Python解析文本文件的选定区域/范围

Question

我想打印文本文件 text.txt 的选定部分，其中包含:

tickme 1.1(no.3)
lesson1-bases
lesson2-advancedfurther
para:using the dsp signals are sened via a transmitter to conver to analong signals and gets the output in the form of digital signal

tickme 2.2(no.4)
lesson1-basics2
lesson2-advanced4
para:using the DIGITAL signals are sened via a transmitter to conver to analong signals and gets the output in the form of digital signal

tickme 3.3(no.5)
lesson1-bas
lesson2-adv
para:using the dsp signals are sened via a transmitter to conver to analong signals and gets the output in the form of digital signal

这里它由 3 个勾号组成，但我想选择一个特定的勾号 2.2(no.4)，我必须在勾号 3.3(no.5) 开始之前解析文本。

所以，如果“DIGITAL”在段落中，它必须打印“lesson1”，因为它会导致歧义，我想选择文本文件的范围。

输出:

lesson1-basics2

由于它有所有tick me通用的第1课，我需要选择特定区域来解析tickme2.2(no.4)到tickme 3.3(no.5)有没有办法获取特定区域的范围并进行解析？并且可能会有大量的数据在刻度之间与示例不同。

问题:它没有选择特定范围。

searchstring = ""
with open('text.txt','r') as file:

    for line in file:
        if 'tickme' in line:
            searchstring = line
        if searchstring != '':
            if 'DIGITAL' in line:
                print(searchstring)
                print(line)

Answer 1

将文件分成多个批处理，如下所示:

with open('txt.txt') as f: 批处理 = []

t = []
for l in line:
    if 'tickme' in l:
        # Start a new bactch after saving the previous batch 
        if t: batches.apend(t)
        t = [l.strip()]
    else:
        if len(l.strip()) > 1: t.append(l.strip())