Thanks for all of your suggestions. Turns out Marco's first version
was really the one I needed.
Thanks again,
t.
On Mar 26, 12:37 pm, Marco Mariani wrote:
> Marco Mariani wrote:
> >> If the lines are really sorted, all you really need is a merge,
>
> For the archives, and for huge files where
Marco Mariani wrote:
If the lines are really sorted, all you really need is a merge,
For the archives, and for huge files where /usr/bin/diff or difflib are
not appropriate, here it is.
#!/usr/bin/env python
import sys
def run(filea, fileb):
p = 3
while True:
if p&1: a =
On Thu, 26 Mar 2009 07:00:52 -0700, hayes.tyler wrote:
> Hello All:
>
> I am starting to work on a file comparison script where I have to
> compare the contents of two large files.
...
> (and this is why I'm thinking of using
> Python's difflib to work on it)
...
> Any suggestions where to start
hayes.ty...@gmail.com wrote:
Any suggestions where to start?
Start by reading the docs on the difflib module, perform some of
the examples, and attempt to solve it yourself. Once you get in
trouble, show a clear example of what you think went wrong.
--Scott David Daniels
scott.dani...@acm.org
Dave Angel wrote:
If the lines are really sorted, all you really need is a merge,
D'oh. Right. The posted code works on unsorted files. The sorted case is
even simpler as you pointed out.
--
http://mail.python.org/mailman/listinfo/python-list
If the lines are really sorted, all you really need is a merge, where
you read one line from each source, and if equal, read another from
each. If one source is less, output the lesser line with appropriate
tag , and refresh that one from its source. Stop when either source has
run out, and t
First comment, have you looked at the standard module difflib? There's
a sample program diff.py located in tools\scripts that may do what
you need already. It finds the differences in context, and displays
them in a way that's frequently intuitive, showing you what's been
changed, and
On Mar 26, 11:10 am, Marco Mariani wrote:
> Marco Mariani wrote:
> >> while True:
> >> a = filea.readline()
> >> b = fileb.readline()
> >> if not (a or b):
> >> break
>
> BTW, watch out for this break. It might not be what you want :-/
HA! Just found it :P
Marco Mariani wrote:
while True:
a = filea.readline()
b = fileb.readline()
if not (a or b):
break
BTW, watch out for this break. It might not be what you want :-/
--
http://mail.python.org/mailman/listinfo/python-list
hayes.ty...@gmail.com wrote:
My first thought is to do a sweep, where the first sweep takes one
line from f1, travels f2, if found, deletes it from a tmp version of
f2, and then on to the second line, and so on. If not found, it writes
to a file. At the end, if there are also lines still in f1 t
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