python regular expression

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    #1

    python regular expression

    I am trying to edit a bunch of files that are similar. I want to remove all
    the ASP code that appears before the <HTML> tag. Can some one help me with a
    regex that can replace everything before the <HTML> tag with nothing?




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    • Andrew Dalke
      #2
      Re: python regular expression

      eddie:[color=blue]
      > Can some one help me with a
      > regex that can replace everything before the <HTML> tag with nothing?[/color]
      [color=blue][color=green][color=darkred]
      >>> pat = re.compile(r"^( (?!<HTML).)*", re.IGNORECASE | re.DOTALL)
      >>> pat.sub("", "junk\n<HTML>st uff")[/color][/color][/color]
      '<HTML>stuff'[color=blue][color=green][color=darkred]
      >>> pat.sub("", " <html>stuff")[/color][/color][/color]
      '<html>stuff'[color=blue][color=green][color=darkred]
      >>>[/color][/color][/color]


      Andrew
      dalke@dalkescie ntific.com


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        • Peter Hansen
          #3
          Re: python regular expression

          eddieNOSPAM@edd iecentral.net wrote:[color=blue]
          >
          > I am trying to edit a bunch of files that are similar. I want to remove all
          > the ASP code that appears before the <HTML> tag. Can some one help me with a
          > regex that can replace everything before the <HTML> tag with nothing?[/color]

          stuff = 'whatever ASP blah\nblah <HTML>more blah blah</HTML>maybe even more'
          try:
          shortStuff = stuff[stuff.index('<H TML>'):]
          except:
          shortStuff = stuff

          No regex required...

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            • Gary Herron
              #4
              Re: python regular expression

              On Friday 21 November 2003 03:03 pm, eddieNOSPAM@edd iecentral.net wrote:[color=blue]
              > I am trying to edit a bunch of files that are similar. I want to remove all
              > the ASP code that appears before the <HTML> tag. Can some one help me with
              > a regex that can replace everything before the <HTML> tag with nothing?[/color]

              You don't need a regular expression for that. Just find the index of
              the first occurrence of <HTML> and slice away.

              i = data.find('<HTM L>') # i=-1 means not found
              if (i != -1)
              data = data[i:]

              Gary Herron



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