python从microsoft word中提取文本

Question

我正在尝试提取MS word文档（link）下面示例中特定部分的文本。基本上，我需要将所有带有标记-- ASN1START和-- ASN1STOP的文本写入一个不包含上述标记的文件

示例文本

-- ASN1START

CounterCheck ::=            SEQUENCE {
    rrc-TransactionIdentifier           RRC-TransactionIdentifier,
    criticalExtensions                  CHOICE {
        c1                                  CHOICE {
            counterCheck-r8                     CounterCheck-r8-IEs,
            spare3 NULL, spare2 NULL, spare1 NULL
        },
        criticalExtensionsFuture            SEQUENCE {}
    }
}

CounterCheck-r8-IEs ::= SEQUENCE {
    drb-CountMSB-InfoList               DRB-CountMSB-InfoList,
    nonCriticalExtension                CounterCheck-v8a0-IEs               OPTIONAL
}

CounterCheck-v8a0-IEs ::= SEQUENCE {
    lateNonCriticalExtension            OCTET STRING                        OPTIONAL,
    nonCriticalExtension                CounterCheck-v1530-IEs              OPTIONAL
}

CounterCheck-v1530-IEs ::= SEQUENCE {
    drb-CountMSB-InfoListExt-r15        DRB-CountMSB-InfoListExt-r15        OPTIONAL,   -- Need ON
    nonCriticalExtension                SEQUENCE {}                         OPTIONAL
}

DRB-CountMSB-InfoList ::=       SEQUENCE (SIZE (1..maxDRB)) OF DRB-CountMSB-Info

DRB-CountMSB-InfoListExt-r15 ::=    SEQUENCE (SIZE (1..maxDRBExt-r15)) OF DRB-CountMSB-Info

DRB-CountMSB-Info ::=   SEQUENCE {
    drb-Identity                    DRB-Identity,
    countMSB-Uplink                 INTEGER(0..33554431),
    countMSB-Downlink               INTEGER(0..33554431)
}

-- ASN1STOP

我试过使用docx

from docx import *
import re
import json

fileName = './data/36331-f80.docx'
document = Document(fileName)

startText = re.compile(r'-- ASN1START')

for para in document.paragraphs:
    # look for each paragraph
    text = para.text
    print(text)
    # if startText.match(para.text):
    #     print(text)

似乎上面提到的每一行标签都是一个段落。我需要帮助提取标签中的文本

Answer 1

您可以尝试先将所有文档/段落文本读入单个字符串，然后使用re.findall查找目标标记之间的所有匹配文本：

text = ""
for para in document.paragraphs:
    text += para.text + "\n"

matches = re.findall(r'  ASN1START\s*(.*?)\s*  ASN1STOP', text, flags=re.DOTALL)

注意，我们在正则表达式中使用DOT-ALL模式，以确保.*可以匹配跨换行出现的标记之间的内容