Date time regular expression help

[crashhold]

Hello Developers,

I am a beginner in python and need help with writing a regular expression for date and time to be fetched from some html documents. In the following code I am walking through the html files in a folder called event and printing the headings with h1 tag using beautifulsoup. These html pages also contains different formats of date and time. I want to fetch and display this information as well. Different formats of date in these html documents are:

21 - 27 Nov 2012
1 Dec 2012
30 Nov - 2 Dec 2012
26 Nov 2012

Can someone help me out with fetching these formats from these html documents ?
Here is my code for walking through the files and fetching h1 from those html files:


Code:

 
    import re
    import os
    from bs4 import BeautifulSoup
    
    for subdir, dirs, files in os.walk("/home/himanshu/event/"):
        for fle in files:
            path = os.path.join(subdir, fle)    
            soup = BeautifulSoup(open(path))
            
            print (soup.h1.string)
           
            #Date and Time detection

[bvdet]

You can compile a list of struct_time objects using a combination of re and time modules.

import time
import re

patt = re.compile(r"^(\d{1,2}) - (.+)|^(\d{1,2} [a-zA-Z]{3}) - (.+)")

date_format = "%d %b %Y"
date_format1 = "%d %m %Y"

dates = ["21 - 27 Nov 2012", "1 Dec 2012", "30 Nov - 2 Dec 2012", "26 Nov 2012"]

output = []

for d in dates:
    try:
        m = patt.match(d)
        if m:
            if m.groups()[0]:
                end_date = time.strptime(m.groups()[1], date_format)
                output.append((time.strptime("%s %s %s" % (m.groups()[0],
                                                           end_date.tm_mon,
                                                           end_date.tm_year),
                                             date_format1), end_date))
            elif m.groups()[2]:
                end_date = time.strptime(m.groups()[3], date_format)
                output.append((time.strptime("%s %s" % (m.groups()[2],
                                                        end_date.tm_year),
                                             date_format), end_date))
        else:
            output.append(time.strptime(d, date_format))
    except ValueError, e:
        print "ValueError:", e
        
for item in output:
    if isinstance(item, tuple):
        print "  From:", item[0]
        print "    To:", item[1]
    else:
        print item