python - 从字符串中提取信息并转换为列表

Question

我有一个如下的字符串:

[Base Font : IOHLGA+Trebuchet, Font Size : 3.5324998, Font Weight : 0.0] [(X=250.44,Y=223.48499) height=3.5324998 width=4.2910004]DECEMBER 31,

[Base Font : IOFOEO+Imago-Book, Font Size : 3.876, Font Weight : 0.0] [(X=307.5,Y=240.48499) height=3.876 width=2.9970093]respectively. The net decrease in the revenue

[Base Font : IOHLGA+Trebuchet, Font Size : 3.5324998, Font Weight : 0.0] [(X=49.5,Y=233.98499) height=3.5324998 width=2.5690002](US$ in millions)

我想提取“X”的值和关联的文本并将其转换为列表。请查看下面的预期输出:

预期输出:

['X=250.44','DECEMBER 31,']
['X=307.5','respectively. The net decrease in the revenue']
['X=49.5','(US$ in millions)']

我们如何在 Python 中解决这个问题？

我的方法:

mylist = []
for line in data.split("\n"):
    if line.strip():
        x_coord = re.findall('^(X=.*)\,$', line)
        text = re.findall('^(]\w +)', line)
        mylist.append([x_coord, text])

我的方法没有为 x_coord 和 text 识别任何值。

Answer 1

重新解决方案:

import re

input = [
    "[Base Font : IOHLGA+Trebuchet, Font Size : 3.5324998, Font Weight : 0.0] [(X=250.44,Y=223.48499) height=3.5324998 width=4.2910004]DECEMBER 31,",
    "[Base Font : IOFOEO+Imago-Book, Font Size : 3.876, Font Weight : 0.0] [(X=307.5,Y=240.48499) height=3.876 width=2.9970093]respectively. The net decrease in the revenue",
    "[Base Font : IOHLGA+Trebuchet, Font Size : 3.5324998, Font Weight : 0.0] [(X=49.5,Y=233.98499) height=3.5324998 width=2.5690002](US$ in millions)",
]

def extract(s):
    match = re.search("(X=\d+(?:\.\d*)?).*?\](.*?)$",s)
    return match.groups()

output = [extract(item) for item in input]
print(output)

输出:

[
    ('X=250.44', 'DECEMBER 31,'),
    ('X=307.5', 'respectively. The net decrease in the revenue'),
    ('X=49.5', '(US$ in millions)'),
]

解释:

• \d ... 数字
• \d+ ... 一个或多个数字
• (?:...) ... 非捕获(“正常”)括号
• \.\d* ... 点后跟零个或多个数字
• (?:\.\d*)? ... 可选(零或一)“小数部分”
• (X=\d+(?:\.\d*)?) ... 第一组，X=number
• .*? ...零个或多个任意字符(非贪婪)
• \] ... ] 符号
• $ ... 字符串结束
• \](.*?)$ ... 第二组，] 和字符串结尾之间的任何内容