🌐 Mailman 3 May 2015 - Tutor - python.org

Scripting Calligra sheets with Python
by Jim Byrnes Jan. 31, 2022

Jan. 31, 2022

I am trying to script Calligra Sheets (formerly KSpread) with python. I have gotten some of the included example scripts to run so I know python scripting is running. I found the following snippet on their website: import KSpread sheet = KSpread.view().sheet() # swap text of B5 and C6 t1 = sheet.text("B5") t2 = sheet.text(6,3) sheet.setText("B5", t2) sheet.setText(6, 3, t1) # swap value of D7 and E8 v1 = sheet.value("D7") v2 = sheet.value(8,5) sheet.setValue("D7", v2) sheet.setValue(8, 5, v1) Error: 'str' object has no attribute 'text' File "file:///usr/share/kde4/apps/sheets/scripts/extensions/myswap.py", line 4, in <module> This error message appeared in a dialog box. I've taught myself some Python but I don't understand what is happening here. Shouldn't t1 be a sheet object? What would cause it to be a str instead? Thanks, Jim

5 8

Desktop Notifications on Linux
by Dharmit Shah June 29, 2017

June 29, 2017

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.

3 3

Option on How to create web Interface
by fabu desay March 9, 2016

March 9, 2016

If I got the problem correctly,you can equally create + open a file file = open(filename,+wr) The file should have the HTML extension You can now pace your web contents in the file.html you created that should work by trigering the python file you programed in and it inturn creates the website or pages of your choice an example like this could help webpage = open('index.html', 'w+') webpage.write("<html><head><title>My web page</title></head>"); webpage.write("<body>This the body</body></html>"); webpage.close()

7 8

HELP I need help with Python Setup or to reach Marilyn Davis
by carolynn fryer July 12, 2015

July 12, 2015

I am at the point where I am just spinning my wheels. I tried to get help with logging on but so far I am just getting frustrated. I have a problem that I brought up the first night in class but couldn't seem to get help then. Sorry if I am at the point where I am totally frustrated and I need HELP. PLEASE. I did not turn in homework because of the fact that I can not run anything without getting a syntax error. I tried setting up a path for python environment variables and a few other things but I am getting no where. Can you give me some suggestions why I can't run anything. I have windows 7 on my home computer, and windows 8 on my laptop and they are both doing the same thing. So it has to be something I am doing or not doing. I really do not like being behind/late in anything so that is making me even more frustrated. I suppose I am even more frustrated and afraid to ask because I kink of got a slap in the face last time I took a course here and the instructor would not help. But that was a way different situation, I simply could not understand his English and then he told me he did not have any patience. Excuse me but I just about died when he, an INSTRUCTOR told me that. I worked at Stanford for 25 years and to hear an instructor say those words was unthinkable. Anyway you can maybe understand my reluctance to ask for help but I need help. Any suggestions?? When I use one of the computers at school everything works just fine. Except I can not get my own computer to log on when I am there. So again that is why I said it is my system and something in my set up that I don't have. Sorry for the long note, I was just letting out a little frustration. LOL Thx for any suggestions, Carolynn Fryer ps: I know this is not the proper way to get ahold of you but I could not find nor have time to find any other way. The UCSC system is not very user friendly

8 7

Generate Prime Numbers
by Mirage Web Studio June 12, 2015

June 12, 2015

Hello, Below is a sample code i created. Can i better it any way? Thanks George ----------------------------------------------------------- import time start_time = time.time() def IsDivisibleBy3(number):#string variable v=0 for c in number: v=v+int(c) if v%3==0: return True else: return False def IsDivisibleBy7(number):#string variable last=int(number[-1])*2 length=len(number)-1 tnumber=number[0:length] tnumber=int(tnumber)-last if tnumber%7==0: return True else: return False def IsDivisibleBy9(number):#string variable v=0 for c in number: v=v+int(c) if v%9==0: return True else: return False def IsPrime(number): l=len(number) if number[l-1] in ['2','4','5','6','8','0']: #print("retuning base false") return False if IsDivisibleBy3(number): #print("retuning 3 check false") return False if IsDivisibleBy7(number): #print("retuning 7 check false") return False if IsDivisibleBy9(number): #print("retuning 9 check false") return False number=int(number) half=(number/2)+1 i=7 while half>=i: if number%i==0: return False i=i+1 return True primelist=[] for i in range (11,200000,2): number=str(i) print "checking ",i if IsPrime(number): primelist.append(number) print ("primes",len(primelist),primelist) print("--- %s seconds ---" % (time.time() - start_time)) --- This email has been checked for viruses by Avast antivirus software. http://www.avast.com

6 12

unittest with random population data
by Sydney Shall June 3, 2015

June 3, 2015

MAC OSX 10.10.3 Enthought Python 2.7 I am an almost beginner. Following advice from you generous people, I have chosen a project that interests me, to develop some knowledge of python. My projest is a simulation of a biological population. I have a base class and a simulation function, which uses instances of the class. This, after many months of work and lots of advice, now seems to work well. It generates sensible data and when I write a small test program it gives sensible output. Now I want to learn to use unittest. I have written a unittest class which works OK. But the problem I have is that because I use the random module to populate my initial arrays, my data is not strictly predictable even though I am using seed(0). So the tests return many *fails* because the numbers are not exactly correct, although they are all rather close, consistent with the sigma value I have chosen for the spread of my population. I do of course use *almostEqual* and not *Equal*. So, I would be very grateful for guidance. How does one proceed in this case? Should I simply create an arbitrary array or value to input into the function that I want to test? I would be grateful for any guidance. -- Sydney

5 6

Req Assistance with 1st Project.
by Nym City May 31, 2015

May 31, 2015

Hello all, I am working on my first Python project and I need some help. Here is what my project is about. I want to be able to read in from a text file that contains a list of IP addresses (maybe even hostnames) and write out each IP in the list in the following format: "172.0.0.1" OR "10.10.10.10" OR ...... After some online search, It seems like I would want to create a list (which I did) however, the challenge is that I can't figure out how to add the double quotes and OR after each entry in my list. Here is my current code (also attached): f = open("BadIPList", "r+") IOCs = [] for line in f: line = line.strip() IOCs.append(line) print(IOCs) f.close() Thank you in advance.

2 1

Re: [Tutor] League Secretary Application
by Laura Creighton May 30, 2015

May 30, 2015

In a message of Sat, 30 May 2015 13:32:09 +0100, Stephen Nelson-Smith writes: >Hello, > >I'm the league secretary for a table tennis league. I have to generate a >weekly results report, league table, and player averages, from results >cards which arrive by post or email. > >The data is of the form: > >Division: 1 >Week: 7 >Home: Some Team >Away: Different Team >Player A: Fred Bloggs >Player B: Nora Batty >Player X: Jim Smith >Player Y: Edna Jones >A vs X: 3-0 >B vs Y: 3-2 >A vs Y: 3-0 >B vs X: 3-2 >Doubles: 3-1 > >>From this I can calculate the points allocated to teams and produce a table. > >I've not done any real python for about 6 years, but figured it'd be fun to >design and write something that would take away the time and error issues >associated with generating this manually. Sure I could build a >spreadsheet, but this seems more fun. > >I'm currently thinking through possible approaches, from parsing results >written in, eg YAML, to a menu-driven system, to a web app. I'm generally >in favour of the simplest thing that could possibly work, but I am >conscious that there's a lot of room for data entry error and thus >validation, if I just parse a file, or make a CLI. OTOH I have never ever >written a web app, with forms etc. > >There's no time constraint here - this is merely for fun, and to make my >life easier. > >Any thoughts? > >S. 1. There is no better reason to do things. 2. How do you receive your data now? Do you want to change this, perhaps extend the capabilities -- i.e. let people send an sms with results to your cell phone? Or limit the capabilities ("Stop phoning me with this stuff! Use the webpage!) How you get your data is very relevant to the design. 3. After you have performed your calculation and made a table, what do you do with it? Email it to members? Publish it in a weekly dead-tree newspaper? Post it to a website? What you want to do with it once you have it is also very relevant to the design. Laura

4 3

League Secretary Application
by Stephen Nelson-Smith May 30, 2015

May 30, 2015

Hello, I'm the league secretary for a table tennis league. I have to generate a weekly results report, league table, and player averages, from results cards which arrive by post or email. The data is of the form: Division: 1 Week: 7 Home: Some Team Away: Different Team Player A: Fred Bloggs Player B: Nora Batty Player X: Jim Smith Player Y: Edna Jones A vs X: 3-0 B vs Y: 3-2 A vs Y: 3-0 B vs X: 3-2 Doubles: 3-1 >From this I can calculate the points allocated to teams and produce a table. I've not done any real python for about 6 years, but figured it'd be fun to design and write something that would take away the time and error issues associated with generating this manually. Sure I could build a spreadsheet, but this seems more fun. I'm currently thinking through possible approaches, from parsing results written in, eg YAML, to a menu-driven system, to a web app. I'm generally in favour of the simplest thing that could possibly work, but I am conscious that there's a lot of room for data entry error and thus validation, if I just parse a file, or make a CLI. OTOH I have never ever written a web app, with forms etc. There's no time constraint here - this is merely for fun, and to make my life easier. Any thoughts? S.

1 0

Re: [Tutor] unittest with random population data
by Laura Creighton May 30, 2015

May 30, 2015

In a message of Sat, 30 May 2015 12:16:01 +0100, Sydney Shall writes: >MAC OSX 10.10.3 >Enthought Python 2.7 > >I am an almost beginner. > >Following advice from you generous people, I have chosen a project that >interests me, to develop some knowledge of python. >My projest is a simulation of a biological population. >I have a base class and a simulation function, which uses instances of >the class. >This, after many months of work and lots of advice, now seems to work >well. It generates sensible data and when I write a small test program >it gives sensible output. >Now I want to learn to use unittest. >I have written a unittest class which works OK. >But the problem I have is that because I use the random module to >populate my initial arrays, my data is not strictly predictable even >though I am using seed(0). So the tests return many *fails* because the >numbers are not exactly correct, although they are all rather close, >consistent with the sigma value I have chosen for the spread of my >population. I do of course use *almostEqual* and not *Equal*. >So, I would be very grateful for guidance. How does one proceed in this >case? Should I simply create an arbitrary array or value to input into >the function that I want to test? >I would be grateful for any guidance. > >-- >Sydney You can mock your random number generator function to return something that isn't random for the purposes of testing. Mock is part of unittest for Python 3.3 or later, but since you are on 2.7 you will have to import mock as a separate library. This nice blog post http://fgimian.github.io/blog/2014/04/10/using-the-python-mock-library-to-f… gives a whole slew of examples for how to use mock to mock the random number generator function os.urandom . But you can use it to mock any function you like. If you have trouble getting it to work, come back with code. It is tricky the first time you mock anything, to make sure you put the mock in the correct place, but once you get the hang of this it is dirt simple. Happy hacking, Laura

1 0