turtle.forward(50)

turtle.penup()
turtle.goto(-200, 0)
draw_number_1()
turtle.mainloop()

你可以在上面的代码中修改角度和长度，以绘制不同数字的七段数码管。

相关问题

用python绘制七段数码管

下面是一个简单的用Python绘制七段数码管的示例代码：

import turtle

# 定义数字0-9的七段数码管的线段坐标
segments = [
    [(0, 60), (-30, 30), (30, 30), (0, 60), (0, 0), (30, -30), (-30, -30), (0, 0)],
    [(-20, 50), (20, 50), (10, 40), (-10, 40), (-20, 50), (-20, 10), (20, 10)],
    [(20, 50), (20, 30), (-20, 30), (-20, 10), (20, 10), (20, -10), (-20, -10)],
    [(20, 30), (20, 50), (-20, 50), (-20, 30), (-20, 10), (20, 10), (20, -10), (-20, -10)],
    [(0, 60), (-30, 30), (-30, -30), (0, 0), (30, -30), (30, 30)],
    [(20, 50), (-20, 50), (-20, 30), (20, 30), (20, 10), (-20, 10), (-20, -10), (20, -10)],
    [(0, 60), (-30, 30), (-30, -30), (0, 0), (30, -30), (30, 30), (0, 30)]
]

# 定义绘制七段数码管的函数
def draw_digit(digit):
    turtle.penup()
    turtle.goto(0, 0)
    turtle.pendown()
    for i in range(7):
        if i in [0, 3, 6]:
            turtle.penup()
        else:
            turtle.pendown()
        if i == 0 and digit in [2, 3, 5, 6, 7, 8, 9]:
            turtle.pendown()
        if i == 3 and digit in [0, 1, 2, 3, 4, 7, 8, 9]:
            turtle.pendown()
        if i == 6 and digit in [0, 2, 3, 5, 6, 8, 9]:
            turtle.pendown()
        x, y = segments[i][0]
        turtle.goto(x, y)
        for j in range(1, len(segments[i])):
            x, y = segments[i][j]
            turtle.goto(x, y)
    turtle.penup()

# 测试绘制函数
turtle.speed(0)
turtle.pensize(5)
turtle.hideturtle()

for i in range(10):
    draw_digit(i)
    turtle.penup()
    turtle.goto((i + 1) * 80, 0)
    turtle.pendown()

turtle.done()

该代码使用turtle库绘制七段数码管。首先定义了数字0-9的七段数码管的线段坐标，然后定义了绘制七段数码管的函数。该函数使用turtle库的画笔移动和画笔抬起/放下命令绘制数码管的每一条线段。

最后，测试绘制函数并用循环绘制数字0-9的七段数码管。运行代码后，将会得到如下图所示的结果：


python绘制七段数码管

以下是使用Python绘制七段数码管的示例代码：

import turtle

# 定义数码管各段的绘制函数
def draw_segment(segment, length):
    turtle.setheading(0)
    turtle.penup()
    turtle.forward(length/2)
    turtle.pendown()
    if segment == 0:
        turtle.setheading(90)
        turtle.forward(length)
    elif segment == 1:
        turtle.setheading(45)
        turtle.forward(length/1.41)
        turtle.setheading(225)
        turtle.forward(length/1.41)
    elif segment == 2:
        turtle.setheading(135)
        turtle.forward(length/1.41)
        turtle.setheading(-45)
        turtle.forward(length/1.41)
    elif segment == 3:
        turtle.setheading(180)
        turtle.forward(length)
    elif segment == 4:
        turtle.setheading(-90)
        turtle.forward(length)
    elif segment == 5:
        turtle.setheading(-45)
        turtle.forward(length/1.41)
        turtle.setheading(45)
        turtle.forward(length/1.41)
    elif segment == 6:
        turtle.setheading(45)
        turtle.forward(length/1.41)
        turtle.setheading(135)
        turtle.forward(length/1.41)
    turtle.penup()
    turtle.goto(0, 0)
    turtle.pendown()

# 绘制数字0-9的函数
def draw_digit(digit, length):
    segments = [[0,1,2,4,5,6],[2,5],[0,2,3,4,6],[0,2,3,5,6],[1,2,3,5],[0,1,3,5,6],[0,1,3,4,5,6],[0,2,5],[0,1,2,3,4,5,6],[0,1,2,3,5,6]]
    for segment in segments[digit]:
        draw_segment(segment, length)

# 主程序
turtle.speed(0)
turtle.hideturtle()
turtle.bgcolor("black")
turtle.color("white")
length = 100
turtle.penup()
turtle.goto(-length*2, 0)
turtle.pendown()
draw_digit(1, length)
turtle.penup()
turtle.goto(0, 0)
turtle.pendown()
draw_digit(2, length)
turtle.penup()
turtle.goto(length*2, 0)
turtle.pendown()
draw_digit(3, length)
turtle.done()

这段代码将在窗口中绘制数字1、2、3的七段数码管。你可以根据需要修改代码来绘制其他数字。在代码中，`draw_segment()`函数根据传入的参数绘制数码管的各个段，`draw_digit()`函数根据传入的数字调用`draw_segment()`函数绘制相应的数字，而主程序则使用Turtle库绘制窗口、设置背景色和画笔颜色，并调用`draw_digit()`函数绘制数字。