使用python2.x在windows中选择两行之间的所有行

Question

这是我试图操纵的数据。你知道吗

开始放映功能

功能名称实例状态

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bash shell 1已禁用

bfd 1禁用

bgp 1已禁用

节目结束功能

我正在尝试获取两行之间的数据。你知道吗

下面是一个powershell示例

$from = ($switchinfo | Select-String -pattern "start of show feature" | Select-Object LineNumber).LineNumber
$to   = ($switchinfo | Select-String -pattern "end of show feature" | Select-Object LineNumber).LineNumber -gt $from

$a = $switchinfo | where {$_.readcount -gt $from -and $_.readcount -lt $to}

到目前为止，我已经为python2.7.12准备了这个

fromStr = 'start of show feature'

with open(filename) as myFile:
    for num, line in enumerate(myFile, 1):
        if fromStr in line:
            fromline = num

toString = 'end of show feature'

with open(filename) as myFile:
    for num, line in enumerate(myFile, 1):
        if toString in line:
            toline = num

f=open(filepath)
lines=f.readlines()
print lines[toline]

注意：filepath是一个变量，它是文件的完整路径和文件名本身。你知道吗

print lines[toline]

作品

print lines[fromline]

作品

print lines[fromline..toline]

不起作用，它出错了。我想知道在这方面能否得到一些帮助。 我已经提到这个Reading specific lines only (Python) 和 Python read specific lines of text between two strings（这可能会有帮助，但是） 但是不行。你知道吗

如果将提取的数据/行存储到变量中，也会有很大帮助。你知道吗

Answer 1

filename = "somepath/somefilename.txt"
f=open(filename )
lines=f.readlines()

fromStr = 'start of show feature'

with open(filename) as myFile:
    for num, line in enumerate(myFile, 1):
        if fromStr in line:
            fromline = num

toString = 'end of show feature'

with open(filename) as myFile:
    for num, line in enumerate(myFile, 1):
        if toString in line:
            toline = num

store =  lines[fromline:toline+1] 
cutstore = '\n'.join(store)
print cutstore

多亏了skycc&drjohn，我才找到了这个解决方案。你知道吗

Answer 2

print lines[fromline..toline]

怎么样：

print lines[fromline:toline] 

It would also greatly help if the extracted data/lines are stored into a variable. doesnt work, it errors out.

你是怎么做到的？你犯了什么错误？你知道吗