Re: [Tutor] Design question: Web-based vs. desktop-based vs. desktop-based with data backed up to web server with a tablet thrown in for all cases?
On 19/07/15 07:27, Steven D'Aprano wrote: If you use SQLite for the data storage, it should have a simple dump function that would let you export the database to a standard SQL dump format, and reconstruct the database from said dump if needed. Otherwise you would have to write your own export/import routines. SQLite is a single file database so you shouldn't need to dump/load it. Just save the file. That's why I suggested Dropbox or similar since you get the benefit of a local copy with automated backup to the cloud. SQLIte provides no login/user access control but the Cloud will provide visibility control so only approved users can access the file. (Of course they can copy it anywhere they want so its not as good as full server based access but for a few users/devices it should be sufficient) -- Alan G Author of the Learn to Program web site http://www.alan-g.me.uk/ http://www.amazon.com/author/alan_gauld Follow my photo-blog on Flickr at: http://www.flickr.com/photos/alangauldphotos ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: https://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Design question: Web-based vs. desktop-based vs. desktop-based with data backed up to web server with a tablet thrown in for all cases?
In a message of Sun, 19 Jul 2015 16:27:13 +1000, Steven D'Aprano writes: I'm not sure if it runs on Macs, but it should work on Android, Windows, and Linux, and of course it is entire Python-based. Python 2.7 only on for MacOSX. Python 3 is coming very soon. Laura ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: https://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Design question: Web-based vs. desktop-based vs. desktop-based with data backed up to web server with a tablet thrown in for all cases?
On Sun, Jul 19, 2015 at 12:49:50AM -0500, boB Stepp wrote: In this thread, I kept it very general on purpose. I was probing this community for their thoughts on two things: 1) Should I make the software web-based or desktop-based? 2) What would be the best way of handling the data involved, particularly the data that impinges on student privacy concerns. Not to be a wet blanket, but this is way off-topic for this mailing list. However, you're a regular in good standing, and we don't have a strict rule about staying on-topic (such rules are tiresome and annoying if they allow for no exceptions), so let's go with it. I would start with the simplest thing that can work. With an initial user-base of one person, especially one who is quite computer literate, you don't have to worry about backwards compatibility and can feel free to experiment and expand the software as needed. So I would start with something that just runs on the local machine. Since your missus intends to use a tablet, you may want to investigate Kivy for your GUI needs. http://kivy.org/ I'm not sure if it runs on Macs, but it should work on Android, Windows, and Linux, and of course it is entire Python-based. Once you have a proof-of-concept working for your one user, then you can consider how to expand on it by moving the data to a server and possibly giving access to others. In the meantime, keep everything on the local machine. Take backups of the data by exporting to some sort of regular file which can be zipped up and copied onto a USB stick and locked in a safe. You might consider an encrypted file system if the data is particularly sensitive. But that's a separate issue from the application itself. If you use SQLite for the data storage, it should have a simple dump function that would let you export the database to a standard SQL dump format, and reconstruct the database from said dump if needed. Otherwise you would have to write your own export/import routines. If you make the decision to provide multi-user access, then you have a large number of problems to deal with: - security of the database server; - access to the database itself; - what to do if the link between the app and the database goes down? - user authentication and permissions (you don't want little Freddy changing his grades, or accessing other people's records); etc. Why deal with those things from Day One if you only have one user? You don't even know if this application is going to be useful. Start with a proof of concept to prove that it is worth the extra effort. Perhaps your wife will decide that the application isn't useful at all, or that it is useful, but it can remain a single person app and no shared database is needed. But you won't know until you have something to actually experiment with. -- Steve ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: https://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Design question: Web-based vs. desktop-based vs. desktop-based with data backed up to web server with a tablet thrown in for all cases?
On Sun, Jul 19, 2015 at 5:28 PM, Laura Creighton l...@openend.se wrote: In a message of Sun, 19 Jul 2015 18:11:36 -0400, Dave P writes: On Jul 19, 2015 5:43 AM, Laura Creighton l...@openend.se wrote: In a message of Sun, 19 Jul 2015 16:27:13 +1000, Steven D'Aprano writes: I'm not sure if it runs on Macs, but it should work on Android, Windows, and Linux, and of course it is entire Python-based. Python 2.7 only on for MacOSX. Python 3 is coming very soon. Laura Hi all, I can't help thinking we're trying to reinvent the wheel here. I would be quite surprised if Trello couldn't help in this situation. (I do not work for Trello.com) Long story short, it's kanban in the cloud and can be adapted for just about anything. It's free, too! My son's multi-age, non-traditional school -kids, teachers, and parents alike- use it to track student projects goals, plan school events, fundraising, wish lists, supplies lists, and more. It's easy to use, share, and collaborate. It works in the browser or you can use their mobile apps. You can set up checklists, attach images and files, work with due dates, comment and activity streams, etc. Plus, using their RESTful API, you could whip up some slick automation and reporting (using Python, of course!) I'll be glad to help you and your wife off-list if you'd like some pointers. Good luck! Dave boB: this was precisely the sort of solution 'already existing in the cloud' I was hoping you could find. I just didn't know about this one. Very cool. Thank you Dave. I will forward this to Vonda and see what she thinks. But from what she has described thus far, I don't think it will give her the type of interface she is hoping to get, or make it easy to organize her information in the way she seems to want. However, it looks like it might do some stuff that I have wanted done on my phone that I used to do on a Palm once upon a time. I will have to glance at the API docs and see what else we might do with it. Thanks! -- boB ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: https://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Socket Module
Thank you for your response. I gave it another try:
As suggested, first I ran the concept just in the terminal, and it worked fine:
names =['173.252.120.6', '98.139.183.24']
import socket
for name in names:
socket.gethostbyaddr(name)
print(name)
output:
('edge-star-shv-12-frc3.facebook.com', [], ['173.252.120.6'])
('ir2.fp.vip.bf1.yahoo.com', [], ['98.139.183.24'])
However, when I run it in a program, from a CSV file, it just outputs the
content of the CSV file without running it thought socket.gethostbyaddr():
import csv
import socket
domains = []
with open('top500ips.csv', 'r') as f:
for line in f:
line = line.strip()
domains.append(line)
for name in domains:
socket.gethostbyaddr(name)
print(name)
output:
173.252.120.6
98.139.183.24
What am I missing? Thank in advance.
Thank you.
On Saturday, July 18, 2015 7:09 PM, Danny Yoo danny@gmail.com wrote:
On Jul 18, 2015 3:50 PM, Nym City via Tutor tutor@python.org wrote:
Thank you all for your responses. I have a follow up question:
So if gethostbyname_ex() takes only a single hostname string, how can I use
it to go through a list of hostnames and get their IP resolution as an output?
Look into loops. If you have a function that works on a single thing, you can
use a loop to apply that function for each element in a list. Any good
tutorial should show how to do this.Let us know if you run into difficulties.
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Re: [Tutor] Design question: Web-based vs. desktop-based vs. desktop-based with data backed up to web server with a tablet thrown in for all cases?
On Jul 19, 2015 5:43 AM, Laura Creighton l...@openend.se wrote: In a message of Sun, 19 Jul 2015 16:27:13 +1000, Steven D'Aprano writes: I'm not sure if it runs on Macs, but it should work on Android, Windows, and Linux, and of course it is entire Python-based. Python 2.7 only on for MacOSX. Python 3 is coming very soon. Laura Hi all, I can't help thinking we're trying to reinvent the wheel here. I would be quite surprised if Trello couldn't help in this situation. (I do not work for Trello.com) Long story short, it's kanban in the cloud and can be adapted for just about anything. It's free, too! My son's multi-age, non-traditional school -kids, teachers, and parents alike- use it to track student projects goals, plan school events, fundraising, wish lists, supplies lists, and more. It's easy to use, share, and collaborate. It works in the browser or you can use their mobile apps. You can set up checklists, attach images and files, work with due dates, comment and activity streams, etc. Plus, using their RESTful API, you could whip up some slick automation and reporting (using Python, of course!) I'll be glad to help you and your wife off-list if you'd like some pointers. Good luck! Dave ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: https://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Design question: Web-based vs. desktop-based vs. desktop-based with data backed up to web server with a tablet thrown in for all cases?
In a message of Sun, 19 Jul 2015 18:11:36 -0400, Dave P writes: On Jul 19, 2015 5:43 AM, Laura Creighton l...@openend.se wrote: In a message of Sun, 19 Jul 2015 16:27:13 +1000, Steven D'Aprano writes: I'm not sure if it runs on Macs, but it should work on Android, Windows, and Linux, and of course it is entire Python-based. Python 2.7 only on for MacOSX. Python 3 is coming very soon. Laura Hi all, I can't help thinking we're trying to reinvent the wheel here. I would be quite surprised if Trello couldn't help in this situation. (I do not work for Trello.com) Long story short, it's kanban in the cloud and can be adapted for just about anything. It's free, too! My son's multi-age, non-traditional school -kids, teachers, and parents alike- use it to track student projects goals, plan school events, fundraising, wish lists, supplies lists, and more. It's easy to use, share, and collaborate. It works in the browser or you can use their mobile apps. You can set up checklists, attach images and files, work with due dates, comment and activity streams, etc. Plus, using their RESTful API, you could whip up some slick automation and reporting (using Python, of course!) I'll be glad to help you and your wife off-list if you'd like some pointers. Good luck! Dave boB: this was precisely the sort of solution 'already existing in the cloud' I was hoping you could find. I just didn't know about this one. Very cool. Thank you Dave. Laura ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: https://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Socket Module
for name in domains: socket.gethostbyaddr(name) print(name) output: 173.252.120.6 98.139.183.24 What am I missing? Thank in advance. You have confused yourself a little because the variable names you've chosen are slightly misleading. Specifically, name is really an IP address. Hence, your loop here really should be: for addr in domains: ... I would also strongly suggest renaming domains to something like domainAddresses, for similar reasons. Still, you do want a name at some point, since that's what you care about. Can you say in human language what the following will return? socket.gethostbyaddr(addr) Can you give it a good name? ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: https://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Design question: Web-based vs. desktop-based vs. desktop-based with data backed up to web server with a tablet thrown in for all cases?
On Sun, Jul 19, 2015 at 1:27 AM, Steven D'Aprano st...@pearwood.info wrote: On Sun, Jul 19, 2015 at 12:49:50AM -0500, boB Stepp wrote: In this thread, I kept it very general on purpose. I was probing this community for their thoughts on two things: 1) Should I make the software web-based or desktop-based? 2) What would be the best way of handling the data involved, particularly the data that impinges on student privacy concerns. Not to be a wet blanket, but this is way off-topic for this mailing list. However, you're a regular in good standing, and we don't have a strict rule about staying on-topic (such rules are tiresome and annoying if they allow for no exceptions), so let's go with it. Thanks for the pass! But I actually thought this was on-topic. I am preparing to write a Python application. I have some questions about how to design it. Why would this be off-topic? I get it that program design applies to all programming languages, but since this list is targeted to people learning programming, I would think we would all need help in these areas, too. Otherwise our Python programs would not be very well written, however correct the Python syntax might be. For the rest of your answer, I think that this is exactly how I should approach this first program. And after having a discussion with Vonda today, it is actually her intent--play with this project until it is in a form that works in her workflow, and then expand upon it. Laura suggested kivy, too, and I think it will best do what is needed for the Slate tablet. Alan's and your suggestion to use SQLite seems a good one as well for the prototype. Thanks to everyone who responded to this thread. It has really clarified my thinking on the best way to get productive as quickly as possible. Now to find the energy after my regular work and the time at home which is always being taken up by my two kids and Vonda! Would it be off-putting later to ask specific questions about implementing features of kivy on this list? I imagine that they would tend to be basic questions that would probably apply to any GUI development. But I'm sure there is a kivy list somewhere once I look for it if I need to go there. I took Laura's suggestion and asked my original questions that started this thread on the tkinter list she suggested, but I have yet to receive an response. One thing I cherish about this list is it is both active and enthusiastic in providing help and direction, even if that help is to suggest other avenues for help. Much better than silence! Thanks! boB ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: https://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Design question: Web-based vs. desktop-based vs. desktop-based with data backed up to web server with a tablet thrown in for all cases?
On Sun, Jul 19, 2015 at 8:23 PM, boB Stepp robertvst...@gmail.com wrote: Would it be off-putting later to ask specific questions about implementing features of kivy on this list? I imagine that they would tend to be basic questions that would probably apply to any GUI development. But I'm sure there is a kivy list somewhere once I look for it if I need to go there. I guess I will answer this question myself: I have just been skimming through the kivy docs tonight and they look to be quite good. Also, I found their Google group and it looks to be quite active. So unless I have a GUI question that seems to fit better here, I will direct my kivy inquiries to their Google group. -- boB ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: https://mail.python.org/mailman/listinfo/tutor
