码迷,mamicode.com
首页 > 编程语言 > 详细

【456】python string 类内容(去除文本标点)

时间:2020-02-07 19:10:15      阅读:93      评论:0      收藏:0      [点我收藏+]

标签:desc   scribe   amp   form   https   cal   oca   concat   The   

主要用于 NLP 处理,里面存在一些常量列表,包括数字、字母、大写字母、小写字母、标点符号、空格等。

参考:6.1. string — Common string operations

可以用于删除文本中的标点符号,将标点符号 replace 为 空。

>>> import string
>>> string.punctuation
‘!"#$%&\‘()*+,-./:;<=>?@[\\]^_`{|}~‘
>>> string.digits
‘0123456789‘
>>> string.ascii_letters
‘abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ‘
>>> string.ascii_lowercase
‘abcdefghijklmnopqrstuvwxyz‘
>>> string.ascii_uppercase
‘ABCDEFGHIJKLMNOPQRSTUVWXYZ‘
>>> string.hexdigits
‘0123456789abcdefABCDEF‘
>>> string.printable
‘0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ!"#$%&\‘()*+,-./:;<=>?@[\\]^_`{|}~ \t\n\r\x0b\x0c‘
>>> string.whitespace
‘ \t\n\r\x0b\x0c‘

6.1.1. String constants

The constants defined in this module are:

string.ascii_letters

The concatenation of the ascii_lowercase and ascii_uppercase constants described below. This value is not locale-dependent.

string.ascii_lowercase

The lowercase letters ‘abcdefghijklmnopqrstuvwxyz‘. This value is not locale-dependent and will not change.

string.ascii_uppercase

The uppercase letters ‘ABCDEFGHIJKLMNOPQRSTUVWXYZ‘. This value is not locale-dependent and will not change.

string.digits

The string ‘0123456789‘.

string.hexdigits

The string ‘0123456789abcdefABCDEF‘.

string.octdigits

The string ‘01234567‘.

string.punctuation

String of ASCII characters which are considered punctuation characters in the C locale.

string.printable

String of ASCII characters which are considered printable. This is a combination of digits, ascii_letters, punctuation, and whitespace.

string.whitespace

A string containing all ASCII characters that are considered whitespace. This includes the characters space, tab, linefeed, return, formfeed, and vertical tab.

【456】python string 类内容(去除文本标点)

标签:desc   scribe   amp   form   https   cal   oca   concat   The   

原文地址:https://www.cnblogs.com/alex-bn-lee/p/12273817.html

(0)
(1)
   
举报
评论 一句话评论(0
登录后才能评论!
© 2014 mamicode.com 版权所有  联系我们:gaon5@hotmail.com
迷上了代码!