Develop Reference

How to change username of job in print queue using python & win32print

I am trying to change the user of a print job in the queue, as I want to create it on a service account but send the job to another users follow-me printing queue. I'm using the win32 module in python. Here is an example of my code:
from win32 import win32print
JOB_INFO_LEVEL = 2
pclExample = open("sample.pcl")
printer_name = win32print.GetDefaultPrinter()
hPrinter = win32print.OpenPrinter(printer_name)
try:
jobID = win32print.StartDocPrinter(hPrinter, 1, ("PCL Data test", None, "RAW"))
# Here we try to change the user by extracting the job and then setting it again
jobInfoDict = win32print.GetJob(hPrinter, jobID , JOB_INFO_LEVEL )
jobInfoDict["pUserName"] = "exampleUser"
win32print.SetJob(hPrinter, jobID , JOB_INFO_LEVEL , jobInfoDict , win32print.JOB_CONTROL_RESUME )
try:
win32print.StartPagePrinter(hPrinter)
win32print.WritePrinter(hPrinter, pclExample)
win32print.EndPagePrinter(hPrinter)
finally:
win32print.EndDocPrinter(hPrinter)
finally:
win32print.ClosePrinter(hPrinter)
The problem is I get an error at the win32print.SetJob() line. If JOB_INFO_LEVEL is set to 1, then I get the following error:
(1804, 'SetJob', 'The specified datatype is invalid.')
This is a known bug to do with how the C++ works in the background (Issue here).
If JOB_INFO_LEVEL is set to 2, then I get the following error:
(1798, 'SetJob', 'The print processor is unknown.')
However, this is the processor that came from win32print.GetJob(). Without trying to change the user this prints fine, so I'm not sure what is wrong.
Any help would be hugely appreciated! :)
EDIT:
Using Python 3.8.5 and Pywin32 303

At the beginning I thought it was a misunderstanding (I was also a bit skeptical about the bug report), mainly because of the following paragraph (which apparently seems to be wrong) from [MS.Docs]: SetJob function (emphasis is mine):
The following members of a JOB_INFO_1, JOB_INFO_2, or JOB_INFO_4 structure are ignored on a call to SetJob: JobId, pPrinterName, pMachineName, pUserName, pDrivername, Size, Submitted, Time, and TotalPages.
But I did some tests and ran into the problem. The problem is as described in the bug: filling JOB_INFO_* string members (which are LPTSTRs) with char* data.
Submitted [GitHub]: mhammond/pywin32 - Fix: win32print.SetJob sending ANSI to UNICODE API (and none of the 2 errors pops up). It was merged to main on 220331.
When testing the fix, I was able to change various properties of an existing job, I was amazed that it didn't have to be valid data (like below), I'm a bit curious to see what would happen when the job would be executed (as now I don't have a connection to a printer):
Change pUserName to str(random.randint(0, 10000)) to make sure it changes on each script run (PrintScreens taken separately and assembled in Paint):
Ways to go further:
Wait for a new PyWin32 version (containing this fix) to be released. This is the recommended approach, but it will also take more time (and it's unclear when it will happen)
Get the sources, either:
from main
from b303 (last stable branch), and apply the (above) patch(1)
build the module (.pyd) and copy it in the PyWin32's site-packages directory on your Python installation(s). Faster, but it requires some deeper knowledge, and maintenance might become a nightmare
Footnotes
#1: Check [SO]: Run / Debug a Django application's UnitTests from the mouse right click context menu in PyCharm Community Edition? (#CristiFati's answer) (Patching UTRunner section) for how to apply patches (on Win).

Converting Intersystems cache objectscript into a python function

I am accessing an Intersystems cache 2017.1.xx instance through a python process to get various attributes about the database in able to monitor the database.
One of the items I want to monitor is license usage. I wrote a objectscript script in a Terminal window to access license usage by user:
s Rset=##class(%ResultSet).%New("%SYSTEM.License.UserListAll")
s r=Rset.Execute()
s ncol=Rset.GetColumnCount()
While (Rset.Next()) {f i=1:1:ncol w !,Rset.GetData(i)}
But, I have been unable to determine how to convert this script into a Python equivalent. I am using the intersys.pythonbind3 import for connecting and accessing the cache instance. I have been able to create python functions that accessing most everything else in the instance but this one piece of data I can not figure out how to translate it to Python (3.7).

Following should work (based on the documentation):
query = intersys.pythonbind.query(database)
query.prepare_class("%SYSTEM.License","UserListAll")
query.execute();
# Fetch each row in the result set, and print the
# name and value of each column in a row:
while 1:
cols = query.fetch([None])
if len(cols) == 0: break
print str(cols[0])
Also, notice that InterSystems IRIS -- successor to the Caché now has Python as an embedded language. See more in the docs

Since the noted query "UserListAll" is not defined correctly in the library; not SqlProc. So to resolve this issue would require a ObjectScript with the query and the use of #Result set or similar in Python to get the results. So I am marking this as resolved.

Not sure which Python interface you're using for Cache/IRIS, but this Open Source 3rd party one is worth investigating for the kind of things you're trying to do:
https://github.com/chrisemunt/mg_python

How to run the Calculate Field using ArcPy?

I have an issue in executing the Calculate field command in Python (ArcPy). I couldn't find any related resources or helpful descriptions regarding this. I hope somebody could help me with this.
inFeatures = r"H:\Python Projects\PycharmProjects\ArcPy\Test_Output\Trial_out.gdb\Trail_Data_A.shp"
arcpy.CalculateField_management(inFeatures, 'ObjArt_Ken', '!AttArt_Ken!'.split('_')[0])
arcpy.CalculateField_management(inFeatures, 'Wert', '!AttArt_Ken!'.split('_')[-1])
The error i am getting when I run the command is
arcgisscripting.ExecuteError: Error during execution. Parameters are invalid.
ERROR 000989: The CalculateField tool cannot use VB expressions for services.
Error while executing (CalculateField).
I am using ArcGIS Pro 2.8 and Python 2.7

I found a working output for the above mentioned question
inTable = r'H:\Python Projects\PycharmProjects\ArcPy\Test_Output\Trial_out.gdb\Trail_Data_A.shp'
func_1 = "'!AttArt_Ken!'.split('_')[0]"
field_1 = "ObjArt_Ken"
func_2 = "'!AttArt_Ken!'.split('_')[1]"
field_2 = "Wert"
arcpy.AddField_management(inTable, field_1, "TEXT".encode('utf-8'))
arcpy.CalculateField_management(inTable, field_1, func_1, "PYTHON_9.3")
arcpy.AddField_management(inTable, field_2, "TEXT".encode('utf-8'))
arcpy.CalculateField_management(inTable, field_2, func_2, "PYTHON_9.3")
But a problem still exists such that the output (After split function) is like
|ObjArt_Ken|Wert|
|:---|:---|
|u"31001|1001"|
I still couldn't figure out a way to remove the unicode or the '"' symbol from the desired output

Since I can't comment yet, I will have to use an Answer to make several comments
You need to clarify, "I am using ArcGIS Pro 2.8 and Python 2.7." ArcGIS Pro has always come bundled with Python 3.x, and ArcGIS Desktop/ArcMap has always been bundled with Python 2.x. It is not possible to use ArcGIS Pro and Python 2.7. Given the error message, it appears you are running some version of ArcMap and Python 2.7.
The original error message, as you seemed to have figured out, was telling you exactly what wasn't working originally. Since you didn't pass expression_type to Calculate Field and you are using some version of ArcMap that defaults to VB, the function was interpreting your expression as VB code and erring because "CalculateField tool cannot use VB expressions for services."
Looking at the newer code, I am not sure why you are encoding field_type. Although I tested it and it works, it is unnecessary and confusing to someone looking at the code.
Unless you provide some samples of what the AttArt_Ken field contains, people can't really comment on the output you are seeing.

bingads V13 report request fails in python sdk

I try to download a bingads report using python SDK, but I keep getting an error says: "Type not found: 'Aggregation'" after submitting a report request. I've tried all 4 options mentioned in the following link:
https://github.com/BingAds/BingAds-Python-SDK/blob/master/examples/v13/report_requests.py
Authentication process prior to request works just fine.
I execute the following:
report_request = get_report_request(authorization_data.account_id)
reporting_download_parameters = ReportingDownloadParameters(
report_request=report_request,
result_file_directory=FILE_DIRECTORY,
result_file_name=RESULT_FILE_NAME,
overwrite_result_file=True, # Set this value true if you want to overwrite the same file.
timeout_in_milliseconds=TIMEOUT_IN_MILLISECONDS
)
output_status_message("-----\nAwaiting download_report...")
download_report(reporting_download_parameters)
after a careful debugging, it seems that the program fails when trying to execute a command within "reporting_service_manager.py". Here is workflow:
download_report(self, download_parameters):
report_file_path = self.download_file(download_parameters)
then:
download_file(self, download_parameters):
operation = self.submit_download(download_parameters.report_request)
then:
submit_download(self, report_request):
self.normalize_request(report_request)
response = self.service_client.SubmitGenerateReport(report_request)
SubmitGenerateReport starts a sequence of events ending with a call to "_SeviceCall.init" function within "service_client.py", returning an exception "Type not found: 'Aggregation'"
try:
response = self.service_client.soap_client.service.__getattr__(self.name)(*args, **kwargs)
return response
except Exception as ex:
if need_to_refresh_token is False \
and self.service_client.refresh_oauth_tokens_automatically \
and self.service_client._is_expired_token_exception(ex):
need_to_refresh_token = True
else:
raise ex
Can anyone shed some light? .
Thanks

Please be sure to set Aggregation e.g., as shown here.
aggregation = 'Daily'
If the report type does not use aggregation, you can set Aggregation=None.
Does this help?

This may be a bit late 2 months after the fact but maybe this will help someone else. I had the same error (though I suppose it may not be the same issue). It does look like you did what I did (and I'm sure others will as well): copy-paste the Microsoft example code and tried to run it only to find that it didn't work.
I spent quite some time trying to debug the issue and it looked to me like the XML wasn't being searched correctly. I was using suds-py3 for the script at the time so I tried suds-community and everything just worked after that.
I also re-read the Bing Ads API walkthrough for getting started again and found that they recommend suds-jurko instead.
Long story short: If you want to use the bingads API don't use suds-py3, use either suds-community (which I can confirm works for everything I've used the API for) or suds-jurko (which is the one recommended by Microsoft).

Heavily confused by win32api + COM and an answer from SO

From my other question here on SO, I asked how to retrieve the current playing song from Windows Media Player and Zune, I got an answer from a c++ dev who gave me an explanation of how I would do this for WMP.
However, I am no C++ dev, nor am I very experienced with the pywin32 library. And on-top of all that, the documentation on all this (especially concerning WMP) is horrible.
Therefor, I need your help understanding how I would do the following in Python.
Source
I have working code in C++ to print the name of media currently
playing in WMP. It's a simple console application (78 lines of code).
Steps:
1) implements a basic COM object implementing IUnknown, IOleClientSite, IServiceProvider and IWMPRemoteMediaServices. This is
straightforward (sort of, your mileage may vary) using the ATL
template CComObjectRootEx. The only methods needing (simple) code are
IServiceProvider::QueryService and
IWMPRemoteMediaServices::GetServiceType. All other methods may return
E_NOTIMPL
2) Instantiate the "WMPlayer.OCX" COM object (in my case, via CoCreateInstance)
3) Retrieve from the object an IOleObject interface pointer via QueryInterface
4) Instanciate an object from the class seen in 1) (I use the CComObject<>::CreateInstance template)
5) Use the SetClientSite method from the interface you got at 3), passing a pointer to your OleClientSite implementation.
6) During the SetClientSite call, WMP will callback you: fisrt asking for an IServiceProvider interface pointer, second calling the
QueryService method, asking for an IWMPRemoteMediaServices interface
pointer. Return your implementation of IWMPRemoteMediaServices and,
third, you will be called again via GetServiceType. You must then
return "Remote". You are now connected to the WMP running instance
7) Query the COM object for an IWMPMedia interface pointer
8) If 7) didn't gave NULL, read the the IWMPMedia::name property.
9) DONE
All the above was tested with VS2010 / Windows Seven, and with WMP
running (if there is no Media Player process running, just do
nothing).
I don't know if yoy can/want to implement COM interface and object in
Python. If you are interested by my C++ code, let me know. You could
use that code in a C++ DLL, and then call it from python.
I know a little bit about the win32api.
At the first step, I really don't know what to do, googling IOleClientSite results in the msdn documentation, it's an interface. However, that's where I get stuck already. I can't find anything (might just be my horrendous googling skills) on working with these things in Python.
The second step:
WMP = win32com.client.Dispatch("WMPlayer.OCX")
Alright, that's doable.
On to the third step. QueryInterface -
"regardless of the object you have, you can always call its QueryInterface() method to obtain a new interface, such as IStream."
source
However, not for me. As I understand his explanation, I think it means that every com object sort of "inherits" three methods from IUnknown, one of which is QueryInterface, however this does not seem the case since calling QueryInterface on my WMP object fails miserably. (Object has no attribute 'QueryInterface')
I could ramble on, but I believe you got the point, I have no idea how to work with this. Can anyone help me out with this one? Preferably with code examples, but resources/documentation is welcome too.

Almost final answser but CAN'T finish.
I seems that pythoncom can't be used to implement custom Interface without the help of a C++ module.
Here is an answser from Mark Hammon (Mon, 13 Jan 2003): How to create COM Servers with IID_IDTExtensibility2 interface
Sorry - you are SOL. To support arbitary interfaces, you need C++
support, in the form of an extension module. There is a new "Univgw"
that may help you out, but I dont know much about this
I am not able to find anything about that "Univgw" thing...
The comtypes python module is intended to resolve the problem, and I found links saying it does, but I can't make it works with my fresh new Python 3.3. It's Python 2.x code. comtypes seems outdated and unmaintained.
Step 1 OK for IOleClientSite and IServiceProvider, KO for IWMPRemoteMediaServices
Step 2, 3, 4 and 5 OK
Step 6, 7 and 8 can't be implemented without IWMPRemoteMediaServices :-(
disclaimer: complete newbie in Python, please don't yell
import pythoncom
import win32com.client as wc
from win32com.axcontrol import axcontrol
import win32com.server as ws
from win32com.server import util
from win32com.server.exception import COMException
import winerror
import pywintypes
# Windows Media Player Custom Interface IWMPRemoteMediaServices
IWMPRemoteMediaServices = pywintypes.IID("{CBB92747-741F-44FE-AB5B-F1A48F3B2A59}")
class OleClientSite:
_public_methods_ = [ 'SaveObject', 'GetMoniker', 'GetContainer', 'ShowObject', 'OnShowWindow', 'RequestNewObjectLayout', 'QueryService' ]
_com_interfaces_ = [ axcontrol.IID_IOleClientSite, pythoncom.IID_IServiceProvider ]
def SaveObject(self):
print("SaveObject")
raise COMException(hresult=winerror.E_NOTIMPL)
def GetMoniker(self, dwAssign, dwWhichMoniker):
print("GetMoniker ")
raise COMException(hresult=winerror.E_NOTIMPL)
def GetContainer(self):
print("GetContainer")
raise COMException(hresult=winerror.E_NOTIMPL)
def ShowObject(self):
print("ShowObject")
raise COMException(hresult=winerror.E_NOTIMPL)
def OnShowWindow(self, fShow):
print("ShowObject" + str(fShow))
raise COMException(hresult=winerror.E_NOTIMPL)
def RequestNewObjectLayout(self):
print("RequestNewObjectLayout")
raise COMException(hresult=winerror.E_NOTIMPL)
def QueryService(self, guidService, riid):
print("QueryService",guidService,riid)
if riid == IWMPRemoteMediaServices:
print("Known Requested IID, but can't implement!")
raise COMException(hresult=winerror.E_NOINTERFACE)
else:
print("Requested IID is not IWMPRemoteMediaServices" )
raise COMException(hresult=winerror.E_NOINTERFACE)
if __name__=='__main__':
wmp = wc.Dispatch("WMPlayer.OCX")
IOO = wmp._oleobj_.QueryInterface(axcontrol.IID_IOleObject)
pyOCS = OleClientSite()
comOCS = ws.util.wrap(pyOCS, axcontrol.IID_IOleClientSite)
IOO.SetClientSite(comOCS)