正在分析成绩单。将srt文件转换为可读文本

Question

我有一个视频记录SRT文件，其中有常规SRT格式的行。下面是一个示例：

1
00:00:00,710 --> 00:00:03,220
Lorem ipsum dolor sit amet
consectetur, adipisicing elit.

2
00:00:03,220 --> 00:00:05,970
Dignissimos et quod laboriosam
iure magni expedita

3
00:00:05,970 --> 00:00:09,130
nisi, quis quaerat. Rem, facere!

我正在尝试使用python读取然后解析此文件，删除（或跳过）包含数字字符串的行（例如，SKIP'1'

Lorem ipsum dolor sit amet concetetur，adipising elit。要有尊严，就必须有足够的劳动力，才能胜任工作。雷，脸儿！

这是我到目前为止提出的代码：

def main():
    # Access folder in filesystem

    # After parsing content of file, move to next file

    # Declare variable empty list
    lineList = []

    # read file line by line
    file = open( "/Sample-SRT-File.srt", "r")
    lines = file.readlines()
    file.close()

    # look for patterns and parse

    # Remove blank lines from file
    lines = [i for i in lines if i[:-1]]

    # Discount first and second line of each segment using a match pattern
    for line in lines:
        line = line.strip()
        if isinstance(line[0], int) != False:

            # store all text into a list
            lineList.append(line)

    # for every item in the list that ends with '', '.', '?', or '!', append a space at end
    for line in lineList:
        line = line + ' '

    # Finish with list.join() to bring everything together
    text = ''.join(lineList)
    print(text)

main()

我对我的Python很不熟悉，但现在我想知道有效和可靠地匹配段的第一行和第二行以进行删除或跳过的唯一方法是否是使用正则表达式。否则，使用itertools库或某种会跳过第1行的函数可能会这样做

有没有人用巨蟒的动作来帮助我克服这个问题？

Answer 1

感谢python 3，因为它不需要额外的导入

text =" "
with open(file,'r') as f:
    for line in f:
        if  not line[0].isdigit():
            text+= " " + line.replace('\n','')
            text = text.lstrip()

Answer 2

如果你想使用正则表达式过滤掉数字行和空行，你可以使用这个：

import re

def main():
    # read file line by line
    file = open( "sample.srt", "r")
    lines = file.readlines()
    file.close()

    text = ''
    for line in lines:
        if re.search('^[0-9]+$', line) is None and re.search('^[0-9]{2}:[0-9]{2}:[0-9]{2}', line) is None and re.search('^$', line) is None:
            text += ' ' + line.rstrip('\n')
        text = text.lstrip()
    print(text)

main()

这将输出：

Lorem ipsum dolor sit amet consectetur, adipisicing elit. Dignissimos et quod laboriosam iure magni expedita nisi, quis quaerat. Rem, facere!

Answer 3

我只会使用像pysrt这样的库来解析srt文件。这应该被证明是最健壮的。

import pysrt
subs = pysrt.open("foo.srt")

for sub in subs:
    print(sub.text)
    print()

输出：

Lorem ipsum dolor sit amet
consectetur, adipisicing elit.

Dignissimos et quod laboriosam
iure magni expedita

nisi, quis quaerat. Rem, facere!