Python not wait for sub Function

DavinE

Hello Guys,

I have a problem with my function...
i hope anyone can help my out.

this is my sample code:

def generatePDF(self, data, customer, customer_project, materiallistType):
        Querry = []
        Querry.append(['Herstellerbeschreibung', 'Herstellernummer', 'Lieferantennummer', 'Anzahl', 'Preis', 'Kommentar'])
        Querry.extend(data)
        
        filePath = self.setFileNamePDF(customer, customer_project, materiallistType)
        # while filePath is None:
            # pass
        print("Bin hier FEHLER ???")
        print(filePath)
        sys.exit(1)

my Problem here is that print(filePath) is None....
but i did not understand why...

when i try something like that in an Test.py it works but not here.... does anyone know why ?

cvp

@DavinE said:

You could try with

from objc_util import *
@on_main_thread
def generatePDF(...)

cvp

@DavinE and what is the code of self.setFileNamePDF ?

DavinE

@cvp
this has no effect :(

cvp

@DavinE said:

this has no effect :(

Perhaps something in your self.setFileNamePDF has a callback and you could need to wait it is finished.

DavinE

@cvp
callback ?

in the Function is a return like this:

return os.path.join(os.path.dirname(sys.argv[0]), 'Reportlab', materiallistFilesName)

how can i wait till my function is finished that's my problem i don't know how

DavinE

@cvp said:

@DavinE and what is the code of self.setFileNamePDF ?

this is my complete self.setFileNamePDF:

@ui.in_background
    def setFileNamePDF(self, customer, customer_project, materiallistType):
        self.createLog(False, 'setFileNamePDF -- Aufruf der Funktion - Dateiname für die *.pdf Datei finden', '', 1)
        
        materiallistFilesName = None
        self.Synology_DS718(customer)
        try:
            decontrol = None
            for directory in self.connection_FTP.nlst(self.mainDirCustomer__CONFIG):
                if directory.encode('latin-1').decode('utf-8') == self.subDirCustomer__CUSTOMER:
                    decontrol = True
                    break
            if decontrol:
                subDirCustomer_Materiallisten__CUSTOMER = '%s/%s' % (self.subDirCustomer_Materiallisten, customer_project)
                subDirCustomer_Eintragungen = '%s/%s' % (subDirCustomer_Materiallisten__CUSTOMER, self.subDirCustomer_Eintragungen__CONFIG)
                subDirCustomer_ZwischenRechnung = '%s/%s' % (subDirCustomer_Materiallisten__CUSTOMER, self.subDirCustomer_ZwischenRechnung__CONFIG)
                subDirCustomer_Abgeschlossen = '%s/%s' % (subDirCustomer_Materiallisten__CUSTOMER, self.subDirCustomer_Abgeschlossen__CONFIG)

                if materiallistType == self.subDirCustomer_Eintragungen__CONFIG:
                    materiallistType__Path = subDirCustomer_Eintragungen
                elif materiallistType == self.subDirCustomer_ZwischenRechnung__CONFIG:
                    materiallistType__Path = subDirCustomer_ZwischenRechnung
                elif materiallistType == self.subDirCustomer_Abgeschlossen__CONFIG:
                    materiallistType__Path = subDirCustomer_Abgeschlossen
                else:
                    print(f'[ 7000 ] -- Der Materiallisten Typ konnte nicht ermittelt werden: [ {materiallistType} ]:\n{e}')
                    sound.play_effect(play_sound('play_effect', 'mysql', 'error'))
                    self.createLog(False, '[ 7000 ]', '', 2)
                    self.createLog(False, f'Der Materiallisten Typ konnte nicht ermittelt werden: [ {materiallistType} ]', '', 2)
                    console.alert('ftp-error', 'Der Materiallisten Typ konnte nicht ermittelt werden:\n[ {materiallistType} ]', hide_cancel_button=False)

                if materiallistType == self.subDirCustomer_Abgeschlossen__CONFIG:
                    print("Abfrage drine!!")
                    materiallistFilesName =  f'{date.today()} -- {customer_project}.pdf'
                else:
                    for i, files in enumerate(self.connection_FTP.nlst(materiallistType__Path)):
                        for n in range(1, 51):
                            if os.path.basename(files).encode('latin-1').decode('utf-8') == f'{date.today()}__{n} -- {customer_project}.pdf':
                                materiallistFilesName = f'{date.today()}__{(n + 1)} -- {customer_project}.pdf'
                        if (len(self.connection_FTP.nlst(materiallistType__Path)) - 1) is i:
                            if not materiallistFilesName:
                                materiallistFilesName =  f'{date.today()}__1 -- {customer_project}.pdf'
                            break
                    else:
                        materiallistFilesName = f'{date.today()}__1 -- {customer_project}.pdf'
        except ftplib.all_errors as e:
            print(f'[ 7001 ] -- Error bei der Funktion [ setFileNamePDF ]:\n{e}')
            sound.play_effect(play_sound('play_effect', 'mysql', 'error'))
            self.createLog(False, '[ 7001 ]', '', 2)
            self.createLog(False, 'Error bei der Funktion [ setFileNamePDF ]', '', 2)
            self.createLog(False, f'FTP-Server Fehler: {e}', '', 2)
            console.alert('ftp-error', 'Kundenordner konnten nicht erstellt werden. [ Kunde Erstellen ]\nFehlerausgabe im Terminal', hide_cancel_button=False)
        finally:
            self.connection_FTP.quit()
            
        print(materiallistFilesName)
        return os.path.join(os.path.dirname(sys.argv[0]), 'Reportlab', materiallistFilesName)

cvp

@DavinE is your @ui.in_background needed?

DavinE

@cvp, Honestly ? xD

i have no idea why i set this....

what does @ui.in_background and @on_main_thread exactly

cvp

@DavinE There are two base threads in Pythonista and you can force to run a process in The main_thread or in tHe ui one.
Remove this line and it is still not ok, put the line @on_main_thread

DavinE

@cvp like this:

@on_main_thread
def generatePDF(...)

and here:

def setFileNamePDF(self, customer, customer_project, materiallistType)

nothing ?

cvp

@DavinE Sincerely, I don't know but personally I would put the @on_main_thread before the other def.

DavinE

@cvp okay thanks i try it and response to you xD

DavinE

@cvp said:

@DavinE Sincerely, I don't know but personally I would put the @on_main_thread before the other def.

it works xD Thanks @cvp

cvp

@DavinE eureka

montykit

Hi everyone,

Is it possible to launch a python command without waiting for a return ? and therefore start the next command without waiting the previous one to finish ?

I searched and asked also on StackOverflow but so far I didn't found what I was looking for...

something that look promising might be the
1
concurrent.futures import ThreadPoolExecutor, ProcessPoolExecutor
as seen here -> https://stackoverflow.com/a/60832288/11943028

But this example is focus on results that I don't need. any ideas ?

Thank you.

https://fashionmentions.com/best-foundation/

DavinE

@montykit,

in my case @ui.in_backgroundworks... and don't wait for a return

maybe for you too

cvp

@montykit see the threading module, you could start one thread for each command

But what do you call a command?

cvp

@montykit try

import threading

class MyThread(threading.Thread):
	def __init__(self,cmd):
		threading.Thread.__init__(self)
		self.run = cmd

def cmd1():	
	s = 0
	for i in range(1000):
		s += 1
	print(s)
	
def cmd2():	
	s = 0
	for i in range(1000):
		s += i
	print(s)


MyThread(cmd1).start()
MyThread(cmd2).start()