In my application I have a method for users to convert a report to a PDF document. This works perfectly - once. If the user clicks the button again, the conversion hangs.
This is my code:
def print_report(self):
web = QtWebKit.QWebView()
filename = "reporttemplate.html"
file = open(filename,'r')
html = file.read()
file.close()
web.setHtml(html)
#web.show()
printer = QtGui.QPrinter()
printer.setPageSize(QtGui.QPrinter.Letter)
printer.setOutputFormat(QtGui.QPrinter.PdfFormat)
# ---- BROKEN ----
# This next line is where it hangs on the second call to this function.
# The first time it works, and generates the PDF as expected.
# ---- BROKEN ON THE NEXT LINE! ----
printer.setOutputFileName(r'C:\path\to\report\directory\file.pdf')
def convertIt():
web.print_(printer)
print "Pdf generated"
web.close()
QtCore.QObject.connect(web, QtCore.SIGNAL("loadFinished(bool)"), convertIt)
My thought is that the printer still has the file open. If that's the case, how can I close the file?
It works if I relaunch the application and the file already exists. For that reason, I don't believe it's hanging because the file already exists.
Testing your code I noticed that for me it only works when I put web.setHtml(html) at the end (last statement) in the print_report method. Doing that I was able to generate file.pdf as many times as I wanted to.
Related
I am having an issue getting my try and finally statement to execute properly. I am trying to get another Python file to execute once a user has interacted with the first program.For example, once the first program is run the user will be asked to scan their tag which will create a unique user id for that user; after their tag is scanned a second python file will be executed. My problem is that the second file is constantly being run as soon as the first file is executed regardless if the tag is scanned first or not. I have added my code below with comments to help explain better. Any thoughts?
import RPi.GPIO as GPIO
from mfrc522 import SimpleMFRC522
# Second File being ran
import medform
reader = SimpleMFRC522()
try:
# user id being created
c = string.ascii_letters + string.digits
op = "".join(choice(c) for x in range(randint(8,16)))
# Printed before tag is scanned
print("Please Scan tag " )
reader.write(op + op)
# if tag is scanned / id created open second file
if reader.write(op + op):
os.system('python medform.py')
else:
print("Scan Tag First" )
# Print after tag is scanned
print("Scan Complete")
finally:
GPIO.cleanup()
importing a file runs it, there are 2 ways to do what you want:
import the file when you want it to run
define a main function in the other file that you can run from the first one instead of having all the code in the top level
the second option is the best one in most cases, as you normally would not want a file to actually do stuff on import.
so in the second file you would have:
def main():
# the code you want to run (make sure to indent it)
then in the first you can have:
import medform
# ...
medform.main()
I've written a short code to download and rename files from a specific folder in my outlook account. The code works great, the only problem is that I typically need to run the code several times to actually download all of the messages. It seems the code is just failing to acknowledge some of the messages, there are no errors when I run through it.
I've tried a few things like walking through each line step by step in the python window, running the code with outlook closed or opened, and trying to print the files after they're successfully saved to see if there are specific messages that are causing the problem.
Here's my code
#! python3
# downloadAttachments.py - Downloads all of the weight tickets from Bucky
# Currently saves to desktop due to instability of I: drive connection
import win32com.client, os, re
#This line opens the outlook application
outlook = win32com.client.Dispatch("Outlook.Application").GetNamespace("MAPI")
#Not exactly sure why the inbox is default folder 6 but it works
inbox = outlook.GetDefaultFolder(6)
#box where the messages are to save
TicketSave = inbox.Folders('WDE').Folders('SAVE').Folders('TicketSave')
#box where the messages are moved to
done = inbox.Folders('WDE').Folders('CHES').Folders('Weight Tickets')
ticketMessages = TicketSave.Items
#Key is used to verify the subject line is correct. This script only works if the person sends
# their emails with a consistent subject line (can be altered for other cases)
key = re.compile(r'wde load \d{3}') #requires regulars expressions (i.e. 'import re')
for message in ticketMessages:
#will skip any message that does not match the correct subject line format (non-case sensitive)
check = str(message.Subject).lower()
if key.search(check) == None:
continue
attachments = message.Attachments
tic = attachments.item(1)
ticnum = str(message.Subject).split()[2]
name = str(tic).split()[0] + ' ticket ' + ticnum + '.pdf' #changes the filename
tic.SaveAsFile('C:\\Users\\bhalvorson\\Desktop\\Attachments' + os.sep + str(name))
if message.UnRead == True:
message.UnRead = False
message.Move(done)
print('Ticket pdf: ' + name + ' save successfully')
Alright I found the answer to my own question. I'll post it here in case any other youngster runs into the same problem as me.
The main problem is the "message.Move(done)" second from the bottom.
Apparently the move function alters the current folder thus altering the number of loops that the for loop will go through. So, the way it's written above, the code only ever processes half of the items in the folder.
An easy work around is to switch the main line of the for loop to "for message in list(ticketMessages):" the list is not affected by the Move function and therefore you'll be able to loop through every message.
Hope this helps someone.
I've built a script that makes two parallelized process over the same text files, each one saving results into a new text file with a proper file name. One of these process does it well, while another gives error message from question title.
I thought it was because I save results in a buffer and then I write it completely into the file, so I've change this part of code such that each new results line generated would be immediately saved on file, and nonetheless error message still appears, and so I can't get results saved on file.
I'm now testing a new version of script with processes unparalleled, but how could I solve this problem such that I could keep processes parallelized?
Here's the sample code below:
from concurrent.futures import ProcessPoolExecutor, as_completed
def process():
counter_object_results = make_data_processing()
txt_file_name = f'file_name.txt'
with open(txt_file_name, 'a') as txt_file:
for count in counter_object_results.items():
txt_file_content = f'{counter_object_results[0]}\t{counter_object_results[1]}\n'
txt_file.write(txt_file_content)
def process_2():
counter_object_results = make_data_processing()
txt_file_name = f'file_name.txt'
with open(txt_file_name, 'a') as txt_file:
for count in counter_object_results.items():
txt_file_content = f'{counter_object_results[0]}\t{counter_object_results[1]}\n'
txt_file.write(txt_file_content)
with ProcessPoolExecutor() as executor:
worker_a = executor.submit(process)
worker_b = executor.submit(process_2)
futures = [worker_a, worker_b]
for worker in as_completed(futures):
resp = worker.result()
print(f'Results saved on {resp}')
I want to redirect results out to a file without leaving the wsadmin command line.
Jyhton code :
dsid = AdminConfig.getid('/DataSource:IG.JASPER.DS/')
AdminControl.testConnection(dsid)
I find something like below. but I am not sure really Can someone please let me know how to do this?
file = open("C:\\Test\\conn.txt","w")
file.write("Admin.config.... blah")
file.close()
See here for more details.
Open the file with "w" or "w+" file mode for writing to a file object.
When a file opened for write operation you can use the following :
redirecting operator >>
write function
writelines function
So the below script should work for your datasource test connection
dsid = AdminConfig.getid('/DataSource:BPH Oracle XA DataSource')
status = AdminControl.testConnection(dsid)
file=open('results.txt', 'w')
#print >>file, status
#file.write(status)
file.write(AdminControl.testConnection(dsid))
file.close()
For successful connection, the generated file (results.txt) should contain an entry like "WASX7217I: Connection to provided datasource was successful."
My Script downloads a zipfile, exctracts the relevant parts replaced files and folders etc. It used to work flawlessly, for some reason its has now decided to stop working and only partly downloads the zipfile, and of course, as the zipfile is incomplete I get an error, saying the downloaded file is not a zipfile. my script is as follows.
def downloadupdate():
xbmcgui.Dialog().ok(
"[B][COLOR white]Daily Updater[/B][/COLOR]",
"Favourites and some software will now update",
"Elements of your system will be cleaned",
"Daily Update will take at most 2 minutes")
#ONLY HAVE THE SUPER FAVOURITES FOLDER IN THE ZIPFILE!!
url = 'http://x.com/x/x/Super Favourites.zip'
destination = xbmc.translatePath('special://home/userdata/addon_data/iupdatefix/Super Favourites.zip')
favzip = urllib.urlopen(url)
xbmc.executebuiltin("Notification(Downloading new updates, PLEASE WAIT,()")
with open(xbmc.translatePath('special://home/userdata/addon_data/iupdatefix/Super Favourites.zip'), "wb") as zipFile:
zipFile.write(favzip.read())
xbmc.executebuiltin("Notification(Download Complete, Please wait,()")
time.sleep(5)
xbmc.executebuiltin("Notification(Updating Click and Play channels, Please wait,()")
updatezip = xbmc.translatePath('special://home/userdata/addon_data/iupdatefix/Super Favourites.zip')
extractupdate = xbmc.translatePath('special://home/userdata/addon_data/plugin.program.super.favourites/')
oldfav = xbmc.translatePath('special://home/userdata/addon_data/plugin.program.super.favourites/Super Favourites')
yeszip = os.path.exists(updatezip)
time.sleep(5)
if yeszip:
xbmc.executebuiltin("Notification(Removing previous, Please wait,()")
shutil.rmtree(oldfav, ignore_errors=False)
xbmc.executebuiltin("Notification(Updating, now,()")
gh = open(updatezip, 'rb')
zp = zipfile.ZipFile(gh)
zp.extractall(extractupdate)
gh.close()
time.sleep(3)
xbmc.executebuiltin("Notification(updated, Now Checking sd,()")
# put this command at the end of whole script --->>>os.remove(updatezip)
else:
xbmc.executebuiltin("Notification(Update file Corrupt, Please try again,()")
The problem has been solved, It was not the code. It was the hosting service, I had to reset the File permissions on the server and after that all works perfectly again.