提取两个定义文本之间的文本信息 [英] Extract text information between two define text

问题描述

我有一个很大的文本文件，其中包含很多文本信息，但是我想在两个定义的文本之间提取文本. 例如

I have big text file which has lot of text information but I would like to extract the text between two defined text. e.g

    /begin MEASUREMENT XYZ
        UBYTE
        _CNV_A_R_LINEAR_____71_CM
        1
        100.
        -40.
        160.
        FORMAT "%3.0"
        SYMBOL_LINK "XYZ" 0
/begin IF_DATA EVTRKMNBXERTBK 
    DEFAULT_RASTERS 3 3
/end IF_DATA 
    /end MEASUREMENT

即在这之间我要提取文本/开始测量和/结束测量.

i.e /begin MEASUREMENT and /end MEASUREMENT in between this I want to extract text.

我的代码是:

import re
path = r"d:\xyz.txt"
file = open(path, 'r')
lines = file.read()
pattern = re.compile(r'begin MEASUREMENT[\s][\w+](.*?)end MEASUREMENT')
print re.findall(pattern, lines)

推荐答案

使用(?s)，这将多行视为单行.因此，点匹配所有字符，包括换行符.

Use (?s), this is consider multiple line as a single line. So dot match all characters including newlines.

pattern = re.compile(r'(?s)begin MEASUREMENT[\s](.*?)end MEASUREMENT')

所以尝试一下，

import re
path = "py.txt"
file = open(path, 'r')
lines = file.read()
pattern = re.compile(r'(?s)begin MEASUREMENT[\s](.*?)end MEASUREMENT')
result = re.findall(pattern, lines)
print result[0]

已编辑

t = "XYZ"
pattern = re.compile(r'(?s)begin MEASUREMENT\s+((%s).*?)end MEASUREMENT'%t)

这篇关于提取两个定义文本之间的文本信息的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！