permission issue with zipfile
I am getting a permission issue with the following code targetDirectory = '/data/upload' self.ZIPFileName = targetDirectory + os.sep + "MY.ZIP" zf = zipfile.ZipFile(self.ZIPFileName, mode='w') [Errno 13] Permission denied: '/data/upload/MY.ZIP' The target directory is an NFS mounted directory. I can manually create a file in that directory with no issues using the same user Any ideas? Python version is 2.7.10. Platform is Centos 7 -- https://mail.python.org/mailman/listinfo/python-list
Permissions issues with zipfile
I am getting a permission issue with the following code targetdirectory = '/data/upload' self.ZIPFileName = targetDirectory + os.sep + "MY.ZIP" zf = zipfile.ZipFile(self.ZIPFileName, mode='w') [Errno 13] Permission denied: '/data/upload/MY.ZIP' The target directory is an NFS mounted directory. I can manually create a file in that directory with no issues using the same user Any ideas? Python version is 2.7.10. Platform is Centos 7 -- https://mail.python.org/mailman/listinfo/python-list
Issue with zipfile and symbolic link
I am reading a list of pdf files from a directory which is a symbolic link and adding them to a zip file. Issue I have is that the zip files are being added as empty directories rather than the actual pdf files. My code is below. Any idea why this happening? # ZIP pdfs subdirectory if it exists sourcefile = self._dir + os.sep + "pdfs" targetname = "pdfs" if os.path.exists(sourcefile): zf.write(sourcefile,targetname, compress_type=compression) for file in os.listdir(sourcefile): targetname = "pdfs" + os.sep + file zf.write(sourcefile,targetname, compress_type=compression) # Close zip file zf.close() -- https://mail.python.org/mailman/listinfo/python-list
newbie question re classes and self
Can I pass self(or all its variables) to a class? Basically, how do I make all the variables defined in self in the calling python script available to the python class I want to call? -- https://mail.python.org/mailman/listinfo/python-list
Extract sigle file from zip file based on file extension
I need to be able to extract a single file from a .zip file in python. The zip file will contain many files. The file to extract will be the only .csv file in the zip, but the full name of the csv file will not be known. Can this be done in python? -- https://mail.python.org/mailman/listinfo/python-list
ZipImportError: can't find module
I am suddenly having a problem with importing a module from a zip file in Python 2.4.1 What has been working for years suddenly has an error : zipimport.ZipImportError: can't find module 'mymodule' PYTHONPATH is correct, it points to the zip file containing mymodule N.B. the python script(unchanged) is called from a shell script using python myscript.py The python script also has a shebang line that references the 2.4.1 install of Python. Debugging the script shows that PYTHONPATH is set correctly, it points to the zip file containing mymodule Any ideas? Platform is Solaris 10 -- https://mail.python.org/mailman/listinfo/python-list
smtplib not working when python run under windows service via Local System account
I have a python 2.7.10 script which is being run under a windows service on windows 2012 server . The python script uses smtplib to send an email. It works fine when the windows service is run as a local user, but not when the windows service is configured to run as Local System account. I get no exception from smtplib, but the email fails to arrive. Any ideas? -- https://mail.python.org/mailman/listinfo/python-list
Re: Can't run lpr from python on windows 2012 server
Yes it does. I finally found the solution here :
http://www.tomshardware.co.uk/forum/240019-44-error-windows
Copied lpr.exe, lprhelp.dll, and lprmonui.dll from the System32 folder to the
sysWOW64 folder
On Friday, April 22, 2016 at 3:27:18 PM UTC+1, Random832 wrote:
> On Fri, Apr 22, 2016, at 10:15, loial wrote:
> > I am reposting this question in a simpler form.
> >
> > I can run lpr from the command prompt but not from python
> >
> > os.system("notepad") works
> > os.system("lpr") does not work. Basically it says lpr is not a known
> > program or executable
> >
> > Why can I run lpr from the windows command prompt but not from
> > python(2.7)
>
> Does lpr.exe actually physically exist in c:\windows\system32 as you
> have indicated in the your earlier posts? I.e. if you actually browse
> system32 with the file manager will you see lpr.exe? The problem with
> your question is that it's not a standard command, so none of the rest
> of us have it, which means we're half-blind trying to find your problem.
--
https://mail.python.org/mailman/listinfo/python-list
Re: Running lpr on windows from python
I finally found the solution here : http://www.tomshardware.co.uk/forum/240019-44-error-windows Copied lpr.exe, lprhelp.dll, and lprmonui.dll from the System32 folder to the sysWOW64 folder Thanks for all your efforts -- https://mail.python.org/mailman/listinfo/python-list
Can't run lpr from python on windows 2012 server
I am reposting this question in a simpler form.
I can run lpr from the command prompt but not from python
os.system("notepad") works
os.system("lpr") does not work. Basically it says lpr is not a known program or
executable
Why can I run lpr from the windows command prompt but not from python(2.7)
--
https://mail.python.org/mailman/listinfo/python-list
Re: Running lpr on windows from python
Nothing seems to work.
Even doing
import os
os.system("lpr")
still returns
'lpr' is not recognized as an internal or external command,operable program or
batch file.
Even though I can run lpr fine from the command prompt
--
https://mail.python.org/mailman/listinfo/python-list
Re: Running lpr on windows from python
I get the same issue if I just specify "lpr" rather than a full path, i.e. it works from the command prompt(with forward slashes), but not from python -- https://mail.python.org/mailman/listinfo/python-list
Re: Running lpr on windows from python
As I said, the lpr command works fine from the command prompt but not from python. Everything is 64-bit (windows server 2012). -- https://mail.python.org/mailman/listinfo/python-list
Running lpr on windows from python
I am trying to run lpr from python 2.7.10 on windows However I always get the error 'C:/windows/system32/lpr.exe ' is not recognized as an internal or external command, operable program or batch file. Even though typing the same at the command prompt works OK Any ideas? I am using subprocess as follows process = subprocess.Popen(commandline, shell=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE) where command line is C:/windows/system32/lpr.exe -S 172.28.84.38 -P RAW C:/john/myfile -- https://mail.python.org/mailman/listinfo/python-list
can't decompress data; zlib not available
I am migrating a python script from Red hat linux REL 6.6 to AIX 7.1 I am using python 2.7.10 On AIX I the ror zipimport.ZipImportError: can't decompress data; zlib not available Any ideas how to get this to work on AIX? -- https://mail.python.org/mailman/listinfo/python-list
Modify environment variable for subprocess
I need to modify the LIBPATH environment variable when running a process via subprocess, but otherwise retain the existing environment. Whats the best way to do that? -- https://mail.python.org/mailman/listinfo/python-list
Re: passing double quotes in subprocess
Yep, that did the trick...cheers On Tuesday, September 8, 2015 at 12:04:05 PM UTC+1, loial wrote: > I need to execute an external shell script via subprocess on Linux. > > One of the parameters needs to be passed inside double quotes > > But the double quotes do not appear to be passed to the script > > I am using : > > myscript = '/home/john/myscript' > commandline = myscript + ' ' + '\"Hello\"' > > process = subprocess.Popen(commandline, shell=True, stdout=subprocess.PIPE, > stderr=subprocess.PIPE) > output,err = process.communicate() > > > if I make the call from another shell script and escape the double quotes it > works fine, but not when I use python and subprocess. > > I have googled this but cannot find a solution...is there one? -- https://mail.python.org/mailman/listinfo/python-list
passing double quotes in subprocess
I need to execute an external shell script via subprocess on Linux. One of the parameters needs to be passed inside double quotes But the double quotes do not appear to be passed to the script I am using : myscript = '/home/john/myscript' commandline = myscript + ' ' + '\"Hello\"' process = subprocess.Popen(commandline, shell=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE) output,err = process.communicate() if I make the call from another shell script and escape the double quotes it works fine, but not when I use python and subprocess. I have googled this but cannot find a solution...is there one? -- https://mail.python.org/mailman/listinfo/python-list
U.K. Royal Mail MailMark web service from python?
Anyone out there got any examples of calling the UK Royal Mail Mailmark web service from python? -- https://mail.python.org/mailman/listinfo/python-list
Re: Concatenate list values
Many thanks for those you chose to help me out. Problem solved. -- https://mail.python.org/mailman/listinfo/python-list
Concatenate list values
Is there a quick way to concatenate all the values in a list into a string, except the first value? I want this to work with variable length lists. All values in list will be strings. Any help appreciated -- https://mail.python.org/mailman/listinfo/python-list
Re: Python path on windows
On Friday, February 20, 2015 at 2:54:26 PM UTC, Ian wrote: > On Feb 20, 2015 7:46 AM, "loial" wrote: > > > > > > On Linux we use > > > #!/usr/bin/env python > > > > > > At the start of scripts to ensure that the python executable used is the > > one defined in the PATH variable, rather than hardcoding a path to the > > python executable. > > > > > > What is the equivalent functionality in Windows? > > https://docs.python.org/3/using/windows.html#launcher > > Note that while the launcher can be used with any version of Python, it is > only packaged with 3.3+. Vesrion is 2.6 -- https://mail.python.org/mailman/listinfo/python-list
Python path on windows
On Linux we use #!/usr/bin/env python At the start of scripts to ensure that the python executable used is the one defined in the PATH variable, rather than hardcoding a path to the python executable. What is the equivalent functionality in Windows? -- https://mail.python.org/mailman/listinfo/python-list
Web services from python
What is the best package to use with python 2.6 to access Web services. Is it ZSI? Can anyone recommend a good tutorial, preferably with a sandbox web service? -- https://mail.python.org/mailman/listinfo/python-list
reading file in for loop
If I read a file using a for loop, as follows, is the file left open if I execute a break in the for loop? for line in open(myFile).readlines(): if something: break -- https://mail.python.org/mailman/listinfo/python-list
capturing SNMP trap events
I want to monitor printers for events such as the completion of printing. If the printer initiates an SNMP trap event when the job has finished printing, how can I capture this? Presumably I need some sort of deamon to listen for these trap messages. I have looked at pySNMP but am not sure if this can be used to capture SNMP trap events from the printer. -- https://mail.python.org/mailman/listinfo/python-list
Re: find and replace string in binary file
Thanks Emile.
Unfortunately I have to use python 2.6 for this
On Wednesday, 5 March 2014 00:13:00 UTC, emile wrote:
> On 03/04/2014 02:44 PM, Chris Angelico wrote:
>
> > On Wed, Mar 5, 2014 at 12:18 AM, Peter Otten <__pete...@web.de> wrote:
>
> >> loial wrote:
>
> >>
>
> >>> How do I read a binary file, find/identify a character string and replace
>
> >>> it with another character string and write out to another file?
>
> >>>
>
> >>> Its the finding of the string in a binary file that I am not clear on.
>
> >>
>
> >> That's not possible. You have to convert either binary to string or string
>
> >> to binary before you can replace. Whatever you choose, you have to know the
>
> >> encoding of the file.
>
> >
>
> > If it's actually a binary file (as in, an executable, or an image, or
>
> > something), then the *file* won't have an encoding, so you'll need to
>
> > know the encoding of the particular string you want and encode your
>
> > string to bytes.
>
>
>
>
>
> On 2.7 it's as easy as it sounds without having to think much about
>
> encodings and such. I find it mostly just works.
>
>
>
> emile@paj39:~$ which python
>
> /usr/bin/python
>
> emile@paj39:~$ python
>
> Python 2.7.3 (default, Sep 26 2013, 16:38:10)
>
> [GCC 4.7.2] on linux2
>
> Type "help", "copyright", "credits" or "license" for more information.
>
> >>> image = open('/usr/bin/python','rb').read()
>
> >>> image.find("""Type "help", "copyright", "credits" """)
>
> 1491592
>
> >>> image = image[:1491592]+"Echo"+image[1491592+4:]
>
> >>> open('/home/emile/pyecho','wb').write(image)
>
> >>>
>
> emile@paj39:~$ chmod a+x /home/emile/pyecho
>
> emile@paj39:~$ /home/emile/pyecho
>
> Python 2.7.3 (default, Sep 26 2013, 16:38:10)
>
> [GCC 4.7.2] on linux2
>
> Echo "help", "copyright", "credits" or "license" for more information.
>
>
>
> YMMV,
>
>
>
> Emile
--
https://mail.python.org/mailman/listinfo/python-list
find and replace string in binary file
How do I read a binary file, find/identify a character string and replace it with another character string and write out to another file? Its the finding of the string in a binary file that I am not clear on. Any help appreciated -- https://mail.python.org/mailman/listinfo/python-list
Re: Add directory to sys.path based on variable
Idiot that I am...I was not calling the script with the full path ! Thanks for your help -- https://mail.python.org/mailman/listinfo/python-list
Re: Add directory to sys.path based on variable
Ok, that works fine with the apth hard coded, but I want to do something like
the code below. i.e I am trying to dynamically add a path that is relative to
the path of the current executing python script.
In this case the import fails.
import sys
import os
from os.path import *
scriptpath=os.path.dirname(sys.argv[0])
otherscriptspath=printerpath.replace("scripts","otherscripts")
sys.path.append(otherscriptspath)
from AuditUpdate import *
--
https://mail.python.org/mailman/listinfo/python-list
Add directory to sys.path based on variable
I want to add a path to sys.path based upon a variable Can I do that? Hardcodeing the path works fine, but I want to set it based upon a variable. I know I can set PYTHONPATH, but just wondering if I can add a directory on the fly to sys.path using a variable -- https://mail.python.org/mailman/listinfo/python-list
Using netrc when user password is blank
I am having issues using the netrc package for users where the password is blank. It works fine for users with password is not blank and is spacified in the .netrc I am not sure if this is an issue with the .netrc file or my use of the .netrc package. .netrc file looks like : machine myserver login john password Code is username, ignore, password = netrc.netrc().hosts[hostname] This fails saying the .netrc is malformed. How should I specify the line in the .netc when the password is blank? Or is it not possible -- https://mail.python.org/mailman/listinfo/python-list
Re: How to clean up socket connection to printer
Well, I certainly suspect the customers network connection to the printer which is over a WAN across half of Europe, but proving that is the problem is another matter. I can replicate a "Connection reset by peer" error on own printer by pulling the network cable out of the printer. And again I thereafter get the issue of "Connection refused" for what seems a variable amount of time. But at least I am now reassured that the "Connection Refused" is not due to something my script has not cleaned up. Thanks -- http://mail.python.org/mailman/listinfo/python-list
Re: How to clean up socket connection to printer
Replies to questions : 1. Does the printer accept connections again after some time? Yes, bit seems to vary how long that takes 2. Does the printer accept connections if you close and re-open the Python interpreter? Not after a Connection reset error. The script exits after trapping the "Connection reset by peer" error and it is only when a new instance of the script is kicked off that the "Connection refused" issue is encountered. 3. Is there actually a limit to the number of concurrent connections? In other words, what happens when you try to create a second connection without closing the first? I get the Connction refused error in that scenerio too, but as my script exits after detecting the "Connection reset by peer error" there is only ever one instance of my script running(and therefore one attempt to connect) at a time, Which is why I am wondering whether the connection is closed properly by my code when the script exits afer the "Connection reset by peer" error. Or is it the printer not cleaning up the connection.? -- http://mail.python.org/mailman/listinfo/python-list
How to clean up socket connection to printer
I have a socket application that is connecting to a HP printer via port 9100. Occassionally I get a "Connection reset by peer" error which I am trapping and exiting the script with an error message. That works Ok, the issue I have is that the next time I run the script I get "Connection refused" from the printer, which suggests that the printer still thinks the port is is busy, though nothing is printing. I suspect that in some way my socket connection has not been closed correctly? When I get the "Connection rest by peer" error, I attempt to close the port as follows : try: sock.close() del sock except Exception, e: pass Is there anything else I should do in these circumstances to ensure that my socket connection is closed OK? -- http://mail.python.org/mailman/listinfo/python-list
Diagnosing socket "Connection reset by peer"
I have a sockets client that is connecting to a printer and occassionally getting the error "104 Connection reset by peer" I have not been able to diagnose what is causing this. Is there any additional traceing I can do(either within my python code or on the network) to establish what is causing this error? Currently I am simply trapping socket.erruor Python version is 2.6 -- http://mail.python.org/mailman/listinfo/python-list
How to raise a socket "104 connection reset by peer error"
For testing purposes I want my code to raise a socket "connection reset by peer" error, so that I can test how I handle it, but I am not sure how to raise the error. Any advice appreciated -- http://mail.python.org/mailman/listinfo/python-list
spilt question
I want to split a string so that I always return everything BEFORE the LAST underscore HELLO_.lst # should return HELLO HELLO_GOODBYE_.ls # should return HELLO_GOODBYE I have tried with rsplit but cannot get it to work. Any help appreciated -- http://mail.python.org/mailman/listinfo/python-list
subprocess question re waiting
I want to call a child process to run a shell script and wait for that script to finish. Will the code below wait for the script to finish? If not then how do I make it wait? Any help appreciated. import subprocess command = "/home/john/myscript" process = subprocess.Popen(command, stdin=subprocess.PIPE,stdout=subprocess.PIPE, stderr=subprocess.PIPE, close_fds=True, shell=True) out, err = process.communicate() returncode = process.returncode -- http://mail.python.org/mailman/listinfo/python-list
Re: Reading file issue
Thanks for confirming my sanity
On Monday, 28 January 2013 11:57:43 UTC, Chris Angelico wrote:
> On Mon, Jan 28, 2013 at 10:47 PM, loial wrote: > I am
> parseing a file to extract data, but am seeing the file being updated even
> though I never explicitly write to the file. It is possible that another
> process is doing this at some later time, but I just want to check that
> opening the file as follows and ignoring a record would not result in that
> record being removed from the file. > > I'm damned sure it wouldn't, but just
> wanted to check with the experts!. > > for line in open("/home/john/myfile"):
> Absolutely not. You're opening the file (by default) for reading only. That's
> not going to edit the file in any way. (It might cause the directory entry to
> be rewritten, eg last-access time, but not the file contents.) Your
> expectation is 100% correct. ChrisA
--
http://mail.python.org/mailman/listinfo/python-list
Reading file issue
I am parseing a file to extract data, but am seeing the file being updated even
though I never explicitly write to the file. It is possible that another
process is doing this at some later time, but I just want to check that opening
the file as follows and ignoring a record would not result in that record being
removed from the file.
I'm damned sure it wouldn't, but just wanted to check with the experts!.
for line in open("/home/john/myfile"):
linecount = linecount + 1
if linecount == 1: # ignore header
continue
--
http://mail.python.org/mailman/listinfo/python-list
Find lowest level directory
How can I find the full path of the lowest level directory in a directory structure? If there is more than one directory at the lowest level, the first one found will be enough. Any help appreciated -- http://mail.python.org/mailman/listinfo/python-list
Re: string contains and special characters
On Tuesday, 9 October 2012 15:19:33 UTC+1, Agon Hajdari wrote:
> On 10/09/2012 04:02 PM, loial wrote: > I am trying to match a string that
> containing the "<" and ">" characters, using the string contains function,
> but it never seems to find the lines containing the string > > e.g if
> mystring.contains("") : > > Do I need to escape the characters...and if
> so how? > if '' in yourstring: # your code -- Agon Hajdari
That worked...thanks
--
http://mail.python.org/mailman/listinfo/python-list
string contains and special characters
I am trying to match a string that containing the "<" and ">" characters, using
the string contains function, but it never seems to find the lines containing
the string
e.g if mystring.contains("") :
Do I need to escape the characters...and if so how?
--
http://mail.python.org/mailman/listinfo/python-list
sockets,threads and interupts
I have threaded python script that uses sockets to monitor network ports. I want to ensure that the socket is closed cleanly in all circumstances. This includes if the script is killed or interupted in some other way. As I understand it signal only works in the main thread, so how can I trap interupts in my threaded class and always ensure I close the socket? Using KeyboardInterupt does not seem to work. -- http://mail.python.org/mailman/listinfo/python-list
Threads and sockets
I am writing an application to send data to a printer port(9100) and then recieve PJL responses back on that port. Because of the way PJL works I have to do both in the same process(script). At the moment I do not start to read responses until the data has been sent to the printer. However it seems I am missing some responses from the printer whilst sending the data, so I need to be able to do the 2 things at the same time. Can I open a port once and then use 2 different threads, one to write to the post and one to read the responses)? -- http://mail.python.org/mailman/listinfo/python-list
pycups
I am looking to monitor print jobs on linux via python. pycups looks a possibility, but I cannot find any useful tutorial, examples of how to use it. Can anyone help? -- http://mail.python.org/mailman/listinfo/python-list
Re: newbie socket help
OS is Red hat enterprise linux 5.5 and python version is 2.6 On Feb 2, 4:34 pm, Dennis Lee Bieber wrote: > On Thu, 2 Feb 2012 05:53:22 -0800 (PST), loial > wrote: > > >I am trying to write a python script to read data from a printer port > >using python sockets, but it seems I am locking up the port. > > >Is there a way to ensure that I do not block the port to other > >applications? > > >My knowledge of python sockets is minimal, so any help would be > >appreciated. > > OS and Python version might be of interest... > > However, parallel ports are typically unshared devices (which is why > any multitasking system has things like print spooling -- so multiple > tasks and "print" to the spool, and the spool driver is the only process > actually accessing the printer port). > > I still have nightmares over one assignment I had some 8 years ago: > Reading a clock signal (square wave) on one of the parallel port's > signal pins, in order to time a three-bit /balanced/ (using 6-pins of > the output) data stream. Done on a W98 laptop (since W98 didn't have the > protected ports of WinXP) using Visual C++ -- and on the laptop as the > eventual plan had been to send "red" GPS decryption keys to satellites; > contact with "red" keys makes the hardware it passes through highly > classified, and the main hardware had to stay "open" for uncleared > developers working on flight software. > > Unfortunately, even with the program running at the highest > available Windows priority, the OS still did every few > milliseconds, which led to glitches in the output stream. (The good > news: by the time the DTD with the keys became available, the CONOPS had > changed to use "black" keys, which did not "infect" the computer system > -- so the regular command formatter could be used for uploading). > > -- > Wulfraed Dennis Lee Bieber AF6VN > wlfr...@ix.netcom.com HTTP://wlfraed.home.netcom.com/ -- http://mail.python.org/mailman/listinfo/python-list
newbie socket help
I am trying to write a python script to read data from a printer port using python sockets, but it seems I am locking up the port. Is there a way to ensure that I do not block the port to other applications? My knowledge of python sockets is minimal, so any help would be appreciated. -- http://mail.python.org/mailman/listinfo/python-list
Hardlink sub-directories and files
I am trying to hardlink all files in a directory structure using os.link. This works fine for files, but the directory also contains sub- directories (which themselves contain files and sub-directories). However I do not think it is possible to hard link directories ? So presumably I would need to do a mkdir for each sub-directory encountered? Or is there an easier way to hardlink everything in a directory structure?. The requirement is for hard links, not symbolic links -- http://mail.python.org/mailman/listinfo/python-list
Re: Passing array from java to python
Unfortunately using jpython or json are not options at the moment -- http://mail.python.org/mailman/listinfo/python-list
Passing array from java to python
I need to pass some sort of array or hashmap from Java and read the data in a python script (which will be called by the java class). Is there any neater way to do this other than just passing strings? -- http://mail.python.org/mailman/listinfo/python-list
Re: Python 2.6 and timezones
Thanks...but being a python newbie I am struggling to understand how
to do this.
How can I use tzinfo to do the equivalent of what I do in Java, which
is :
TimeZone tz1 = TimeZone.getDefault();
long localOffset = tz1.getOffset(date.getTime());
TimeZone tz2 = TimeZone.getTimeZone("EST");
long remoteOffset = tz2.getOffset(date.getTime());
Any help appreciated
On May 23, 11:48 am, Daniel Kluev wrote:
> On Mon, May 23, 2011 at 9:32 PM, loial wrote:
> > Does python have an equivalent of the java Timezone object?
>
> > I need to be able to get offsets for timezones (only U.S. time zones
> > at the moment)
>
> Depends on what exactly do you want. If you need to convert timezone
> name into current offset, you should use [1] or [2].
> If you just need to handle known offsets for datetime objects, there
> is tzinfo class in datetime module, [3].
>
> [1]http://pypi.python.org/pypi/PosixTimeZone/0.9.4
> [2]http://pypi.python.org/pypi/pytz/2011g
> [3]http://docs.python.org/library/datetime.html#tzinfo-objects
>
> --
> With best regards,
> Daniel Kluev
--
http://mail.python.org/mailman/listinfo/python-list
Python 2.6 and timezones
Does python have an equivalent of the java Timezone object? I need to be able to get offsets for timezones (only U.S. time zones at the moment) -- http://mail.python.org/mailman/listinfo/python-list
Spurious character in IOError exception
When I correctly trap an IOError a spurious u' appears in the file path in the exception message : The path used in the code is correct i.e. /home/myfile But the error message says : [Errno 2] No such file or directory: u'/home/myfile' I am simply doing except IOError, e: print str(e) Any ideas where the 'u is coming from? This is python 2.4.1 -- http://mail.python.org/mailman/listinfo/python-list
Re: PJL
Thank you. I was able to send the following PJL to the printer and it worked. @PJL STMSG DISPLAY = "Hello from John" Do you have any experience handling PJL responses from the printer?...What I really want to do is get PJL information back from the printer and read it in python(or some other Unix scripting tool) -- http://mail.python.org/mailman/listinfo/python-list
Re: PJL
Thanks for responding.. First question...how do I send it to the printer? Printer would be on the network. -- http://mail.python.org/mailman/listinfo/python-list
PJL
Anyone got any experience of send PJL commands to a printer using Python on Unix? -- http://mail.python.org/mailman/listinfo/python-list
Oracle jdbc sql select for update in python
I want to do a select from...for update in python, update the selected row and then commit; However cannot seem to get it to work...the update statement seems to be waiting because the row is locked. Presumably oracle thinks the update is another transaction. How can I get this to work? What statements do I need to ensure Oracle treats this as one transaction? -- http://mail.python.org/mailman/listinfo/python-list
Scheduling in python
I want to enable my end users to be able to schedule a task(actually running another python or shell script). Rather than scheduling it directly in cron, are there any python modules I could use? -- http://mail.python.org/mailman/listinfo/python-list
Re: How to read large amounts of output via popen
Ok, thats great. Thanks for the very elegant solution(s)
On 6 Aug, 13:44, Nobody wrote:
> On Fri, 06 Aug 2010 02:06:29 -0700, loial wrote:
> > I need to read a large amount of data that is being returned in
> > standard output by a shell script I am calling.
>
> > (I think the script should really be writing to a file but I have no
> > control over that)
>
> If the script is writing to stdout, you get to decide whether its stdout
> is a pipe, file, tty, etc.
>
> > Currently I have the following code. It seeems to work, however I
> > suspect this may not work with large amounts of standard output.
> > process=subprocess.Popen(['myscript', 'param1'],
> > shell=False,stdout=subprocess.PIPE,stderr=subprocess.PIPE)
>
> > cmdoutput=process.communicate()
>
> It's certainly not the best way to read large amounts of output.
> Unfortunately, better solutions get complicated when you need to read more
> than one of stdout and stderr, or if you also need to write to stdin.
>
> If you only need stdout, you can just read from process.stdout in a loop.
> You can leave stderr going to wherever the script's stderr goes (e.g. the
> terminal), or redirect it to a file.
>
> If you really do need both stdout and stderr, then you either need to
> enable non-blocking I/O, or use a separate thread for each stream, or
> redirect at least one of them to a file.
>
> FWIW, Popen.communicate() uses non-blocking I/O on Unix and separate
> threads on Windows (the standard library doesn't include a mechanism to
> enable non-blocking I/O on Windows).
>
> > What is the best way to read a large amount of data from standard
> > output and write to a file?
>
> For this case, the best way is to just redirect stdout to a file, rather
> than passing it through the script, i.e.:
>
> outfile = open('outputfile', 'w')
> process = subprocess.call(..., stdout = outfile)
> outfile.close()
--
http://mail.python.org/mailman/listinfo/python-list
How to read large amounts of output via popen
I need to read a large amount of data that is being returned in
standard output by a shell script I am calling.
(I think the script should really be writing to a file but I have no
control over that)
Currently I have the following code. It seeems to work, however I
suspect this may not work with large amounts of standard output.
What is the best way to read a large amount of data from standard
output and write to a file?
Here is my code.
process=subprocess.Popen(['myscript', 'param1'],
shell=False,stdout=subprocess.PIPE,stderr=subprocess.PIPE)
cmdoutput=process.communicate()
myfile = open('/home/john/myoutputfile','w')
myfile.write(cmdoutput[0])
myfile.close()
--
http://mail.python.org/mailman/listinfo/python-list
Re: lpr via subprocess in 2.4
Thanks...that worked. I have also been trying to get the return code and standard error. How do I access these? #!/usr/bin/python import os import subprocess process=subprocess.Popen(['lpr', '-P' ,'raserlpr','/etc/hosts'], shell=False, stdout=subprocess.PIPE, stderr=subprocess.PIPE) print process.communicate() On 4 Aug, 12:08, Peter Otten <__pete...@web.de> wrote: > loial wrote: > > I am am trying to run the following command via subprocess > > > lpr -P printqueue filetoprint > > > I cannot seem to get it to work and return stderr > > > I think the issue is how to specify the arguments > > > I am trying > > > subprocess.Popen(['lpr -P' ,'laserlpr','/etc/hosts'], shell=False) > > This looks for an executable called "lpr -P"; try > > subprocess.Popen(['lpr', '-P' ,'laserlpr','/etc/hosts'], shell=False) > > > > > but get error : > > > Traceback (most recent call last): > > File "testopen.py", line 6, in ? > > subprocess.Popen(['lpr -P' ,'laserlpr','/etc/hosts'], shell=False) > > File "/usr/python2.4/lib/python2.4/subprocess.py", line 558, in __in > > it__ > > errread, errwrite) > > File "/usr/python2.4/lib/python2.4/subprocess.py", line 991, in _exe > > cute_child > > raise child_exception > > OSError: [Errno 2] No such file or directory- Hide quoted text - > > - Show quoted text - -- http://mail.python.org/mailman/listinfo/python-list
lpr via subprocess in 2.4
I am am trying to run the following command via subprocess lpr -P printqueue filetoprint I cannot seem to get it to work and return stderr I think the issue is how to specify the arguments I am trying subprocess.Popen(['lpr -P' ,'laserlpr','/etc/hosts'], shell=False) but get error : Traceback (most recent call last): File "testopen.py", line 6, in ? subprocess.Popen(['lpr -P' ,'laserlpr','/etc/hosts'], shell=False) File "/usr/python2.4/lib/python2.4/subprocess.py", line 558, in __in it__ errread, errwrite) File "/usr/python2.4/lib/python2.4/subprocess.py", line 991, in _exe cute_child raise child_exception OSError: [Errno 2] No such file or directory -- http://mail.python.org/mailman/listinfo/python-list
Re: Get name of file from directory into variable
On 3 Aug, 11:31, Alex Willmer wrote:
> On Aug 3, 11:21 am, loial wrote:
>
> > In a unix shell script I can do something like this to look in a
> > directory and get the name of a file or files into a variable :
>
> > MYFILE=`ls /home/mydir/JOHN*.xml`
>
> > Can I do this in one line in python?
>
> Depends if you count imports.
>
> import glob
> my_files = glob.glob('/home/mydir/JOHN*.xml')
>
> Regards, Alex
Cheers
--
http://mail.python.org/mailman/listinfo/python-list
Get name of file from directory into variable
In a unix shell script I can do something like this to look in a directory and get the name of a file or files into a variable : MYFILE=`ls /home/mydir/JOHN*.xml` Can I do this in one line in python? -- http://mail.python.org/mailman/listinfo/python-list
Kick off a delete command from python and not wait
I have a requirement to kick off a shell script from a python script without waiting for it to complete. I am not bothered about any return code from the script. What is the easiest way to do this. I have looked at popen but cannot see how to do it. -- http://mail.python.org/mailman/listinfo/python-list
How to print via python on windows
What is the easiest way to send a text file to a networked printer from a python script running on windows? -- http://mail.python.org/mailman/listinfo/python-list
Parse xml file
Is there a quick way to retrieve data from an xml file in python 2.4, rather than read the whole file? -- http://mail.python.org/mailman/listinfo/python-list
Using optparse
A shell script is passing parameters to my python script in the following format -PARAM1 12345 -PARAM2 67890 Can I parse these with optparse ? If so how? I can't seem to get it to work. It seems to expect --PARAM1 and -- PARAM2 -- http://mail.python.org/mailman/listinfo/python-list
Get file name from file handle
Is there anyway, having been passed a file handle, to get the filename? I am assuming not, but thought I would ask -- http://mail.python.org/mailman/listinfo/python-list
replace ftp by local copy
I have been given an old python application that calls ftplib in many places to copy files to a remote server. I have been given the task of cloneing this code so that ftp is not used, but files are just copied locally in a scenerio where ftp is not available. The code is not well structured which makes this more difficult. Before starting this just wondered if anyone has previously done anything like overriding the ftplib module so that I can leave the existing code largely unchanged but have the ftp commands just copy files locally? Just thought I'd ask before getting started. -- http://mail.python.org/mailman/listinfo/python-list
Re: Using paramiko rsa key
On 10 Feb, 17:08, "Martin P. Hellwig" wrote: > loial wrote: > > Can anyone be a little more helpful than Tino? > > > I'll do some freebie hints :-) > What I would do is try first whether key authentication works at all, > for example following a tutorial > likehttp://the.earth.li/~sgtatham/putty/0.53b/htmldoc/Chapter8.html > > And if that works translate it to the relevant python code. > > -- > mph Thanks..I'll try that first -- http://mail.python.org/mailman/listinfo/python-list
Re: Using paramiko rsa key
Can anyone be a little more helpful than Tino?
I have generated the key file as follows on windows and ftp'd the
id_rsa.pub file to the .ssh directory on the server and renamed to
authorized_keys
import paramiko
key = paramiko.RSAKey.generate(2048)
key.write_private_key_file('Z:/id_rsa')
file = open('Z:/id_rsa.pub','w')
file.write("ssh-rsa " +key.get_base64())
file.close()
But when I try to connect as follows I get an authentication failed
error.
import paramiko
paramiko.util.log_to_file('demo_sftp.log')
try:
try:
key = paramiko.RSAKey.from_private_key_file("Z:/id_rsa") #the
generated private key
except Exception, e:
print str(e)
t = paramiko.Transport(('10.5.1.15', 22))
print "here"
t.start_client()
t.auth_publickey('prod2',key)
if t.is_authenticated():
print "Got it!"
sftp = paramiko.SFTPClient.from_transport(t)
dirlist = sftp.listdir('.')
print "Dirlist:", dirlist
t.close()
except Exception, e:
print str(e)
t.close()
--
http://mail.python.org/mailman/listinfo/python-list
Using paramiko rsa key
I want to connect via ssh from a python script on windows to an AIX server running openSSH using rsa keys rather than a password. Can anyone provide me with /point me at a simple tutuorial on the steps I need to go though in terms of geneerating the key, installing on the server and connecting in my python code? Thanks in advance. -- http://mail.python.org/mailman/listinfo/python-list
python ssh and Tetia SSH server
Anyone out there any experience of using python ssh modules to connect to the Tetia SSH server from SSH (ssh.com)? -- http://mail.python.org/mailman/listinfo/python-list
Python ssh with SSH Tectia server
Has anyone any experiencing with ssh between a python client and the SSH Tectia server from SSH (ssh.com) ? Does it work? -- http://mail.python.org/mailman/listinfo/python-list
Web services
I am trying to learn about web services and how to interface with a 3rd party web service from python. Can anyone point me at an idiots guide/tutorial for someone who is new to web services? -- http://mail.python.org/mailman/listinfo/python-list
Re: sftp with no password from python
On 8 Jan, 18:49, Mike Hjorleifsson wrote: > On Jan 8, 10:39 am, loial wrote: > > > Is it possible to usesftpwithout a password from python? > > Yes you can use keys you preestablish between the server and client so > you dont need passwords, i do this on all my servers then lock off the > ability to accept passwords at all, this way no one can dictionary > attack my ssh servers. Thanks...do you have any python examples of using sftp? -- http://mail.python.org/mailman/listinfo/python-list
sftp with no password from python
Is it possible to use sftp without a password from python? -- http://mail.python.org/mailman/listinfo/python-list
Re: ssh keepalive
<> def command ( self , command ) : """ process requested command through ssh """ print command if not self._connected : return False , "No SSH connection available" try : stdin , stdout , stderr = self._ssh.exec_command( command ) remoteStdOutContent = stdout.readlines() remoteStdErrContent = stderr.readlines() if remoteStdErrContent != [] : return False , '\n'.join(remoteStdErrContent) return True , '\n'.join(remoteStdOutContent) except paramiko.SSHException , e : # provide socket error reason back return False , str(e) -- http://mail.python.org/mailman/listinfo/python-list
ssh keepalive
I have a problem with a ssh connection in python I get the error 'NoneType' object has no attribute 'exec_command' I am thinking that maybe the ssh connection is timeing out. Since I have no control over the configuration of the ssh server(which is AIX 5.23), is there anything I can do in python to ensure that the ssh session does not timeout? -- http://mail.python.org/mailman/listinfo/python-list
Re: Question re ConfigParser
On 20 Aug, 13:49, alex23 <[EMAIL PROTECTED]> wrote: > On Aug 20, 5:34 pm, loial <[EMAIL PROTECTED]> wrote: > > > Given a section like > > > [Data] > > value1 > > value2 > > value3 > > > Can ConfigParser be easily used to put the values in a dictionary? If > > so, how? > > Dictionaries are key/value pairs. Do you expect 'value1' to be a key > or a value? > > If the data is literally as you describe, and not key/value entries > (such as 'key1: value1' or 'key1=value1'), you would probably be > better off just stepping through the file, testing for the [data] > section and then reading the following lines into a list. Thanks. Thats what I did in the end -- http://mail.python.org/mailman/listinfo/python-list
Question re ConfigParser
Given a section like [Data] value1 value2 value3 Can ConfigParser be easily used to put the values in a dictionary? If so, how? -- http://mail.python.org/mailman/listinfo/python-list
Compare 2 files and discard common lines
I have a requirement to compare 2 text files and write to a 3rd file only those lines that appear in the 2nd file but not in the 1st file. Rather than re-invent the wheel I am wondering if anyone has written anything already? -- http://mail.python.org/mailman/listinfo/python-list
Delete hidden files on unix
How can I delete hidden files on unix with python, i.e I want to do equivalent of rm .lock* -- http://mail.python.org/mailman/listinfo/python-list
ftplib.nlst gives error on empty directory
Trying to use ftplib.FTP.nlst() method to list the files in a directory on a FTP server. It works fine except when there are no files in the directory. Then it gives the error ftplib.error_perm: 550 No files found. How can I handle this cleanly? -- http://mail.python.org/mailman/listinfo/python-list
PYTHONPATH and PYTHON_PATH
Is there any difference? Does it matter which I use? -- http://mail.python.org/mailman/listinfo/python-list
Python thinks file is empty
I am writing a file in python with writelines
f = open('/home/john/myfile',"w")
f.writelines("line1\n")
f.writelines("line2\n")
f.close()
But whenever I try to do anything with the file in python it finds no
data. I am trying ftp, copying the file...the resultant file is always
0 bytes, although if I look at the original file on the unix command
line, its fine
e.g.
shutil.copyfile('/home/john/myfile', '/home/john/myfile2')
Any ideas what the problem is?
--
http://mail.python.org/mailman/listinfo/python-list
variable naming query
I'ma a newbie python user and would like clarification on variable naming conventions. What is the difference between self.myvariable self._myvariable self.__myvariable and when should I use each of them? -- http://mail.python.org/mailman/listinfo/python-list
How to check if file is in use?
Is there anyway in pythn to check whether a file is being used/written to by another process, e.g like the fuser command? -- http://mail.python.org/mailman/listinfo/python-list
install paramiko on AIX (ActiveState)
I need help installing paramiko on ActiveState python on AIX 5 I am new to python so need info on how to download and install paramiko AIX box does not have internet connection so presume cannot use ez_setup.py? Can anyone help? -- http://mail.python.org/mailman/listinfo/python-list
Re: Store variable name in another variable
OK, I have it working with dictionaries. However I have another scenerio : I am reading a file containing records like the following : .. .. I need to substitute MYVARIABLE with the current value of MYVARIABLE in my python script and write the file out again. The file may contain many more lines and many substitution values on any line Assuming that MYVARIABLE is currently set to JOHN then the output would be Can this be done in Python? Amending the way the variable names are distinguished in the incoming file is possible if that would help. On 26 Apr, 22:02, Laurent Pointal <[EMAIL PROTECTED]> wrote: > Cameron Laird wrote: > > In article <[EMAIL PROTECTED]>, > > Laurent Pointal <[EMAIL PROTECTED]> wrote: > >>loial a ?it : > >>> I need to store a list ofvariablenames in a dictionary or list. I > >>> then later need to retrieve the names of the variables and get the > >>> values from the named variables. The named variables will already have > >>> been created and given a value. > > >>"Named variables will already have been created"... in what namespace ? > > >>Store a list of names -> dict/list (see tutorial) > > >>Then, > >>use namespace.name > >>or getattr(namespace,"name") > >>or locals()["name"] > >>or globals()["name"] > > > admin, I want to be sure you understand the advice you've been given. > > Yes, it is possible to "double dereference" through named variables; > > HOWEVER, it is essentially *never* advantageous to do so in application > > programming with Python (nor is it in Perl and PHP, despite what many > > senior people there teach). Use a dictionary, perhaps one with > > multi-dimensional keys. > > Yes, I understand. I just reply to OP question not searching the reason why > he wants to manage *variables* this way (he talk about dict, so I hope he > know that they can be used to map names to values). > So, this is not an advice, just technical ways related to the question as it > was written. > > And yes, personnally i use dictionnaries for such purpose. > > A+ > > Laurent.- Hide quoted text - > > - Show quoted text - -- http://mail.python.org/mailman/listinfo/python-list
Problems with time
I am running on an AIX system with time zone set to BST
If I run the following, I get the GMT time, i.e an hour less than the
correct time.
How can I get the correct time
now = time()
timeProcessed = strftime("%H:%M",gmtime(now))
--
http://mail.python.org/mailman/listinfo/python-list
Store variable name in another variable
I need to store a list of variable names in a dictionary or list. I then later need to retrieve the names of the variables and get the values from the named variables. The named variables will already have been created and given a value. I hope thats clear!!! How can I do this? -- http://mail.python.org/mailman/listinfo/python-list
Problems with os.rename
I am having problems with os.rename on AIX The source file definately exists and the target file does not. However the rename always generates an OSerror exception. I can do the rename via a mv statement at the AIX command line with no problem. How can I get more info what the cause of the OSError exception is? N.B. The source file is created by a process run via subprocess e.g. from subprocess import Popen, PIPE, STDOUT p = Popen(self.command, stdout=PIPE, stderr=STDOUT, shell=True) return p.wait() Could this be the issue? -- http://mail.python.org/mailman/listinfo/python-list
Handling sorted dictionaries
The following code gives the error
d=sortedmachines[machine]
TypeError: list indices must be integers
What works for the unsorted dictionary does not work for the sorted
dictionary.
Can anyone help?
machinekey = "11"
machines = {}
machines[machinekey]=[1,0,0,0,0,0,0,0,0,0,0,0,0]
machinekey = "22"
machines[machinekey]=[0,1,0,0,0,0,0,0,0,0,0,0,0]
ddd=0
for machine in machines.keys():
d=machines[machine]
print machine
print d [ddd]
sortedmachines=sorted(machines)
for machine in sortedmachines:
d=sortedmachines[machine]
print machine
print d [ddd]
--
http://mail.python.org/mailman/listinfo/python-list
Re: More newbie help required with dictionaries
machines[machinekey] = [0,1,0,0,0,0,0,0,0,0,0,0,0]
is what I needed...thanks
On 16 Apr, 15:07, Christoph Haas <[EMAIL PROTECTED]> wrote:
> On Mon, Apr 16, 2007 at 06:43:37AM -0700, loial wrote:
> > The following code only returns the last row(22) added to the
> > machines dictionary.
> > presumably I need some additional syntax to add rows to the dictionary
> > rather than overwrite.
>
> > What do I need to add?
>
> > machinekey = "11"
>
> > machines = { machinekey:[1,0,0,0,0,0,0,0,0,0,0,0,0] }
>
> > machinekey = "22"
>
> > machines = { machinekey:[0,1,0,0,0,0,0,0,0,0,0,0,0] }
>
> You redefine the "machines" dictionary here. So it just contains one
> entry. What you mean:
>
> machines.update({ machinekey:[0,1,0,0,0,0,0,0,0,0,0,0,0] })
>
> Or:
>
> machines[machinekey] = [0,1,0,0,0,0,0,0,0,0,0,0,0]
>
> Christoph
--
http://mail.python.org/mailman/listinfo/python-list
More newbie help required with dictionaries
The following code only returns the last row(22) added to the
machines dictionary.
presumably I need some additional syntax to add rows to the dictionary
rather than overwrite.
What do I need to add?
machinekey = "11"
machines = { machinekey:[1,0,0,0,0,0,0,0,0,0,0,0,0] }
machinekey = "22"
machines = { machinekey:[0,1,0,0,0,0,0,0,0,0,0,0,0] }
for machine in machines.keys():
print machine
--
http://mail.python.org/mailman/listinfo/python-list
Re: Newbie help with array handling
OK, thanks for the replies One other thing...I need to update the values since they are basically totals that I am accumulating. How do I update a specific value for a specific key? -- http://mail.python.org/mailman/listinfo/python-list
