Looking for Form Feeds
fredrik at pythonware.com
Mon Jan 24 22:43:38 CET 2005
Greg Lindstrom wrote:
> I have a file generated by an HP-9000 running Unix containing form feeds signified by ^M^L. I am
> trying to scan for the linefeed to signal certain processing to be performed but can not get the
> regex to "see" it. Suppose I read my input line into a variable named "input"
> The following does not seem to work...
> input = input_file.readline()
> if re.match('\f', input): print 'Found a formfeed!'
> else: print 'No linefeed!'
>>> line = "\r\f"
>>> re.match("\f", line)
>>> re.search("\f", line)
<_sre.SRE_Match object at 0x00B380C8>
>>> re.match("\r\f", line)
<_sre.SRE_Match object at 0x00B38988>
in this case, it's probably better to use the "in" operator:
if "\f" in line:
print "found a line feed"
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