🌐 Mailman 3 January 2014 - 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

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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

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Wave module
by Alex Krycek Feb. 12, 2015

Feb. 12, 2015

Hello, I'm trying to join two .wav files with the wave module. But when I try to use wave.open(filename, "rb") I receive the following error: Traceback (most recent call last): File "<stdin>", line 1, in <module> File "F:\PortablePython1.0\lib\wave.py", line 483, in open return Wave_read(f) File "F:\PortablePython1.0\lib\wave.py", line 162, in __init__ self.initfp(f) File "F:\PortablePython1.0\lib\wave.py", line 143, in initfp self._read_fmt_chunk(chunk) File "F:\PortablePython1.0\lib\wave.py", line 264, in _read_fmt_chunk raise Error, 'unknown format: %r' % (wFormatTag,) wave.Error: unknown format: 85 I read somewhere that there are various wave formats, only some supported by Python. Is this true? If so, is there any way I can convert my wave files into a supported kind? Thanks!

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is an alias a variable
by Ian D Feb. 17, 2014

Feb. 17, 2014

Hi is import longModuleName as lmn or lmn = longModuleName creating an alias or assigning to a variable..... or both? Thanks

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when is "pythondontwritebytecode" useful?
by Albert-Jan Roskam Feb. 17, 2014

Feb. 17, 2014

Hi, When is setting a PYTHONDONTWRITEBYTECODE environment variable useful? Or set sys.dont_write_bytecode to True? Or start Python with the -B option? I know what it does (http://docs.python.org/2/using/cmdline.html#envvar-PYTHONDONTWRITEBYTECODE), i.e. no pyc or pyo fiules are written, but WHY is that sometimes a good thing? The only useful scenario I can think of is when you don't have write rights to create pyc files but you want to use a package anyway. Perhaps related: it is possible to import zip files, but no pyc files will be created when you do this. However, I recently opened an EGG file with a zip utility (because I knew egg uses zipimport so it's a zip-like format) and I noticed that there were .pyc files. If the creator of the egg put them there, they'd only be useful if the user uses the exact same Python implementatiopn and version, right? So hoiw can the be there? Regards, Albert-Jan ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ All right, but apart from the sanitation, the medicine, education, wine, public order, irrigation, roads, a fresh water system, and public health, what have the Romans ever done for us? ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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Python as Teaching Language
by Keith Winston Feb. 10, 2014

Feb. 10, 2014

On Sun, Jan 19, 2014 at 11:55 AM, Alan Gauld <alan.gauld(a)btinternet.com> wrote: > It has reached the point that I'm back to looking for a new teaching > language. In Python 3 the decision has clearly been made to focus on > supporting Python's role as a professional software engineering language > at the expense of being a successor to ABC or for use in CP4E etc. > That's a fair enough decision but it does mean Python is no longer the > easiest option for non Comp Sci beginners. It's not worse than the others > but it's no longer clearly superior. (IMHO at least! ) > > But what else is there? that's the problem.... :-( Hi Alan, since this is off-topic from it's original thread, but I wanted to respond to it, I popped it into a new thread, I hope you don't mind (original was subject "iterators"). I can imagine what you mean about a teaching language, and while I don't 1) teach CS or 2) know Python like you do... AND I don't know the alternatives... it still feels like the cleanest, most user-friendly language I've ever worked with. Anyway, there's something to be said for letting novices play with real tools: instead of coming to the end of their one-semester computer class feeling like they just played with legos, they can feel like they got some (minor) feel for building a house. An interesting question is, what's the goal (for those students, probably the majority in a required comp sci course) who aren't going to do a lot of programming in the future ? I can think of a few: help people expand/develop/reflect on their ability to think in various ways; depressurize fear around programming/computers; give them a leg up in approaching the vast range of computer-supported tools in many fields... Anyway, I'm sorta loving this language, and it feels like a decent way "in" to all of those goals. There are two caveats: one is, without this tutor list (and to a lesser extent, perhaps because I've relied on this so much), other online resources (stack overflow, the Python IRC channels, etc), it would be much harder to make sense of. But those are there, and don't seem in immediate danger of disappearing. And the second... the documentation. I really want to love the documentation, but I can't. I can't maneuver through it hardly at all (if I'm trying to find something in the documentation, I almost always search it from Google), it often doesn't give any examples in the places I want them, and assumes an understanding I don't have at a given moment. I'm SO GRATEFUL to all the people who have contributed to the language, including the documentation, and don't imagine I could do better, I just notice that I haven't figured out how to make it work for me. Now, to a large degree this is not the documentations' fault: I forget things I just read 10s ago, and then I'll charge off to learn a topic far more advanced than I'm reasonably ready for. I have an iterative learning process which involves not understanding a disconcerting amount of what's in front of me. I don't actually think it's optimal, but I literally can't stand (what feels like) the slow, plodding forward approach that is the alternative generally offered. I think there is often a mismatch between teaching structures/approaches, and peoples (very personal, often ill-understood and ill-developed) learning styles. The other thing I wonder about is how to make the learning process more interactive/social: that is, so many of the questions that (even more novice than me) people bring here are things like error statement meanings, etc. In many cases IMO, the first 10 minutes of frustration around something like that can be enough to leave a lasting bad taste. I've gotten some very fast responses around here, and immediate ones on the IRC (which I've only used a little): I believe quick feedback to be crucial to the learning process, and yet we are often trained, in school and elsewhere, to smoulder in frustration around things we don't know yet, I believe (or to just give up and feel stupid)... I don't know whether social platforms will translate to a greater readiness to seek help in order to really learn, or just to learn to fill in the blanks faster/"cheat" better. Teaching is hard. And a last note on feedback: having the interpreter available is a definite plus for Python, though learning to disassemble one's confusion into little pieces that you can test methodically is hard. But another good skill... Sorry for the length. Keith

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Re: [Tutor] Code runs in interpreter but won't output to stdout
by bob gailer Feb. 1, 2014

Feb. 1, 2014

On 1/29/2014 8:59 PM, scurvy scott wrote: Please always reply to the tutor list so we can all play with your question. > > On 1/28/2014 9:12 PM, scurvy scott wrote: > > Hi guys, I'm trying to figure out why my code won't output to > terminal, but will run just fine in interpreter. > I'm using python 2.7.3 on Debian Linux/Crunchbang. > > Here is my code. > > import requests > from bs4 import BeautifulSoup as beautiful > import sys > > def dogeScrape(username, password): > payload = {'username': username, 'password': password} > r = requests.post("http://dogehouse.org/index.php?page=login", > data=payload) > soup = beautiful(r.text) > confirmed = str(soup.findAll('span',{'class':'confirmed'})) > print "Confirmed account balance: " + confirmed[86:98] > > dogeScrape("XXXX", "XXXX") > > It will output the "confirmed....." part, just not the confirmed > variable. It will output the entire thing in the interpreter. > I am stuck at "import requests". Where did you get that module? My guess is that you are getting a different response from the server. I suggest you write the entire response text to a file, then edit it looking for 'class="confirmed"'. I signed up at Dogehouse. What the heck is it? There is no explanation as to what it does or what I'd do with it!

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creating Turtle() object using 2 different ways
by Ian D Feb. 1, 2014

Feb. 1, 2014

Hi Another quickie. I can create turtle objects (if that's the correct terminology) using 2 different ways, both work. t1 = turtle.Turtle() or t2 = turtle But which is the best practice... and why? import turtle t1 = turtle.Turtle() t2 = turtle t1.fd(100) t2.goto(-100,100) t2.fd(100)

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auto completion before initially running program
by Ian D Jan. 31, 2014

Jan. 31, 2014

I notice that until a program has been run once, and I presume loaded its imports, I cannot use auto completion. I don't suppose there is a way to have it load modules in a way that would give me access to the module functions straight away other than running the program I presume there is no way around this.

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run a python script from access form
by Ahmed, Shakir Jan. 31, 2014

Jan. 31, 2014

Hi, I am trying to run a python script from Microsoft Access form. Your help is highly appreciated. Thanks S We value your opinion. Please take a few minutes to share your comments on the service you received from the District by clicking on this link<http://my.sfwmd.gov/portal/page/portal/pg_grp_surveysystem/survey%20ext?pid…>.

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