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!'
I also tried to create a ^M^L (typed in as <ctrl>Q M <ctrlQ> L) but that gives me a syntax error when I try to run the program (re does not like the control characters, I guess). Is it possible for me to pull out the formfeeds in a straightforward manner?
What's happening is that you're using .match, so you're only checking for matches at the _start_ of the string, not anywhere within it.
It's easier than you think actually; you're just looking for substrings, so searching with .find on strings is probably sufficient:
if line.find('\f') >= 0: ...If you want to look for ^M^L, that'd be '\r\f':
if line.find('\r\f') >= 0: ...If you want to keep a running count, you can use .count, which will count the number of substrings in the line.
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