替换nltk字符串

Question

为什么替换不能使用此字符串？

[＆＃39; Python \ xc3 \ xa9 uma linguagem de programa \ xc3 \ xa7 \ xc3 \ xa3o de alto n \ xc3 \ xadvel＆＃39;]

上面的字符串来自nltk，请遵循以下代码：

# - * - coding: utf-8 - * -

import nltk

text = 'Python is a high-level programming language'

val = str(nltk.tokenize.sent_tokenize (text))
val = val.replace('\xc3\xa9', 'é')
print val

Answer 1

试试这个：

var myMappedImages = document.getElementsByClassName("myMappedImage");
for(var i=0,len=myMappedImages.length;i<len;i++){
    myMappedImages[i].usemap = "#myimagemap";
}

或

val = val.replace(r'\xc3\xa9', 'é')

因为val = val.replace('\\xc3\\xa9', 'é') 是转义字符。

What exactly do “u” and “r” string flags do in Python, and what are raw string literals?这可能会有所帮助。