Python读取两个字符串之间的特定行文本

Question

我无法通过python读取特定行。什么我的工作是这样的：

lines of data not needed 
lines of data not needed 
lines of data not needed 

-------------------------------------- 
    ***** REPORT 1 ***** 
-------------------------------------- 

[key] lines of interest are here 
[key] lines of interest are here 
[key] lines of interest are here 
[key] lines of interest are here 
[key] lines of interest are here  #This can also be the EOF 

--------------------------------------  
    ***** REPORT 2 ***** 
-------------------------------------- 

lines of data not needed 
lines of data not needed 
lines of data not needed   #Or this will be the EOF 

我已经尝试了一些诸如：

flist = open("filename.txt").readlines() 

for line in flist: 
    if line.startswith("\t**** Report 1"): 
    break 
for line in flist: 
    if line.startswith("\t**** Report 2"): 
    break 
    if line.startswith("[key]"): 
    #do stuff with data 

不过，我有一个问题，当该文件没有结束定界符结束。例如，当报告＃2未显示时。什么是更好的方法？

Answer 1

一个轻微的修正，它看起来像它应该包括你的问题：

flist = open("filename.txt").readlines() 

parsing = False 
for line in flist: 
    if line.startswith("\t**** Report 1"): 
     parsing = True 
    elif line.startswith("\t**** Report 2"): 
     parsing = False 
    if parsing: 
     #Do stuff with data 

如果你想避免解析行“*报告1” ......本身，简单地把开始状态之后， if parsing，即

flist = open("filename.txt").readlines() 

parsing = False 
for line in flist: 

    if line.startswith("\t**** Report 2"): 
     parsing = False 
    if parsing: 
     #Do stuff with data 
    if line.startswith("\t**** Report 1"): 
     parsing = True