如何从其HTML代码打印表中存在的空数据? [英] How to print the empty data present in a table from its HTML code?

问题描述

我正在使用python中存在的HTMLParser模块通过通过HTMLParser解析HTML页面来在表中打印数据.我无法在表格中打印空白字段.

I am using the HTMLParser module present in python to print the data in a table by parsing the HTML page through the HTMLParser. I am unable to print the empty field in the table.

这是我正在使用的代码:

Here is the code I'm using:

class MyParser(HTMLParser):
    def __init__(self, data ):
        HTMLParser.__init__(self)
        self.feed(data)
    def handle_data(self, data):
        print "result -->", data

m = MyParser("""<p>105</p><p></p>""")

结果-> 105

我能够在第一个标签<p>105</p>之间打印数据.我想打印第二个标签<p></p>之间存在的空数据.我该怎么办?

I am able to print the data between the first tag <p>105</p>. I want to print the empty data present between the second tag <p></p>. How do I do it?

HTMLPAGE  = """<p>105</p></td><td style="width:50px; word-wrap: break-word;"><p style="width: 8em; padding-left: 0px; padding-right: 0px; margin: 0pt;"></p></td><td style="width:50px; word-wrap: break-word;">"""

我想将数据打印为空字符串(").有帮助吗?..

推荐答案

好吧，如果您确实需要它，请尝试使用handle_endtag:

Well, if you really need this, try using handle_endtag:

class MyParser(HTMLParser):
    def __init__(self, data ):
        HTMLParser.__init__(self)
        self.data = ""
        self.feed(data)
    def handle_data(self, data):
        self.data = data
    def handle_endtag(self, tag, attrs):
        print "result -->", self.data
        self.data = ""

m = MyParser("""<p>105</p><p></p>""")

这样，每次标签结束时，您都将打印其中的数据.但是，这会将<p><p></p></p>视为两次空数据"-在每个标签结束之前.如果这接近(但不完全是)所需，请尝试花一些时间同时使用handle_starttag，这样您的代码就可以按照您希望的方式运行.

This way every time tag ends, you will print the data that was inside. This will, however, treat <p><p></p></p> as two times "empty data" - before every tag ending. If this is close to (but not exactly) what you need, try spending some time on using also handle_starttag, so your code can behave the way you want it to.

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