[Tutor] Desktop Notifications on Linux
Hi all, I am trying to create a script that will go through the /var/log/secure file on a Linux system and provide desktop notifications for failed login attempts. Here is the code - http://pastebin.com/MXP8Yd91 And here's notification.py - http://pastebin.com/BhsSTP6H I am facing issue in the function new_attempts_from_last. I am not able to raise a desktop notification from this function. It always fails with this traceback - http://pastebin.com/cgHMScv3 I see this error only when I try to raise a notification from the aforementioned function. If I run test examples under /usr/share/doc/notify-python/examples, it works just fine. Also, if I try to raise a notification from under if __name__ == __main__:, it works without any issues. So I don't think there's any issue with OS's notification daemon. Running from python shell like below also works fine: In [1]: import notification In [2]: notification.notification(Hey) What am I missing or doing wrong here? If it matters, I am running Fedora 20, python 2.7 and Cinnamon desktop environment. For readability purposes, I have provided pastebin links. Let me know if this is not the correct way. Regards, Dharmit. ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: https://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Desktop Notifications on Linux
Hi Peter, On Thu, Apr 10, 2014 at 2:30 PM, Peter Otten __pete...@web.de wrote: Dharmit Shah wrote: I am trying to create a script that will go through the /var/log/secure file on a Linux system and provide desktop notifications for failed login attempts. Here is the code - http://pastebin.com/MXP8Yd91 And here's notification.py - http://pastebin.com/BhsSTP6H I am facing issue in the function new_attempts_from_last. I am not able to raise a desktop notification from this function. It always fails with this traceback - http://pastebin.com/cgHMScv3 I see this error only when I try to raise a notification from the aforementioned function. If I run test examples under /usr/share/doc/notify-python/examples, it works just fine. Also, if I try to raise a notification from under if __name__ == __main__:, it works without any issues. So I don't think there's any issue with OS's notification daemon. Running from python shell like below also works fine: In [1]: import notification In [2]: notification.notification(Hey) What am I missing or doing wrong here? If it matters, I am running Fedora 20, python 2.7 and Cinnamon desktop environment. For readability purposes, I have provided pastebin links. Let me know if this is not the correct way. Thanks for your prompt response. Maybe you are running the code as a user that has no desktop? Here's a strapped-down demo: $ cat notify_demo.py import pynotify import sys pynotify.init(Notification) n = pynotify.Notification(Notification, .join(sys.argv[1:])) n.show() $ python notify_demo.py hello world The notification appeared on my desktop. However, when trying again as root I got the error you are seeing: $ sudo su # python notify_demo.py hello again Traceback (most recent call last): File notify_demo.py, line 6, in module n.show() glib.GError: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name org.freedesktop.Notifications was not provided by any .service files That does ring some bells. I am logged into my F20 system as non-root user but since reading /var/log/secure file requires superuser privileges, I am running it as sudo: sudo python secure.py That probably explains the issue I am facing. I will add the user to the root group and see if it helps. Regards, Dharmit. ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: https://mail.python.org/mailman/listinfo/tutor ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: https://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] List Python Question..Please help
Also, comparison is case sensitive. Meaning, 'A' and 'a' are not the same. Hope that helps. :) On Fri, Sep 27, 2013 at 1:14 PM, Amit Saha amitsaha...@gmail.com wrote: On Fri, Sep 27, 2013 at 3:48 PM, Jacqueline Canales jackiexxd...@gmail.com wrote: So I have been trying to do this program using ifs and or loops. I am having a hard time solving this question, If you could please assist me in the right direction. Write a program that lists all the composers on the list ['Antheil', 'Saint-Saens', 'Beethoven', 'Easdale', 'Nielsen'] whose name starts and ends with the same letter (so Nielsen gets lsited, but Antheil doesn't). I know below it prints the entire list of composers but i dont know how to do the program above. I think I am thinking to much into but ive looked at all my notes and online resources and having a hard time coming up with anything. Please help! composers = ['Antheil', 'Saint-Saens', 'Beethoven', 'Easdale', 'Nielsen'] for person in composers: print(person) So, here you are printing every compose as you rightly state above. What you now need to do is: For each of the composers (`person'), you need to check if the first letter and the last letter are the same. Here;s a hint: s='abba' The first letter: s[0] 'a' The last letter: s[-1] 'a' If you now compare these, you will know if they are the same and hence you print him/her. Hope that helps. -Amit. -- http://echorand.me ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: https://mail.python.org/mailman/listinfo/tutor -- Dharmit Shah www.about.me/dharmit ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: https://mail.python.org/mailman/listinfo/tutor
[Tutor] Recursion always returns None
Hello, I am trying to do the following : 1) Ask user for the length of the word that he'd like to guess (for hangman game). 2) Pick a random word from /usr/share/dict/words (which I understand is not the best choice for hangman). 3) Call a function that would pick a random word to proceed further. Below is the code for the part I described above : [code] #!/bin/env python import random def pick_random(l, ln): # picks a random word from the list l of length ln global mystery word = random.choice(l) if word.__len__() != ln: pick_random(l, ln)# recursion else: print Should return %s % word # prints the chosen random word correctly return word # always return None, why? :( if __name__ == __main__: ln = raw_input(How long word can you guess (number of alphabets) : ) ln = int(ln) l = [] with open(/usr/share/dict/words, r) as f: for i in f.readlines(): i = i.split(\n)[0] if i.isalpha(): l.append(i) word = pick_random(l, ln) print word [/code] Sample output : $ python hangman.py How long word can you guess (number of alphabets) : 6 Should return inarch None $ The problem is that the last line print word always prints None. I know I am doing something wrong in the recursion part of the function pick_random. Can someone please point what I am missing. Thank you! Cheers, Dharmit -- Dharmit Shah www.about.me/dharmit ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Recursion always returns None
Hello, @Hugo Arts : Thank you! That was awesome to read. Thanks for the len() suggestion. @ Steve : Thank you. As suggested by Dave Angel, I am going to try the loop. And even before implementing it, I can feel that it's going to be more efficient than recursion. @Dave Angel : Thank you for the loop idea. It didn't strike me at all. @All : Thanks a bunch for helping me out. :) Cheers, Dharmit On Tue, Aug 28, 2012 at 7:18 PM, Dave Angel d...@davea.name wrote: On 08/28/2012 07:23 AM, Dharmit Shah wrote: Hello, I am trying to do the following : 1) Ask user for the length of the word that he'd like to guess (for hangman game). 2) Pick a random word from /usr/share/dict/words (which I understand is not the best choice for hangman). 3) Call a function that would pick a random word to proceed further. Below is the code for the part I described above : [code] #!/bin/env python import random def pick_random(l, ln): # picks a random word from the list l of length ln global mystery word = random.choice(l) if word.__len__() != ln: pick_random(l, ln)# recursion else: print Should return %s % word # prints the chosen random word correctly return word # always return None, why? :( There's no return statement here, to cover the case where the if-clause succeeded. if __name__ == __main__: ln = raw_input(How long word can you guess (number of alphabets) : ) ln = int(ln) l = [] with open(/usr/share/dict/words, r) as f: for i in f.readlines(): i = i.split(\n)[0] if i.isalpha(): l.append(i) word = pick_random(l, ln) print word [/code] Sample output : $ python hangman.py How long word can you guess (number of alphabets) : 6 Should return inarch None $ The problem is that the last line print word always prints None. I know I am doing something wrong in the recursion part of the function pick_random. Can someone please point what I am missing. Thank you! Cheers, Dharmit There are two things wrong, one of which has already been pointed out. But the most fundamental thing that's wrong is that once you have called the recursion, you don't return a value at all, simply falling off the end of the function. Python returns a value of None when you omit the return statement. So you should add a statement 'return word', which will eliminate the None. But of course it'll be the wrong word. To fix that, you need to assign the results of the call to pick_random() to the same local variable, word. As others have pointed out, this is a poor choice for recursion. Recursion can be more readable for some problems, when the problem statement is naturally recursive. But even then, it can frequently lead to stack overruns, and performance problems. But in this case a simple loop would make much more sense. So unless the instructor is requiring you to use recursion, please redo it as a loop. While we're at it, please use the len() function, rather than __len__() method. And instead doing a split() method for eliminating the linefeeds, what you really want to do is rstrip(). -- DaveA -- Dharmit Shah www.about.me/dharmit ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] How to replace the '\'s in a path with '/'s?
Ruchard,
Try return path.replace('\\', '/'). That gave me the output desired by you.
I don't know the reason. But I guess it's because \ is used as escape
character. I am sure someone in the list will point out the accurate reason.
On Sun, Jul 31, 2011 at 10:58 AM, Richard D. Moores rdmoo...@gmail.comwrote:
64-bit Vista
Python 3.2.1
I would like to write a function that would take a path such as
'C:\Users\Dick\Desktop\Documents\Notes\College Notes.rtf'
and return 'C:/Users/Dick/Desktop/Documents/Notes/College Notes.rtf' . I've
tried this:
def test(path):
return path.replace('\', '/')
print(test('C:\Users\Dick\Desktop\Documents\Notes\College Notes.rtf'))
gets me
File c:\P32Working\untitled-5.py, line 2
return path.replace('\', '/')
^
SyntaxError: EOL while scanning string literal
Process terminated with an exit code of 1
Thanks,
Dick
___
Tutor maillist - Tutor@python.org
To unsubscribe or change subscription options:
http://mail.python.org/mailman/listinfo/tutor
--
Regards
Dharmit Shah http://about.me/dharmit
___
Tutor maillist - Tutor@python.org
To unsubscribe or change subscription options:
http://mail.python.org/mailman/listinfo/tutor
[Tutor] Web Programming
Hi all, I have been reading Head First Pythonhttp://www.headfirstlabs.com/books/hfpython/ since some time now. I am stuck in a chapter on Web Development. Web Development has never been an area of my interest and hence I feel stuck in there. If anyone here has read the book, I wish to know if it's okay to skip that chapter and read further? -- Regards Dharmit Shah http://about.me/dharmit ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
[Tutor] Recursively flatten the list
Hello, I am learning Python and yesterday I cam across a definition wherein I was supposed to flatten a list recursively. I am getting the solution properly but wanted to know if I can optimize the code further. #!/usr/bin/env python new_list=[] def flatten(num_list): flatten([2, 9, [2, 1, 13, 2], 8, [2, 6]]) [2, 9, 2, 1, 13, 2, 8, 2, 6] flatten([[9, [7, 1, 13, 2], 8], [7, 6]]) [9, 7, 1, 13, 2, 8, 7, 6] flatten([[9, [7, 1, 13, 2], 8], [2, 6]]) [9, 7, 1, 13, 2, 8, 2, 6] flatten([[5, [5, [1, 5], 5], 5], [5, 6]]) [5, 5, 1, 5, 5, 5, 5, 6] global new_list for i in num_list: if type(i) == type([]): new_list = flatten(i) else: new_list.append(i) tmp = new_list new_list=[] return tmp if __name__==__main__: import doctest doctest.testmod() PS - My knowledge of Python is still very basic and I am trying to dive into it as deeper as I can. Solutions on Stackoverflow.com were beyond my understandability. -- Regards Dharmit Shah ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] print Hello, World!
I'd also recommend using http://www.openbookproject.net/thinkcs/python/english2e/ . Currently I am learning from it. Once u are through with it u can read the book called Dive into Python. it's for experienced users. Google it. Hope that helps. On Thu, Feb 3, 2011 at 1:20 PM, davidheise...@gmail.com wrote: Seven years ago, my story was similar. I started off with The Python Quick Book (Manning) and Python - Visual Quickstart Guide (Peachpit Press). Both are very easy to follow. I still pick up the Quick book once in a while for reference. This Tutor list helped a lot. I learned by trying out the things people offered as solutions to problems from people like you and me. Asking questions here is a way to help a lot of new Python programmers, and a few older ones, too. There are a lot more resources these days, too. Search on Python in YouTube. There are a lot of on-line tutorials, too. - Original Message - From: Doug Marvel smokeinourlig...@gmail.com To: tutor@python.org Sent: Wednesday, February 02, 2011 6:00 PM Subject: [Tutor] print Hello, World! Hey folks, I'm Doug. I've been using computers since second grade, and I know a little about them. I am, however, completely new to programming. I don't even know what I know about it. I'd like some social interaction with this, but I can't go back to school until summer or fall of this year. I don't want to wait to start learning this as I feel like I'm already about a million years behind. I asked the Oracle (www.google.com) and after messing around with the Python Shell and getting a lot of error messages, I decided I need some remote help. Here's where I'm at: - I have downloaded and installed Python 2.6.4. Successfully, I think. - I am running Windows XP SP3 (though I'm going to see if I can do this on my laptop, which has Windows 7) - I have toyed around with some tutorials, but all they really taught me is that I need a teacher. I'm sure you guys are busy, but I read that the most basic questions are okay. As I'm sure there is at least one good resource on the net for people in my position, I'd like some suggestions on where to start. I plan on bothering you all as little as possible, but I am seriously hoping to make real progress between now and my first class. I have a feeling once I get a basic understanding, I'll run away with it. It's just very... big right now. So this list seems like a good thing, but tell me if I'm in the wrong place. I am hoping for a link to a somewhat comprehensive online resource that explains from the beginning in English, plain English, as this is the only language I speak. Something to get my foot in the door would be awesome. Cheers, Doug Marvel ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor -- Regards Dharmit Shah ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
