On May 25, 6:51 am, Jia Lu <Roka...@gmail.comwrote:
Hi all
I'm trying to parsing html with re module.
html = """
<TABLE BORDER=1 cellspacing=0 cellpadding=2>
<TR>
<TH nowrap>DATA1</TH><TH nowrap>DATA2</HT><TH nowrap>DATA3</
HT><TH>DATA4</TH>
</TR>
<TR><TD>DATA5</TD><TD>DATA6</TD><TD>DATA7</TD><TD>DATA8</TD></TR>
</TABLE>
"""
I want to get DATA1-8 from that string.(DATA maybe not english words.)
Can anyone tell me how to do it with regular expression in python?
Thank you very much.
# example1.py
# This example will print out more than what's in the HTML table. It
would also print
# out text between <body></bodytags, and so on.
import HTMLParser
class DataParser(HTMLParser.HTMLParser):
def handle_data (self, data):
data = data.strip()
if data:
print data
html = '''
<TABLE BORDER=1 cellspacing=0 cellpadding=2>
<TR>
<TH nowrap>DATA1</TH><TH nowrap>DATA2</HT><TH nowrap>DATA3</
HT><TH>DATA4</TH>
</TR>
<TR><TD>DATA5</TD><TD>DATA6</TD><TD>DATA7</TD><TD>DATA8</TD></TR>
</TABLE>
'''
parser = DataParser()
parser.feed(html)
parser.close()
example1.py output:
$ python example1.py
DATA1
DATA2
DATA3
DATA4
DATA5
DATA6
DATA7
DATA8
# example2.py
# This example uses the re module to pull out only the table portions
of HTML. This
# should only print out data between <table></tabletags. Notice that
there is some
# data between the <body></bodytags that is not present in the
output.
import HTMLParser
import re
class DataParser(HTMLParser.HTMLParser):
def handle_data (self, data):
data = data.strip()
if data:
print data
html = '''
<html>
<head></head>
<body>
body data 1
<table>
<tr><td>table 1 data 1</td></tr>
<tr><td>table 1 data 2</td></tr>
</table>
<table>
<tr><td>table 2 data 1</td></tr>
<tr><td>table 2 data 2</td></tr>
</table>
body data 2
</body>
</html>
'''
tables_list = re.findall('<table>.*?</table>', html, re.DOTALL |
re.IGNORECASE)
tables_html = str.join(' ', tables_list)
parser = DataParser()
parser.feed(tables_html)
parser.close()
example2.py output:
$ python example2.py
table 1 data 1
table 1 data 2
table 2 data 1
table 2 data 2
# example3.py
# This example does basically the same thing as example2.py, but it
uses HTMLParser
# to keep track of whether the data is between <table></tabletags.
import HTMLParser
class DataParser(HTMLParser.HTMLParser):
def __init__ (self):
HTMLParser.HTMLParser.__init__(self)
self.table_count = 0
def handle_starttag (self, tag, attrs):
if tag == 'table':
self.table_count += 1
def handle_endtag (self, tag):
if tag == 'table':
self.table_count -= 1
def handle_data (self, data):
data = data.strip()
if data and self.table_count 0:
print data
html = '''
<html>
<head></head>
<body>
body data 1
<table>
<tr><td>table 1 data 1</td></tr>
<tr><td>table 1 data 2</td></tr>
</table>
<table>
<tr><td>table 2 data 1</td></tr>
<tr><td>table 2 data 2</td></tr>
</table>
body data 2
</body>
</html>
'''
parser = DataParser()
parser.feed(html)
parser.close()
example3.py output:
$ python example3.py
table 1 data 1
table 1 data 2
table 2 data 1
table 2 data 2
