«

On Monday, February 25, 2013 10:15:24 PM UTC-8, Dave Angel wrote:
> On 02/25/2013 10:48 PM, eli m wrote:
>
> > On Friday, February 15, 2013 7:22:41 PM UTC-8, eli m wrote:
>
> >> Any small program ideas? I would prefer to stick to command line ones. Thanks.
>
> >
>
> > Thank you guys for the suggestions. Any more?
>
> >
>
>
>
> There are all kinds of things you could do. First, consider something
>
> that might be useful.
>
>
>
> 1) checksum all the files in a directory tree, using various checksum
>
> algorithms.
>
>
>
> 2) Convert one kind of file to another.
>
>
>
> 3) Calculate time between two dates
>
>
>
> 4) Write some part of a backup system. For example, copy files from a
>
> directory tree into a specified directory, stopping when the size totals
>
> N.N gig, and keeping track of which files have been so processed, so
>
> that after burning that directory to DVD, you can repeat the process.
>
> As a bonus, add a utility & datafile to the top of that directory, so
>
> that the DVD can be self-checking.
>
>
>
> Then try something interesting:
>
>
>
> 1) find the nth prime, for example the 1000th prime
>
>
>
> 2) Find all perfect numbers under a trillion
>
>
>
> 3) solve the puzzles on http://projecteuler.net
>
>
>
> 4) Build a spell checker, using a combination of a standard
>
> dictionary-list and custom entries. Bonus question - Make it smart
>
> enough to only spell-check comments and literal strings, when applied to
>
> files with an extension of .py
>
>
>
>
>
> --
>
> DaveA

How hard would it be to change one file to another and would it be a small-medium sized program?

On Monday, February 25, 2013 10:15:24 PM UTC-8, Dave Angel wrote:
> On 02/25/2013 10:48 PM, eli m wrote:
>
> > On Friday, February 15, 2013 7:22:41 PM UTC-8, eli m wrote:
>
> >> Any small program ideas? I would prefer to stick to command line ones. Thanks.
>
> >
>
> > Thank you guys for the suggestions. Any more?
>
> >
>
>
>
> There are all kinds of things you could do. First, consider something
>
> that might be useful.
>
>
>
> 1) checksum all the files in a directory tree, using various checksum
>
> algorithms.
>
>
>
> 2) Convert one kind of file to another.
>
>
>
> 3) Calculate time between two dates
>
>
>
> 4) Write some part of a backup system. For example, copy files from a
>
> directory tree into a specified directory, stopping when the size totals
>
> N.N gig, and keeping track of which files have been so processed, so
>
> that after burning that directory to DVD, you can repeat the process.
>
> As a bonus, add a utility & datafile to the top of that directory, so
>
> that the DVD can be self-checking.
>
>
>
> Then try something interesting:
>
>
>
> 1) find the nth prime, for example the 1000th prime
>
>
>
> 2) Find all perfect numbers under a trillion
>
>
>
> 3) solve the puzzles on http://projecteuler.net
>
>
>
> 4) Build a spell checker, using a combination of a standard
>
> dictionary-list and custom entries. Bonus question - Make it smart
>
> enough to only spell-check comments and literal strings, when applied to
>
> files with an extension of .py
>
>
>
>
>
> --
>
> DaveA

How hard would it be to change one file to another and would it be a small-medium sized program?

On 26 February 2013 22:47, eli m <> wrote:

> How hard would it be to change one file to another and would it be a
> small-medium sized program?
>

How do you want to change it? Like rename a file (os.rename)?

On Tuesday, February 26, 2013 4:22:10 PM UTC-8, Joshua Landau wrote:
> On 26 February 2013 22:47, eli m <techg...@gmail.com> wrote:
>
>
>
>
>
> How hard would it be to change one file to another and would it be a small-medium sized program?
>
>
> How do you want to change it? Like rename a file (os.rename)?

I want to change the file type.

On Tuesday, February 26, 2013 4:22:10 PM UTC-8, Joshua Landau wrote:
> On 26 February 2013 22:47, eli m <techg...@gmail.com> wrote:
>
>
>
>
>
> How hard would it be to change one file to another and would it be a small-medium sized program?
>
>
> How do you want to change it? Like rename a file (os.rename)?

I want to change the file type.

On 02/26/2013 05:47 PM, eli m wrote:
> On Monday, February 25, 2013 10:15:24 PM UTC-8, Dave Angel wrote:
>> On 02/25/2013 10:48 PM, eli m wrote:
>>
>>> On Friday, February 15, 2013 7:22:41 PM UTC-8, eli m wrote:
>>
>>>> Any small program ideas? I would prefer to stick to command line ones. Thanks.
>>
>>>
>>
>>> Thank you guys for the suggestions. Any more?
>>
>>>
>>
>>
>>
>> There are all kinds of things you could do. First, consider something
>>
>> that might be useful.
>>
>>
>>
>> 1) checksum all the files in a directory tree, using various checksum
>>
>> algorithms.
>>
>>
>>
>> 2) Convert one kind of file to another.
>>
>> <snip>
>>
>
> How hard would it be to change one file to another and would it be a small-medium sized program?
>

Depends on the kinds of the two files. To convert an Excel spreadsheet
file to a csv file might be a lot of work, thousands of lines, not to
mention having to dig up the docs. But to convert a DOS text file (with
lines ending cr/lf) into a Unix text file (with lines ending lf) would
be a dozen lines, shrinkable to 3 with lots of experience. (And I'd
probably prefer the dozen line version)

Other conversions might be somewhere in between. You could do data
compression, like bzip, using the modules in the standard library.

Note that utility commands may exist, but it can be instructive to do it
"by hand" anyway, to learn how.

Look at the following libraries, and see how you could write the glue to
make them into useful file conversion utilities. Then test them against
the standard equivalents, to make sure your code really work.
alib, gzip, bz2, zipfile, tarfile, csv, ConfigParser, robotparser, ...



--
DaveA

On Wed, Feb 27, 2013 at 2:27 PM, Dave Angel <> wrote:
> But to convert a DOS text file (with lines ending cr/lf) into a Unix text
> file (with lines ending lf) would be a dozen lines, shrinkable to 3 with
> lots of experience. (And I'd probably prefer the dozen line version)

Code golf!

open("outfile","wb").write(open("infile","rb").rea d().replace("\r",""))

No particular reason, and I'd probably prefer a 3-6 line version of
it, but it's fun to do it as one

ChrisA

Any other ideas?

On 18/03/2013 23:51, eli m wrote:
> Any other ideas?
>

How about coming up with a new message passing syntax for objects? I
understand from recent postings that this should be fairly easy

--
Cheers.

Mark Lawrence

Em sábado, 16 de fevereiro de 2013 03h22min41s UTC, eli m escreveu:
> Any small program ideas? I would prefer to stick to command line ones. Thanks.

What about this one?

Do you know how to do the elevator simulation?