如何从 python 结果创建“.scr”或“.txt”输出文件

Question

首先，我必须告诉你，我是 python 的绝对菜鸟，并且 开始使用它希望能够创建小的可执行文件 基本工程任务。例如，下面的代码计算跟踪 铁路渐进曲线的坐标：

l=int(input('l='))
r=int(input('r='))
for x in range(0,l+1,2):
    y=round(((x**3)/(6*l*r)),4)
for x in range(0,l+1,2):
    grafic=print(x,",",round(((x**3)/(6*l*r)),4),sep='')

对于给定的变量值，输出：

l=42
r=195
0,0.0
2,0.0002
4,0.0013
6,0.0044
8,0.0104
10,0.0204
12,0.0352
14,0.0558
16,0.0834
18,0.1187
20,0.1628
22,0.2167
24,0.2813
26,0.3577
28,0.4467
30,0.5495
32,0.6668
34,0.7998
36,0.9495
38,1.1166
40,1.3024
42,1.5077

我正在尝试根据该结果创建一个“.scr”或“.txt”文件，它必须是：

pline
0,0.0
2,0.0002
4,0.0013
6,0.0044
8,0.0104
10,0.0204
12,0.0352
14,0.0558
16,0.0834
18,0.1187
20,0.1628
22,0.2167
24,0.2813
26,0.3577
28,0.4467
30,0.5495
32,0.6668
34,0.7998
36,0.9495
38,1.1166
40,1.3024
42,1.5077

我们的想法是创建一个可以在 ACAD 中导入的脚本文件，例如， 它跟踪二维折线的输出。 任何帮助将不胜感激！

Answer 1

您可以使用 Python 的内置 open 函数创建文件：

with open('output.txt', 'w') as outfile:
    outfile.write("pline\n")
    l = int(input('l='))
    r = int(input('r='))
    for x in range(0, l + 1, 2):
        y = round(((x ** 3) / (6 * l * r)), 4)
    for x in range(0, l + 1, 2):
        outfile.write("{},{}\n".format(x, round(((x ** 3) / (6 * l * r)), 4)))

输出

pline
0,0.0
2,0.0002
4,0.0013
6,0.0044
8,0.0104
10,0.0204
12,0.0352
14,0.0558
16,0.0834
18,0.1187
20,0.1628
22,0.2167
24,0.2813
26,0.3577
28,0.4467
30,0.5495
32,0.6668
34,0.7998
36,0.9495
38,1.1166
40,1.3024
42,1.5077

函数outfile.write 将文本写入文件，在上面的示例中为outfile。要写一行，你必须在你写的每个字符串的末尾附加换行符\n。

Answer 2

你可以使用write

1. 以文本文件的形式打开您的文本文件

2. 使用 \n 换行

3. 使用textfile.write