解析数据集的字符串

Question

我有一个长字符串,其中包含需要分离/提取以供评估的信息集.

作为初学程序员,我知道各种解析操作,如split()append()remove()等 - 但我正在努力想出一种逻辑方法将它们组合起来以提取相关数据......

长串......

"<Sets X="s"><B s="1" e="2176" t="-2.0774E4" r="1" /><B s="2177" e="8982" t="-1.8597E4" r="1" /><B s="8983" e="10393" t="-150.22" r="1" /></Sets>"

包含3组需要存储为浮点值的数据

[Set1] s = 1 e = 2176 t = -20774 r = 1

[Set2] s = 2177 e = 8982 t = -18597 r = 1

[Set3] s = 8983 e = 10393 t = -150.2 r = 1

我想将每组数据存储为列表

Set1 = [1,2176,-20774,1]
Set2 = [2177,8982,-18597,1]
Set3 = [2178,10393,-150.2,1]

注意:套数可以变化

Answer 1

使用内置的ElementTree库从xml中提取数据:

import xml.etree.ElementTree as ET


data = '<Sets X="s"><B s="1" e="2176" t="-2.0774E4" r="1" /><B s="2177" e="8982" t="-1.8597E4" r="1" /><B s="8983" e="10393" t="-150.22" r="1" /></Sets>'

tree = ET.fromstring(data)
for b in tree.findall('.//B'):
     print map(float, itemgetter(*'setr')(b.attrib))

打印:

[1.0, 2176.0, -20774.0, 1.0]
[2177.0, 8982.0, -18597.0, 1.0]
[8983.0, 10393.0, -150.22, 1.0]