🌐 Mailman 3 May 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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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.

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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()

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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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cgi.FieldStorage() causing thread.error: can't allocate lock
by SABARWAL, SHAL June 1, 2014

June 1, 2014

Wondering if anyone came across this error in using form = cgi.FieldStorage() import tempfile File /tempfile.py", line 83, in <module> _once_lock = _allocate_lock() thread.error: can't allocate lock puthon version 2.7, on HP-UX 11.11

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Re: [Tutor] self keyword in recursive function
by Ritwik Raghav June 1, 2014

June 1, 2014

Peter Otten wrote: >Ritwik Raghav wrote: > >> I joined the topcoder community tomorrow and tried solving the >> PersistentNumber problem: >> "Given a number x, we can define p(x) as the product of the digits of x. >> We can then form a sequence x, p(x), p(p(x))... The persistence of x is >> then defined as the index (0-based) of the first single digit number in >> the sequence. For example, using 99, we get the sequence 99, 9*9 = 81, 8*1 >> = 8. Thus, the persistence of 99 is 2. You will be given n, and you must >> return its persistence." >> >> It asks to define a function def getPersistence(self, n). I solved the >> problem in IDLE. My code is: >> >> def getPersistence(n,count = 0): >> product = 1 >> if len(str(n)) == 1: >> return count >> else: >> a = str(n) >> for i in range(len(a)): >> product *= int(a[i]) >> count += 1 >> return getPersistence(product,count) >> >> Now plz help me to convert the above code in specified format. Or help me >> understand how to recreate the function as specified. > >The "topcoder" site is probably infested with the world view of Java where >every function is a method inside a class. You may have to wrap your code >into something like > >class PersistentNumber: > def getPersistence(self, n, count=0): > ... # your code with a minor change (*) > > >(*) Inside the method the recursive call becomes > > self.getPersistence(product, count) > >instead of just > > getPersistence(product, count) It has again given some error I do not understand. This time my code is: count = 0 def getPersistence(self,n): product = 1 if len(str(n)) == 1: return self.count else: a = str(n) for i in a: product *= int(i) self.count += 1 return self.getPersistence(product) and the error is: Correct Return Value: No Answer check result: Result must be not null. Execution Time: 0.017s Peak memory used: 24.551MB abnormal termination (exit 1) Standard Output: Standard Error: Traceback (most recent call last): File "Wrapper.py", line 182, in <module> AttributeError: 'module' object has no attribute 'PersistentNumber' I do not understand what it is trying to tell me? I tried to test it for 99. -- Ritwik Raghav

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Break outside the loop error (line 23)
by Sasi - May 31, 2014

May 31, 2014

Hi, i tried to make a code to execute the functions that i described below. However i got a break outside the loop error and i have tried to tab and all that but i still get the same error for line 23. I'm using python 2.7 Please help me. I'm completely new to coding (just started last week)Thank you for your time, i have pasted the code below. ## open both filesfile1 = open('human_brain_proteins.csv')file2 = open('human_plasma_proteins.csv')#file1 = open('log1')#file2 = open('log2') ## createdd a counter to count linescount1 = 0count2 = 0 ## define 3 lists to be filled in latercommon = list()brain = list()plasma = list() ## Created the lists for brain and plasma before searching for common bioseq.while True: count1 += 1 s1=file1.readline().partition(',')[0]if s1 and count1 > 1: brain.append(s1) if not s1: breakwhile True: count2 += 1 s2=file2.readline().partition(',')[0]if s2 and count2 > 1: plasma.append(s2) if not s2: break ## Compared the lists to find out common bioseq., add the common bioseq. into the common list,## then remove the common bioseq. from both listsfor item1 in brain: for item2 in plasma: if item1 == item2: common.append(item1) brain.remove(item1) plasma.remove(item2) ## closed both filesfile1.close()file2.close() ## print out the listsprint "Common biosequence:"print common,"\n"print "Brain specific biosequence:"print brain,"\n"print "Plasma specific biosequence:"print plasma,"\n"

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Re: [Tutor] Question about scraping
by ALAN GAULD May 31, 2014

May 31, 2014

On Fri, May 30, 2014 at 7:20 PM, Alan Gauld <alan.gauld(a)btinternet.com> wrote: > > >> If a site offers an API that returns the data you need then use it, >> If not you have few alternatives to scraping (although scraping >> may be 'illegal' anyway due to the impact on other users). But scraping, >> whether a web page or a GUI or an old mainframe terminal >> is always a fragile and unsatisfactory solution. > >Okay I think learning how to scrap (library or framework) is not worth >the trouble. Especially if some people consider it illegal. Thanks for >the input. > > >As I say, sometimes you have no choice but to scrape. Its only 'illegal' if the site owner says so, in other words if their terms of use prohibit web scraping. If they have gone to the effort (and cost) of providing an API then it probably means scraping is prohibited. But many (most!) sites don't offer APIs and most smaller sites don't prohibit scraping, so it is still a valid technique. But before you try its always worth checking whether an API exists and whether scraping is permitted. And by 'illegal' I mean you are unlikely to be prosecuted in a court but you are likely to find your IP address and/or account closed. The systems generally monitor activity and if an account is navigating through pages too quickly to be a human they often close the account down. Alan g.

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Library for .ppt to .txt conversion
by Aaron Misquith May 31, 2014

May 31, 2014

Like pypdf is used to convert pdf to text; is there any library that is used in converting .ppt files to .txt? Even some sample programs will be helpful.

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