> -----Original Message-----
> From: [EMAIL PROTECTED] [mailto:python-
> [EMAIL PROTECTED] On Behalf Of ryan k
> Sent: Wednesday, January 23, 2008 3:24 PM
> To: [email protected]
> Subject: Re: Stripping whitespace
>
> On Jan 23, 3:02 pm, John Machin <[EMAIL PROTECTED]> wrote:
> > On Jan 24, 6:57 am, ryan k <[EMAIL PROTECTED]> wrote:
> >
> > > So yea i will just have to count dashes.
> >
> > Read my lips: *you* counting dashes is dumb. Writing your code so
> that
> > *code* is counting dashes each time it opens the file is smart.
>
> Okay it's almost working ...
>
Why is it that so many Python people are regex adverse? Use the dashed
line as a regex. Convert the dashes to dots. Wrap the dots in
parentheses. Convert the whitespace chars to '\s'. Presto! Simpler,
cleaner code.
import re
state = 0
header_line = ''
pattern = ''
f = open('a.txt', 'r')
for line in f:
if line[-1:] == '\n':
line = line[:-1]
if state == 0:
header_line = line
state += 1
elif state == 1:
pattern = re.sub(r'-', r'.', line)
pattern = re.sub(r'\s', r'\\s', pattern)
pattern = re.sub(r'([.]+)', r'(\1)', pattern)
print pattern
state += 1
headers = re.match(pattern, header_line)
if headers:
print headers.groups()
else:
state = 2
m = re.match(pattern, line)
if m:
print m.groups()
f.close()
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