在 css 文件中找到类并用 python 将它们写入新文件

Question

我有一个 .css 文件，没有缩进，有一些类定义。我需要提取所有以 .icon 开头的类，例如：

.icon_arrow:before {
    content="/256"
}

并将它们写入新文件。我尝试读取所有行并在 .icon 和 } 之间写入字符串，如下所示：

infile = open('myfile.css', 'r')
outfile = open('newfile.css', 'w')
copy = False

with infile as css:
    for line in css:
        if line.strip() == ".icon":
            copy = True
        elif line.strip() == '}':
            copy = False
        elif copy:
            outfile.write(line)

但是我得到一个空文件。建议？

Answer 1

我认为这可以解决您的问题：

import re

textfile = open('myfile.css', 'r')
filetext = textfile.read()

matches = re.findall("^\.icon.*\n+.*\n+}", filetext, re.MULTILINE)

print(matches)

outfile = open('newfile.css', 'w')

for match in matches:
  outfile.write(match)

myfile.css

.icon_arrow:before {
    content="/111"
}

.icon_arrow:before {
    content="/222"
}

.icon_arrow:before {
    content="/333"
}

.somethingelse:before {
    content="/444"
}

.somethingelse:before {
    content="/555"
}

print(matches) 将打印：

['.icon_arrow:before {\n    content="/111"\n}', '.icon_arrow:before {\n    content="/222"\n}', '.icon_arrow:before {\n    content="/333"\n}']

Answer 2

最后我解决了：

regex = r"(\.icon\w+.(.*?)\})"
classes = re.findall(regex, infile.read())

for entry in classes:
    outfile.write(entry[0] + '\n')

在 css 文件中找到类并用 python 将它们写入新文件

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在 css 文件中找到 类 并用 python 将它们写入新文件

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在 css 文件中找到类并用 python 将它们写入新文件