使用正则表达式搜索报价 [英] Search for quotes with regular expression

问题描述

我正在寻找一种方法来搜索文本文件中作者的报价，然后将其打印出来.到目前为止，我的脚本是:

I'm looking for a way to search a text file for quotes made by author and then print them out. My script so far:

import re

    #searches end of string 
    print re.search('"$', 'i am searching for quotes"')

    #searches start of string 
    print re.search('^"' , '"i am searching for quotes"')

我想做什么

import re

## load text file
quotelist = open('A.txt','r').read()

## search for strings contained with quotation marks
re.search ("-", quotelist)

## Store in list or Dict
Dict = quotelist

## Print quotes 
print Dict

我也尝试过

import re

buffer = open('bbc.txt','r').read()

quotes = re.findall(r'.*"[^"].*".*', buffer)
for quote in quotes:
  print quote

# Add quotes to list

 l = []
    for quote in quotes:
    print quote
    l.append(quote)

推荐答案

开发一个正则表达式，该表达式与您希望在带引号的字符串中看到的所有预期字符匹配.然后在re中使用python方法findall查找所有匹配项.

Develop a regular expression that matches all the expected characters you would expect to see inside of a quoted string. Then use the python method findall in re to find all occurrences of the match.

import re

buffer = open('file.txt','r').read()

quotes = re.findall(r'"[^"]*"',buffer)
for quote in quotes:
  print quote

在和"之间进行搜索需要unicode-regex搜索，例如:

Searching between " and " requires a unicode-regex search such as:

quotes = re.findall(ur'"[^\u201d]*\u201d',buffer)

对于使用和"交替使用来终止引号的文档

And for a document that uses " and " interchangeably for quotation termination

quotes = re.findall(ur'"[^"^\u201d]*["\u201d]', buffer)

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