[Tutor] When to use a class
I am still trying to understand when to use a class and when not to. All of the coding that I have done in the past (Python, Perl) has been procedural / functional. I would really like to do more OOP but I am not really sure when I need it. I have the following code. Is there any way that it would benefit from using a class? #!/usr/bin/env python import string import _winreg import sys compName = sys.argv[1] x = _winreg.ConnectRegistry(compName,_winreg.HKEY_LOCAL_MACHINE) y = _winreg.OpenKey(x, r"SOFTWARE\Intel\LANDesk\VirusProtect6\CurrentVersion") avParent = _winreg.QueryValueEx(y,"Parent")[0] _winreg.CloseKey(y) print "Computer: %s \tAV Parent: %s" % (compName,avParent) -- Thanks Eric Lake signature.asc Description: Digital signature ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Finding all the letters in a string?
On Mon, Sep 17, 2007 at 07:21:09PM -0400, Andrew Nelsen wrote:
>
>I was wondering, recently, the most expedient way to take a string
>with [EMAIL PROTECTED]&*] and alpha-numeric characters [ie.
>"[EMAIL PROTECTED]@*$g@)$&^@&^$F"] and place all of the letters in a
> string or
>list. I thought there could be obvious ways:
>A) Find all the letters, put them in a list, one by one. Something
>like (I'm not sure yet how I'd do it...):
>import string
>list = {}
>string = "@*&^$&[EMAIL PROTECTED](&@$*(&[EMAIL PROTECTED](*&*(&c^&%&^%"
>for x in string:
>if x
>list = list + [x]
>B) Delete all the characters in the string that don't match
>string.letters:
>No idea...strip()?
>Thanks,
>Drew
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This is what I came up with for the first part of the question.
#!/usr/bin/env python
# -*- coding: iso-8859-15 -*-
import string
lst = []
chars = '@*&^$&[EMAIL PROTECTED](&@$*(&[EMAIL PROTECTED](*&*(&c^&%&^%'
for x in chars:
if x in string.ascii_letters:
lst.append(x)
for n in lst:
print n,
I am sure that there is probably a better way though.
--
Thanks
Eric Lake
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Re: [Tutor] Finding all the letters in a string?
On Mon, Sep 17, 2007 at 07:48:56PM -0400, Michael Langford wrote:
>
>Not my night...the second sentence "To get the set of letters, use"
>should read "To get the filtered string".time for more Coke Zero.
> --Michael
>On 9/17/07, Andrew Nelsen <[6] [EMAIL PROTECTED]> wrote:
>
>I was wondering, recently, the most expedient way to take a string
>with [EMAIL PROTECTED]&*] and alpha-numeric characters [ie.
>"[EMAIL PROTECTED]@*$g@)$&^@&^$F"] and place all of the letters in a
> string or
>list. I thought there could be obvious ways:
>A) Find all the letters, put them in a list, one by one. Something
>like (I'm not sure yet how I'd do it...):
>import string
>list = {}
>string = "@*&^$&[EMAIL PROTECTED](&@$*(&[EMAIL PROTECTED](*&*(&c^&%&^%"
>for x in string:
>if x
>list = list + [x]
>B) Delete all the characters in the string that don't match
>string.letters:
>No idea...strip()?
>Thanks,
>Drew
>
> ___
I missed a part too. The original question specified alpha-numeric
characters. sting.ascii.letters will only get a - z and A - Z. Would a
regular expression work here with \w?
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Eric Lake
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Re: [Tutor] Finding all the letters in a string?
This seems to work to get out the alpha-numeric characters.
#!/usr/bin/env python
# -*- coding: iso-8859-15 -*-
import re
pat = re.compile('\w')
lst = []
chars = '@*1&^$&[EMAIL PROTECTED](&@2$*(&[EMAIL PROTECTED](*&3*(&c^&%4&^%'
lst = pat.findall(chars)
for x in lst:
print x,
--
Thanks
Eric Lake
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[Tutor] Finding a project
What is a good way to find a project to work on? I really want to work on something but I can not think of anything useful to write. I am interested in sysadmin stuff (backups, monitoring, etc). That being said I don't really have experience writing apps like that. But I really want to learn. -- Thanks Eric Lake signature.asc Description: Digital signature ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] New Introductory Book
For that price the book better write my code for me. Alex Ezell wrote: > On 11/6/07, Chris Calloway <[EMAIL PROTECTED]> wrote: >> Michael H. Goldwasser wrote: >>>We are pleased to announce the release of a new Python book. >> Why is this book $102? > > Supply and demand aside, I suspect the market for this, based on both > the publisher and the author's employment, is mostly > educational/collegiate. Therefore, this book is likely to be assigned > as a textbook and can command a premium price from buyers who have > little to no choice but to buy it. Additionally, it may not be > marketed on the wider bookstore shelves, so must make the most of the > market which it does reach. > > That's all conjecture. What I do know is fact is that I can't afford it. > > /alex > ___ > Tutor maillist - Tutor@python.org > http://mail.python.org/mailman/listinfo/tutor signature.asc Description: OpenPGP digital signature ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
