ImportError：没有名为图形的模块

Question

我尝试了一个需要图形包的图形算法，所以我导入了图形代码在这里

from graphics import *
import time

def BresenhamLine(x1,y1,x2,y2):
    """ Bresenham Line Drawing Algorithm For All Kind Of Slopes Of Line """

    dx = abs(x2 - x1)
    dy = abs(y2 - y1)
    slope = dy/float(dx)

    x, y = x1, y1   

    # creating the window
    win = GraphWin('Brasenham Line', 600, 480)

    # checking the slope if slope > 1 
    # then interchange the role of x and y
    if slope > 1:
        dx, dy = dy, dx
        x, y = y, x
        x1, y1 = y1, x1
        x2, y2 = y2, x2

    # initialization of the inital disision parameter
    p = 2 * dy - dx

    PutPixle(win, x, y)

    for k in range(2, dx):
        if p > 0:
            y = y + 1 if y < y2 else y - 1
            p = p + 2*(dy - dx)
        else:
            p = p + 2*dy

        x = x + 1 if x < x2 else x - 1

        # delay for 0.01 secs
        time.sleep(0.01)
        PutPixle(win, x, y)

def PutPixle(win, x, y):
    """ Plot A Pixle In The Windows At Point (x, y) """
    pt = Point(x,y)
    pt.draw(win)

def main():
    x1 = int(input("Enter Start X: "))
    y1 = int(input("Enter Start Y: "))
    x2 = int(input("Enter End X: "))
    y2 = int(input("Enter End Y: "))

    BresenhamLine(x1, y1, x2, y2)

if __name__ == "__main__":
    main()

但是当我执行这段代码时，它给了我这个错误

python app.py 
Traceback (most recent call last):
  File "app.py", line 1, in <module>
    from graphics import *
ImportError: No module named graphics

所以我尝试从 pip 安装图形包，但我也失败了。

sudo pip install graphics
Downloading/unpacking graphics
  Could not find any downloads that satisfy the requirement graphics
Cleaning up...
No distributions at all found for graphics
Storing debug log for failure in /home/ubuntu/.pip/pip.log

如何纠正这个错误？

Answer 1

单击此处显示的链接。 https://mcsp.wartburg.edu/zelle/python/graphics.py 现在按照这个：选择所有文本数据>复制>保存（在工作文件夹中）>graphics.py>输入。创建一个类似 的新文件，编写代码并测试它。

Answer 2

您必须下载this file 并将其与您的脚本放在同一个文件夹中。

来自文档字符串：

安装：将此文件放在 Python 可以看到的地方。