🌐 Mailman 3 July 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

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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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Re: [Tutor] String Attribute
by ltc.hotspot＠gmail.com Aug. 2, 2015

Aug. 2, 2015

Hi Alan, Here is the revised code below: fname = raw_input("Enter file name: ") if len(fname) < 1 : fname = "mbox-short.txt" fh = open(fname) count = 0 for line in fh: if not line.startswith('From'): continue line2 = line.strip() line3 = line2.split() line4 = line3[1] addresses = set() addresses.add(line4) count = count + 1 print addresses print "There were", count, "lines in the file with From as the first word" The code produces the following out put: In [15]: %run _8_5_v_13.py Enter file name: mbox-short.txt set(['stephen.marquard(a)uct.ac.za']) set(['stephen.marquard(a)uct.ac.za']) set(['louis(a)media.berkeley.edu']) set(['louis(a)media.berkeley.edu']) set(['zqian(a)umich.edu']) set(['zqian(a)umich.edu']) set(['rjlowe(a)iupui.edu']) set(['rjlowe(a)iupui.edu']) set(['zqian(a)umich.edu']) set(['zqian(a)umich.edu']) set(['rjlowe(a)iupui.edu']) set(['rjlowe(a)iupui.edu']) set(['cwen(a)iupui.edu']) set(['cwen(a)iupui.edu']) set(['cwen(a)iupui.edu']) set(['cwen(a)iupui.edu']) set(['gsilver(a)umich.edu']) set(['gsilver(a)umich.edu']) set(['gsilver(a)umich.edu']) set(['gsilver(a)umich.edu']) set(['zqian(a)umich.edu']) set(['zqian(a)umich.edu']) set(['gsilver(a)umich.edu']) set(['gsilver(a)umich.edu']) set(['wagnermr(a)iupui.edu']) set(['wagnermr(a)iupui.edu']) set(['zqian(a)umich.edu']) set(['zqian(a)umich.edu']) set(['antranig(a)caret.cam.ac.uk']) set(['antranig(a)caret.cam.ac.uk']) set(['gopal.ramasammycook(a)gmail.com']) set(['gopal.ramasammycook(a)gmail.com']) set(['david.horwitz(a)uct.ac.za']) set(['david.horwitz(a)uct.ac.za']) set(['david.horwitz(a)uct.ac.za']) set(['david.horwitz(a)uct.ac.za']) set(['david.horwitz(a)uct.ac.za']) set(['david.horwitz(a)uct.ac.za']) set(['david.horwitz(a)uct.ac.za']) set(['david.horwitz(a)uct.ac.za']) set(['stephen.marquard(a)uct.ac.za']) set(['stephen.marquard(a)uct.ac.za']) set(['louis(a)media.berkeley.edu']) set(['louis(a)media.berkeley.edu']) set(['louis(a)media.berkeley.edu']) set(['louis(a)media.berkeley.edu']) set(['ray(a)media.berkeley.edu']) set(['ray(a)media.berkeley.edu']) set(['cwen(a)iupui.edu']) set(['cwen(a)iupui.edu']) set(['cwen(a)iupui.edu']) set(['cwen(a)iupui.edu']) set(['cwen(a)iupui.edu']) set(['cwen(a)iupui.edu']) There were 54 lines in the file with From as the first word Question no. 1: is there a build in function for set that parses the data for duplicates. In [18]: dir (set) Out[18]: ['__and__', '__class__', '__cmp__', '__contains__', '__delattr__', '__doc__', '__eq__', '__format__', '__ge__', '__getattribute__', '__gt__', '__hash__', '__iand__', '__init__', '__ior__', '__isub__', '__iter__', '__ixor__', '__le__', '__len__', '__lt__', '__ne__', '__new__', '__or__', '__rand__', '__reduce__', '__reduce_ex__', '__repr__', '__ror__', '__rsub__', '__rxor__', '__setattr__', '__sizeof__', '__str__', '__sub__', '__subclasshook__', '__xor__', 'add', 'clear', 'copy', 'difference', 'difference_update', 'discard', 'intersection', 'intersection_update', 'isdisjoint', 'issubset', 'issuperset', 'pop', 'remove', 'symmetric_difference', 'symmetric_difference_update', 'union', 'update'] Question no. 2: Why is there not a building function for append? Question no. 3: If all else fails, i.e., append & set, my only option is the slice the data set? Regards, Hal Sent from Surface From: Alan Gauld Sent: ‎Friday‎, ‎July‎ ‎31‎, ‎2015 ‎2‎:‎00‎ ‎AM To: Tutor(a)python.org On 31/07/15 01:25, ltc.hotspot(a)gmail.com wrote: > fname = raw_input("Enter file name: ") > if len(fname) < 1 : fname = "mbox-short.txt" > fh = open(fname) > count = 0 > for line in fh: > if not line.startswith('From'): continue > line2 = line.strip() > line3 = line2.split() > line4 = line3[1] > print line4 > count = count + 1 > print "There were", count, "lines in the file with From as the first word" > > Question: How do I remove the duplicates: OK, You now have the original code working, well done. To remove the duplicates you need to collect the addresses rather than printing them. Since you want the addresses to be unique you can use a set. You do that by first creating an empty set above the loop, let's call it addresses: addresses = set() Then replace your print statement with the set add() method: addresses.add(line4) This means that at the end of your loop you will have a set containing all of the unique addresses you found. You now print the set. You can do that directly or for more control over layout you can write another for loop that prints each address individually. print addresses or for address in addresses: print address # plus any formatting you want You can also sort the addresses by calling the sorted() function before printing: print sorted(addresses) HTH -- 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(a)python.org To unsubscribe or change subscription options: https://mail.python.org/mailman/listinfo/tutor

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a puzzle about -3**2 vs (-3)**2
by D Wyatt Aug. 2, 2015

Aug. 2, 2015

I just read in a book a little while ago that ** trumps a negative sign? I am struggling with the audacity of that as -1 is negative 1, NOT minus 1. How can an arithmetic operation trump an attribute of a negative integer? It truly makes no sense to me. Thank you for any enlightenment you can provide. Python 3.4.3 (v3.4.3:9b73f1c3e601, Feb 24 2015, 22:43:06) [MSC v.1600 32 bit (In tel)] on win32 Type "help", "copyright", "credits" or "license" for more information. >>> 3**2 9 >>> (-3)**2 9 >>> -3**2 -9 >>> -- Deb Wyatt in WA

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Python application with same name as its corresponding project
by Anthony DuPont July 31, 2015

July 31, 2015

I am trying to setup my python application in a more standard way. In my research, the general recommendation seems to be that if my application is called projectgendocs, here is an acceptable structure: ProjectParent |-- bin/ | |-- projectgendocs.py | |-- projectgendocs | |-- unittest | | |-- __init__.py | | |-- test_main.py | | | |-- __init__.py | |-- main.py | |-- setup.py |-- README It is my understanding that ProjectParent would be added to the PYTHONPATH so the projectgendocs project could be discovered for importing. The problem I am encountering is that when the bin/projectgendocs.py is run, it breaks the imports in the ProjectParent/projectgendocs files that have import projectgendocs.somefile.py I discovered this is due to the fact that the bin/projectgendocs is discovered in the search for a package called projectgendocs because the bin directory is added to the search path. I verified this by renaming the bin/projectgendocs.py file to something different. So, my question is this: How can a python application (the file installed in the bin folder) have the same name as its corresponding python project and not break the absolute imports? Or is the only way to do this is by using relative imports?

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Re: [Tutor] a puzzle about -3**2 vs (-3)**2
by Válas Péter July 31, 2015

July 31, 2015

2015-07-31 19:23 GMT+02:00 D Wyatt <fiberfolly(a)gmail.com>: > > Try to get any other result for these operations in a primary school > paper, > > and then have a look at your marks... > > > > Condescending and unhelpful response. Why did you bother? > > I tell you another way. These ARE the arithmetically correct results. Why do you expect Python give wrong ones?

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Re: [Tutor] String Attribute
by ltc.hotspot＠gmail.com July 31, 2015

July 31, 2015

Hi Alan, I rewrote the code as follows: fname = raw_input("Enter file name: ") if len(fname) < 1 : fname = "mbox-short.txt" fh = open(fname) count = 0 for line in fh: if not line.startswith('From'): continue line2 = line.strip() line3 = line2.split() line4 = line3[1] print line4 count = count + 1 print "There were", count, "lines in the file with From as the first word" Question: How do I remove the duplicates: stephen.marquard(a)uct.ac.za stephen.marquard(a)uct.ac.xn--za-tzu Mismatch louis(a)media.berkeley.edu louis(a)media.berkeley.edu zqian(a)umich.edu zqian(a)umich.edu rjlowe(a)iupui.edu rjlowe(a)iupui.edu Regards, Hal Sent from Surface From: Alan Gauld Sent: ‎Thursday‎, ‎July‎ ‎30‎, ‎2015 ‎5‎:‎04‎ ‎PM To: Tutor(a)python.org On 30/07/15 22:17, ltc.hotspot(a)gmail.com wrote: > fname = raw_input("Enter file name: ") > if len(fname) < 1 : fname = "mbox-short.txt" # assign fname > fh=open(fname,'r') # Open a new file handle > for line in fh: > print line > if 'From' in line.split()[0] and '@' in line: sender = line.split()[1] > fn.seek(0) > print sender > > Questions: Why is the loop not repeating, What makes you think so? >>No count = count +1 If you get an error(as I suspect) please post the entire error message. >>OK I would expect a name error on the last line of the loop since there is no variable fn defined. I don't know what you think the seek() is doing, but (assuming you meant fh) it will reset the file to the first line each time so you never finish the loop. >>OK > and where should I insert a split to remove 'Sat Jan 5:09:14:16 2008' > > From stephen.marquard(a)uct.ac.za Sat Jan 5 09:14:16 2008 ← Mismatch Splitting on whitespace will ensure the bit you want is in the second element >>Check the revised code, above -- 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(a)python.org To unsubscribe or change subscription options: https://mail.python.org/mailman/listinfo/tutor

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Basic question about docstrings
by David Aldrich July 31, 2015

July 31, 2015

Hi If I have a script called main.py and document a function in it: def get_value(x): """ Some text ... :param x: Some value :returns: Something useful """ What is the most basic way of showing those docstrings at the Python prompt? For getting started with documentation, is Sphinx a good way to go, or would you recommend something simpler? Best regards David

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'open' is not defined
by ltc.hotspot＠gmail.com July 31, 2015

July 31, 2015

Hi Everyone: Why is open not defined in the following code:NameError: name 'open' is not defined Code reads as follows: fname = raw_input("Enter file name: ") if len(fname) < 1 : fname = "mbox-short.txt" fh = open(fname) count = 0 for line in fh: if not line.startswith('From'): continue line2 = line.strip() line3 = line2.split() line4 = line3[1] print line4 count = count + 1 print "There were", count, "lines in the file with From as the first word" Regards, Hal Sent from Surface

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