介绍

需要美观打印(pretty-printing)的情况下,可以使用textwrap模块格式化要输出的文本。

它提供了很多文本编辑器和字符处理器中都有的段落自动换行或填充特性

填充段落

import textwrap

text = '''
There are moments in life when you miss someone
so much that you just want to pick them
from your dreams and hug them for real! Dream what
you want to dream;go where you want to go;
be what you want to be,because you have
only one life and one chance to do all the things you want to do.
'''
# fill函数取文本作为输入,生成格式化文本作为输出
# width表示宽度为50
print(textwrap.fill(text, width=50))
'''
There are moments in life when you miss
someone so much that you just want to pick
them from your dreams and hug them for real!
Dream what you want to dream;go where you
want to go; be what you want to be,because you
have only one life and one chance to do all
the things you want to do.
'''

结果不是太让人满意。文本虽然已经对齐,不过只有第一行保留了缩进,后面各行的空格则嵌入在段落中

去除现有的缩进

import textwrap

text = '''
There are moments in life when you miss someone
so much that you just want to pick them
from your dreams and hug them for real! Dream what
you want to dream;go where you want to go;
be what you want to be,because you have
only one life and one chance to do all the things you want to do.
''' # 关于刚才的例子,其输出中混合嵌入了制表符和额外的空格,所以格式不是太美观。
# 用dedent可以去除示例文本中所有的行前面的空白符,这会生成更好的结果
# 并且允许在Python代码中直接使用docstring或者内嵌的多行字符串,同时去除代码本身的格式。
print(textwrap.dedent(text).strip())
'''
There are moments in life when you miss someone
so much that you just want to pick them
from your dreams and hug them for real! Dream what
you want to dream;go where you want to go;
be what you want to be,because you have
only one life and one chance to do all the things you want to do.
'''

可以看到dedent作用就是把每一行开头的缩进给去掉

结合dedent和fill

import textwrap

text = '''
There are moments in life when you miss someone
so much that you just want to pick them
from your dreams and hug them for real! Dream what
you want to dream;go where you want to go;
be what you want to be,because you have
only one life and one chance to do all the things you want to do.
''' # 先去除缩进,然后填充,每行长度60个字符
dedent_text = textwrap.dedent(text).strip()
print(textwrap.fill(dedent_text, width=60))
'''
There are moments in life when you miss someone so much
that you just want to pick them from your dreams and hug
them for real! Dream what you want to dream;go where you
want to go; be what you want to be,because you have only
one life and one chance to do all the things you want to do.
'''

缩进块

import textwrap

text = '''
There are moments in life when you miss someone
so much that you just want to pick them
from your dreams and hug them for real! Dream what
you want to dream;go where you want to go;
be what you want to be,because you have
only one life and one chance to do all the things you want to do.
'''
# 可以使用indent函数为一个字符串的所有行增加一致的前缀文本
dedent_text = textwrap.dedent(text).strip()
final_text = textwrap.indent(dedent_text, ">>>")
print(final_text)
'''
>>>There are moments in life when you miss someone
>>>so much that you just want to pick them
>>>from your dreams and hug them for real! Dream what
>>>you want to dream;go where you want to go;
>>>be what you want to be,because you have
>>>only one life and one chance to do all the things you want to do.
''' # 除此之外还可以给指定行添加
final_text = textwrap.indent(dedent_text, prefix="->", predicate=lambda line: len(line.strip()) > 40)
print(final_text)
'''
->There are moments in life when you miss someone
so much that you just want to pick them
->from your dreams and hug them for real! Dream what
->you want to dream;go where you want to go;
be what you want to be,because you have
->only one life and one chance to do all the things you want to do.
'''
# 显然lambda里面的line就是每一行的文本,指定文本长度大于40的

悬挂缩进

import textwrap

text = '''
There are moments in life when you miss someone
so much that you just want to pick them
from your dreams and hug them for real! Dream what
you want to dream;go where you want to go;
be what you want to be,because you have
only one life and one chance to do all the things you want to do.
'''
# 不仅可以设置输出的宽度,还可以采用同样的方式单独控制首行的缩进,使首行的缩进不同于后续的各行
dedent_text = textwrap.dedent(text).strip()
print(textwrap.fill(dedent_text,
initial_indent="",
subsequent_indent=" "*4,
width=50))
'''
There are moments in life when you miss someone
so much that you just want to pick them from
your dreams and hug them for real! Dream what
you want to dream;go where you want to go; be
what you want to be,because you have only one
life and one chance to do all the things you
want to do.
'''
# 这便可以生成悬挂缩进,即首行缩进小于其他行的缩进
# 缩进值也可以包含非空白字符。
print(textwrap.fill(dedent_text,
initial_indent="", # 首行缩进
subsequent_indent="*"*4, # 首行之外的行缩进
width=50))
'''
There are moments in life when you miss someone
****so much that you just want to pick them from
****your dreams and hug them for real! Dream what
****you want to dream;go where you want to go; be
****what you want to be,because you have only one
****life and one chance to do all the things you
****want to do.
'''

截断长文本

import textwrap

text = '''
There are moments in life when you miss someone
so much that you just want to pick them
from your dreams and hug them for real! Dream what
you want to dream;go where you want to go;
be what you want to be,because you have
only one life and one chance to do all the things you want to do.
'''
dedent_text = textwrap.dedent(text).strip()
print(textwrap.shorten(dedent_text, width=50)) # There are moments in life when you miss [...]

textwrap:格式化文本段落的更多相关文章

  1. WPF 语言格式化文本控件

    前言 本章讲述正确添加语言资源的方式,以及一段语言资源的多种样式显示. 例如:“@Winter,你好!感谢已使用软件 800 天!” 在添加如上多语言资源项时,“XX,你好!感谢已使用软件 X 天!” ...

  2. jQuery文本段落展开和折叠效果

    <!DOCTYPE html> <head> <meta http-equiv="Content-Type" content="text/h ...

  3. 解决方案:带格式化文本控件( RichText)的模板如果在InfoPath的浏览器中加载可能出现 COM 组件的80040154错误

      建议大家在微软的组件出现问题时,在GOOGLE上搜索解决方案,一般来说,总有结果:  带格式化文本控件( RichText)的模板如果在InfoPath的浏览器中加载,可能出现 COM 组件的80 ...

  4. python中用xpath匹配文本段落内容的技巧

    content = item.xpath('//div[@class="content"]/span')[0].xpath('string(.)') content = item. ...

  5. c# 正则格式化文本防止SQL注入

    /// <summary> /// 格式化文本(防止SQL注入) /// </summary> /// <param name="str">&l ...

  6. python中使用%与.format格式化文本

    初学python,看来零零碎碎的格式化文本的方法,总结一下python中格式化文本的方法.使用不当的地欢迎指出谢谢. 1.首先看使用%格式化文本 常见的占位符: 常见的占位符有: %d 整数 %f 浮 ...

  7. 格式化文本数据抽取工具awk

    在管理和维护Linux系统过程中,有时可能需要从一个具有一定格式的文本(格式化文本)中抽取数据,这时可以使用awk编辑器来完成这项任务.发明这个工具的作者是Aho.Weinberg和Kernighan ...

  8. jQuery 文本段落展开和折叠效果

    jQuery 文本段落展开和折叠效果 <!DOCTYPE html> <head> <meta http-equiv="Content-Type" c ...

  9. 【python cookbook】【字符串与文本】16.以固定的列数重新格式化文本

    问题:重新格式化一些很长的字符串,以指定的列数来显示 解决方案:textwrap模块的fill()方法来实现 # A long string s = "Look into my eyes, ...

随机推荐

  1. 如何写resultful接口

    一.协议 API与客户端用户的通信协议,总是使用HTTPS协议,以确保交互数据的传输安全. 二.域名 应该尽量将API部署在专用域名之下: https://api.example.com 如果确定AP ...

  2. Java日志体系(六)log4j2

    1.1 简介 log4j2,一个日志的实现框架,是log4j的升级版本,于2014年7月正式亮相.与第一代log4j不同,log4j2完全重写了log4j的日志实现,并不是在原有基础上进行的升级,解决 ...

  3. 【Linux】部署NTP时间同步服务器

    1. 查看机器的Linux版本 查看集群内所有服务器的linux版本,确保相同,不要跨大版本. [root@bigdata111 ~]# cat /etc/redhat-release CentOS ...

  4. 3-3 man手册介绍

    man手册介绍 内容表示的意义: 各部分功能说明: SECTION: name:命令的名称及功能描述: SYNOPSIS:命令使用格式摘要: DESCRIPTION:详细描述信息: OPTIONS:选 ...

  5. Vue对象提供的属性功能

    一. 过滤器 过滤器,就是vue允许开发者自定义的文本格式化函数,可以使用在两个地方:输出内容和操作数据中. 定义过滤器的方式有两种: 1. 使用Vue.filter()进行全局定义 示例: < ...

  6. 深入理解C语言-深入理解数组

    数组,作为C语言中常见的复杂数据类型,了解其本质有助于深入了解C语言 数组概念 元素类型角度:数组是相同类型的变量的有序集合测试指针变量占有内存空间大小 内存角度:联系的一大片内存空间 数组初始化 数 ...

  7. java 8 Base64用法

    Java 8的java.util套件中,新增了Base64的类别,可以用来处理Base64的编码与解码,用法如下: final Base64.Decoder decoder = Base64.getD ...

  8. Node流操作(启动器forever)

    详情: https://www.cnblogs.com/lalalagq/p/9749680.html 流:读取流,写入流,双向读写流. 读写流——压缩.加密 数据库不能直接接受流 sf.readFi ...

  9. The import javax.websocket cannot be resolved的解决问题

    在eclipse中导入项目的时候出现了这个问题,废了我半天劲,才搞明白,把问题记录下来,方便大家以后遇到这问题好处理.提供参考. 出现的问题截图: 因为我用的是tomcat8, 大体步骤:项目上点右键 ...

  10. SQLite进阶-12.Distinct关键字

    目录 DISTINCT关键字 DISTINCT关键字 DISTINCT关键字与SELECT语句一起使用,用来消除重复数据,获得唯一数据. -- 语句 SELECT DISTINCT column1, ...