🌐 Mailman 3 February 2017 - Python-list - python.org

Re: How to add months to a date (datetime object)?
by John_Gordon＠f38.n261.z1 Feb. 8, 2017

Feb. 8, 2017

From: John_Gordon(a)f38.n261.z1 From: John_Gordon(a)f38.n261.z1 From: John Gordon <gordon(a)panix.com> In <mailman.23.1486369390.2318.python-list(a)python.org> "Deborah Swanson" <python(a)deborahswanson.net> writes: > bajimicbiga(a)gmail.com wrote, on February 02, 2017 2:44 AM > > > > for start of month to the beginning of next month > > > > from datetime import timedelta > > from dateutil.relativedelta import relativedelta > > > > end_date = start_date + relativedelta(months=delta_period) + > > timedelta(days=-delta_period) > Where do you define 'delta_period', and what is your question? There is no question; it is an answer in response to the original post asking how to add months to a datetime object. -- John Gordon A is for Amy, who fell down the stairs gordon(a)panix.com B is for Basil, assaulted by bears -- Edward Gorey, "The Gashlycrumb Tinies"

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Re: Coding issue with XML for word document
by Deborah_Swanson＠f38.n261.z1 Feb. 8, 2017

Feb. 8, 2017

From: "Deborah Swanson" <python(a)deborahswanson.net> Cute, whoever you are. Very cute. (I know how to sign up for fake email addresses too.) > -----Original Message----- > From: Python-list > [mailto:python-list-bounces+python=deborahswanson.net@python.o > rg] On Behalf Of Deborah_Swanson(a)f38.n261.z1 > Sent: Monday, February 06, 2017 9:52 AM > To: python-list(a)python.org > Subject: Re: Coding issue with XML for word document > > > From: "Deborah Swanson" <python(a)deborahswanson.net> > > I don't see any Python in your code. The python.org list > isn't generally familiar with Microsoft proprietary code, > which is often quite different from other versions. Try > asking this question in Microsoft's Office/Word Document > forums. Good luck! > > > accessnewbie(a)gmail.com wrote, on February 06, 2017 5:00 PM > Subject: Coding issue with XML for word document > > > > > > I am constructing a sentence to insert into a word xml template. My > > code is below > > > > ------------------------ > > #Create a list > > > > if len(myList) > 0: > > if len(myList) > 1: > > testText = list_format(myList) + " dealers." > > else: > > myText = myList[0] + " dealer." > > > > #Contruct sentence > > > > #myBlurb = "<w:cr/><w:r><w:rPr><w:b/></w:rPr><w:t>My > > Favorite Cars - </w:t></w:r><w:r><w:t> My favorite cars are > available > > at </w:t></w:r>" + myText + "<w:cr/>" > > myBlurb = "<w:cr/>My Favorite Cars - My favorite cars are > > available at " + myText + "<w:cr/>" > > else: > > myBlurb = "" > > > > > > ------------------------------------------- > > > > If a list exists (not = 0) Then > > > > I am trying to get the following output: > > > > My Favorite Cars - My favorite cars are available at (list of > > dealers) dealers. > > > > There is a newline above and below this line. The first three words > > and the dash are bold. All other words are regular. > > > > This works > > > > myBlurb = "<w:cr/>My Favorite Cars - My favorite cars are > available at > > " + myText + "<w:cr/>" > > > > But when I try to bold, it bombs. It does not seem to like > either of > > these (+ myText + "<w:cr/>") (separately or > > together) appended on the end. > > > > Thia does not work > > > > myBlurb = "<w:cr/><w:r><w:rPr><w:b/></w:rPr><w:t>My Favorite Cars - > > </w:t></w:r><w:r><w:t> My favorite cars are available at > </w:t></w:r>" > > + myText + "<w:cr/> > > > > What am I missing here? > > -- > > https://mail.python.org/mailman/listinfo/python-list > > > > -- > https://mail.python.org/mailman/listinfo/python-list >

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Re: How to store properties
by Cecil_Westerhof＠f38.n261.z1 Feb. 8, 2017

Feb. 8, 2017

From: Cecil Westerhof <Cecil(a)decebal.nl> On Wednesday 8 Feb 2017 13:11 CET, Peter Heitzer wrote: > Cecil Westerhof <Cecil(a)decebal.nl> wrote: >> In Java you (can) use a properties file store configuration. What >> is the best way to do something like that in Python? I saw >> ConfigParser, but have the feeling that it is not really used. >> Would a JSON file be a good idea? > > If you only want to read the configuration, just use an ordinary > file you import. For example config.py contains the lines: > username=myuser > server=myserver > password=secret > > In your script: > > import config > > Now you can referenc all the variables via config.<name>, e.g. > config.username That I know, but it is a security risk. > Another method would be a dictionary for your config. You could > pickle and unpickle it. Is pickle not discouraged? Better to use a JSON file I think. -- Cecil Westerhof Senior Software Engineer LinkedIn: http://www.linkedin.com/in/cecilwesterhof

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Re: How to store properties
by Michael_Torrie＠f38.n261.z1 Feb. 8, 2017

Feb. 8, 2017

From: Michael Torrie <torriem(a)gmail.com> On 02/08/2017 04:26 AM, Cecil Westerhof wrote: > In Java you (can) use a properties file store configuration. What is > the best way to do something like that in Python? > I saw ConfigParser, but have the feeling that it is not really used. > Would a JSON file be a good idea? I've used ConfigParser before. I think the relative simpleness of .INI files. If I was expecting end users to manipulate a config file, I would use ConfigParser. But 90% of the time, I just use another python module. For my purposes, there is no security risk to it. Due to its nature, Django also uses python modules to define configuration such as URL maps, etc. When I'm using GTK+, I would use the gsettings facilities of GTK+ to store and retrieve config variables. And with Qt, I'd use QSettings. I think in both cases they use backends appropriate for the operating system. On Windows, that would be registry settings in the user hive.

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Re: How to configure trusted CA certificates for SSL client?
by MeV Feb. 8, 2017

Feb. 8, 2017

On Tuesday, February 7, 2017 at 9:42:54 AM UTC-8, Yang, Gang CTR (US) wrote: > My question is where does SSL client code get the trusted CA certificates from, from Python or the underlying OS? What configuration do I need in order for the SSL client to conduct the SSL handshake successfully? > When I setup TLS for a K/V pair database with self-signed certs, I could supply two types of certs -peer certs with the IP and DNS name tied to the node signed by the self-signed CA I generated -client cert that had the IP and DNS for ALL the machines in the cluster signed by the CA To connect to the any of the clients, I had to provide the client cert, key, and the CA. That's just the way the software built. For browsers, each browser has a CA from various authorities and you add an intermediate key signed by one of those authorities (e.g. Verisign which costs $2000) to the browser to allow you to access a specific domain through a wildcard cert. My K/V software didn't support that. Look at how CentOS 6 stores it's certs in /etc/pki. I think where you'd put your CA + client key bundle. Which means you have to do this for all machines that run your code. That's not optimal or at all portable. You'll probably have to deliver the app as a VM or a docker container to put it all together. Good luck.

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Re: Coding issue with XML for word document
by Pavol_Lisy＠f38.n261.z1 Feb. 7, 2017

Feb. 7, 2017

From: Pavol Lisy <pavol.lisy(a)gmail.com> On 2/7/17, Steven D'Aprano <steve(a)pearwood.info> wrote: > On Mon, 06 Feb 2017 17:00:25 -0800, accessnewbie wrote: [...] >> But when I try to bold, it bombs. It does not seem to like either of >> these (+ myText + "<w:cr/>") (separately or together) appended on the >> end. > > How are you trying to bold? If you're programming in a word processor, > and you apply bold to your code, that won't work. > > What do you mean, "bombs"? Do you literally mean you are running a > classic Macintosh from the 1990s and you are getting a fatal System Error > in a "Bomb" dialog box? > > Otherwise, please be more precise: do you get a Blue Screen of Death? A > kernel panic? Does the Python interpreter segfault? Or do you get an > ordinary Python traceback? > > If it is an ordinary Python traceback, don't keep it a secret -- tell us > what it says. COPY AND PASTE the traceback, in full, not just the last > line. I am afraid he means that it create mishmash in word document... Dear accessnewbie I propose divide problem to smaller subproblems. For example make python code as simple as possible (avoid python part if you could! As Deborah wrote it is very probably not problem in python) And try to explicitly try to write example text where is bold part. #myBlurb = "<w:cr/><w:r><w:rPr><w:b/></w:rPr><w:t>My Favorite Cars - </w:t></w:r><w:r><w:t> My favorite cars are available at </w:t></w:r>" + myText + "<w:cr/>" myBlurb = "<w:cr/><w:r><w:rPr><w:b/></w:rPr><w:t>My Favorite Cars - </w:t></w:r><w:r><w:t> My favorite cars are available at </w:t></w:r> my garage <w:cr/>" if it is still wrong try to make more and more similar text to: myBlurb = "<w:cr/>My Favorite Cars - My favorite cars are available at my garage<w:cr/>" I mean for example remove "<w:rPr><w:b/></w:rPr>" part etc. Second - This is probably not your problem (unless you have special char in your example myList) but if you could have xml spec chars in your input then python could help. See example -> >>> from xml.sax.saxutils import escape >>> escape("< & >") '< & >' myBlurb = "<w:cr/>My Favorite Cars - My favorite cars are available at " + escape(myText) + "<w:cr/>" # this is safer than your code! I hope you understand why it is useful. :)

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Re: best way to ensure './' is at beginning of sys.path?
by Steve D'Aprano Feb. 7, 2017

Feb. 7, 2017

On Mon, 6 Feb 2017 09:26 am, Chris Angelico wrote: > On Mon, Feb 6, 2017 at 9:07 AM, Steve D'Aprano > <steve+python(a)pearwood.info> wrote: >> As far as "regular backups", well, you're just not thinking deviously >> enough. If I were to write a ransomware application, running as the >> regular user, I would have the application encrypt files and emails just >> a few at a time, over a period of many weeks, gradually increasing the >> rate. By the time the victim has realised that their files have been >> encrypted, their backups have been compromised too: you can restore from >> backup, but you'll be restoring the encrypted version. >> > > If you commit everything to git git is not a synonym for "version control system". You're going to put the emails you send into subversion before hitting send? What about the emails you receive? How about graphic and video designers? Just how well does hg cope with gigabytes of video data? *Maybe* applications like LibreOffice could be integrated with VCS, and that's actually not a bad idea, but for binary files that can get costly. Yes, hard drives are big, but if every time you hit Ctrl-S on a 400K spreadsheet you end up with another copy, plus overhead, that adds up quickly. Not everyone is going to either want, or be able to, keep multiple years worth of versioning data for all their content. (Let's not forget that Android phones and tablets are Linux too. Some people use Android as their main, or only, computing platform, with relatively restricted resources. Not everyone has 10TB of storage on their computer.) > and keep an eye on your diffs before you push, Every time you push a file, you're going to check whether every other file in your home directory has changed? > the encryption would have to be _extremely_ sneaky. For > starters, it'd have to infect the 'git' command, so it has all the > same protections other people have been talking about. Not at all. All it would need to do is mess with the git database behind the scenes: when encrypting file X, delete all the diffs for X. Or simply corrupt the repository. If people did this, then there would be an arms race with others writing software to repair the damage to the repository, or changing their backup regimen to include backing up the repo history (if you're not already doing this) but then the same problem applies: if the repo is corrupted subtly enough, you may not notice until the backups are all corrupted too. And of course, sometimes backups don't work... https://www.theregister.co.uk/2017/02/01/gitlab_data_loss/ > It'd need to > somehow make the SHA1s match, or else simultaneously infect my system > and whereever I'm pushing to (which is sometimes GitHub and sometimes > my own server). So the first thing is to infect everyone's git so it > accepts the corrupted files as well as the correct ones... AND it has > to still be able to show diffs, or I'd notice it very quickly. How will you notice? You edit file "funny_video_about_a_cat.mp4" and push it into VCS. Meanwhile the malware encrypts "birthday_party_invites.doc", pushes it into the repo *as you*, and once the encrypted version is there, deletes all the past history for that file. Because the encrypted version is now in the repo, you won't notice the file has changed until you try to open it in the word processor. Which you might not do until your next birthday, a year from now. Unless you make a habit of studying *in detail* the complete history of everything in the repo, *and* have a good enough memory to say "wait a minute, I didn't edit that file on November 16th, something is suspicious", a sufficiently sneaky and clever ransomware app will be able to subvert your VCS. Of course, so long as there are millions of Windows users with no backups, there are easier fish to fry. But consider that not all malware is targeted at arbitrary people. "Advanced Persistent Threats" may be targeted at you specifically, for any value of "you". > Is that still frightening complacency? Talk is cheap -- do you actually push everything into VCS and regularly check it for corruption and unexpected changes, or are you just suggesting this is what you will do if and when such sneaky malware starts targeting Linux users? Personally I'm not losing any sleep over this -- but that's because I am complacent, secure in the knowledge that I'm not important enough to have the sort of enemies that will build an APT against me, and that ordinary ransomware criminals have got easier targets to go after. :-) -- Steve “Cheer up,” they said, “things could be worse.” So I cheered up, and sure enough, things got worse.

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What's with all the messages from @f38.n261.z1
by Michael Torrie Feb. 7, 2017

Feb. 7, 2017

Seems like we're getting a bunch of messages on the mailing list that appear to be copies of real member posts that are saying they are from @f38.n261.z1? They don't appear to be deliberate impersonations. Some misconfigured server reflecting messages back to the list perhaps?

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Strategies when hunting for dictionary corruption
by Skip Montanaro Feb. 7, 2017

Feb. 7, 2017

I'm wrapping some C++ libraries using pybind11. On the pybind11 side of things, I've written a simple type converter between Python's datetime.date objects and our internal C++ date objects. The first thing the type converter needs to do is to insure that the datetime C API is initialized: if (!PyDateTimeAPI) { PyDateTime_IMPORT; } This is failing because a dictionary internal to the import mechanism is being corrupted, the extensions dict in import.c. I highly doubt this is a Python issue. It's much more likely to be a bug in our C++ libraries or in pybind11. The problem is, dictionaries being rather dynamic objects (growing and sometimes shrinking), the actual data location which might be corrupted isn't fixed, but can move around. I've got a Python interpreter configured using --with-pydebug, it's compiled with -ggdb -O0, and I'm ready to watch some memory locations, but it's not clear what exactly I should watch or how/when to move my watchpoint(s) around. Should I not be thinking in terms of watchpoints? Is there a better way to approach this problem? (I also have valgrind at my disposal, but am not very skilled in its use.) Thx, Skip

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Re: Coding issue with XML for word document
by Deborah_Swanson＠f38.n261.z1 Feb. 7, 2017

Feb. 7, 2017

From: "Deborah Swanson" <python(a)deborahswanson.net> I don't see any Python in your code. The python.org list isn't generally familiar with Microsoft proprietary code, which is often quite different from other versions. Try asking this question in Microsoft's Office/Word Document forums. Good luck! accessnewbie(a)gmail.com wrote, on February 06, 2017 5:00 PM Subject: Coding issue with XML for word document > > > I am constructing a sentence to insert into a word xml > template. My code is below > > ------------------------ > #Create a list > > if len(myList) > 0: > if len(myList) > 1: > testText = list_format(myList) + " dealers." > else: > myText = myList[0] + " dealer." > > #Contruct sentence > > #myBlurb = "<w:cr/><w:r><w:rPr><w:b/></w:rPr><w:t>My > Favorite Cars - </w:t></w:r><w:r><w:t> My favorite cars are > available at </w:t></w:r>" + myText + "<w:cr/>" > myBlurb = "<w:cr/>My Favorite Cars - My favorite cars are > available at " + myText + "<w:cr/>" > else: > myBlurb = "" > > > ------------------------------------------- > > If a list exists (not = 0) Then > > I am trying to get the following output: > > My Favorite Cars - My favorite cars are available at (list of > dealers) dealers. > > There is a newline above and below this line. The first three > words and the dash are bold. All other words are regular. > > This works > > myBlurb = "<w:cr/>My Favorite Cars - My favorite cars are > available at " + myText + "<w:cr/>" > > But when I try to bold, it bombs. It does not seem to like > either of these (+ myText + "<w:cr/>") (separately or > together) appended on the end. > > Thia does not work > > myBlurb = "<w:cr/><w:r><w:rPr><w:b/></w:rPr><w:t>My Favorite > Cars - </w:t></w:r><w:r><w:t> My favorite cars are available > at </w:t></w:r>" + myText + "<w:cr/> > > What am I missing here? > -- > https://mail.python.org/mailman/listinfo/python-list >

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