Iam new to this mailing list as well as python(uptime-3 weeks).Today I learnt about RE from http://www.amk.ca/python/howto/regex/.This one was really helpful. I started working out with few examples on my own. The first one was to collect all the HTML tags used in an HTML file. I wrote this code.
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import re
file1=open(raw_input("\nEnter The path of the HTML file: "),"r")
ans=""
while 1:
data=""> if data=""> break
ans=ans+data
ans1=re.sub(r' .*?',">",ans) # to make tags such as <link rel..> to <link>rel
match=re.findall(r'<[^/]?[a-zA-Z]+.*?>',ans1)
print match
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I get the output but with tags repeated. I want to display all the tags used in a file ,but no repetitions.Say the output to one of the HTML file I got was : "<html><link> <a><br><a><br>"
Instead of writing a new 'for,if' loop to filter the repetetive tags from the list, is there something that I can add in the re itself to match the pattern only once?
Thank You
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Intercodes
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