python formatter模块

formatter 模块
formatter 模块提供了一些可用于 htmllib 的格式类( formatter classes ).
这些类有两种, formatter 和 writer . formatter 将 HTML 解析器的标签和数据流转换为适合输出设备的事件流( event stream ), 而 writer 将事件流输出到设备上.
大多情况下, 你可以使用 AbstractFormatter 类进行格式化. 它会根据不同的格式化事件调用 writer 对象的方法. AbstractWriter 类在每次方法调用时打印一条信息.
使用 formatter 模块将 HTML 转换为事件流
!/usr/bin/python
import formatter
import htmllib
w=formatter.AbstractWriter() ＃writer将事件流输出到设备上
f=formatter.AbstractFormatter(w) ＃formatter将HTML解析器的标签和数据流转换为适合输出的事件流
file=open("index.html")
p=htmllib.HTMLParser(f)
p.feed(file.read())
p.close()
file.close()
运行结果：
windyang@windyang-desktop:~/python$ python formatter-example-1.py
send_flowing_data('\xa0')
send_line_break()
send_paragraph(1)
new_font(('h1', 0, 1, 0))
send_flowing_data('Dive Into Python')
send_line_break()
send_paragraph(1)
new_font(None)
send_flowing_data('Python from novice to pro')
send_line_break()
send_paragraph(1)
send_flowing_data('Find:')
send_flowing_data('\xa0')
send_line_break()
send_paragraph(1)
new_font(('h2', 0, 1, 0))
new_font(None)
new_font((None, 1, None, None))
send_flowing_data('Dive Into')
send_flowing_data(' Python')
new_font(None)
send_flowing_data(' is a free')
send_flowing_data(' Python')
send_flowing_data(' book for experienced programmers. You can')
send_flowing_data(' read the book')
send_flowing_data('[1]')
send_flowing_data(' online, or')
send_flowing_data(' download it')
send_flowing_data('[2]')
send_flowing_data(' in a variety of formats. It is also available in')
send_flowing_data(' multiple languages')
send_flowing_data('[3]')
send_flowing_data('.')
send_line_break()
send_paragraph(1)
new_font(('h2', 0, 1, 0))
send_flowing_data('Read')
send_flowing_data(' ')
new_font(('h2', 1, 1, 0))
send_flowing_data('Dive Into')
send_flowing_data(' Python')
new_fo