i have have code similaire to what shown below, So please i want the proper solution to run this without errors, i got shared memory error and also open gui many times,
mainapp = ProcessFiles()
p = multiprocessing.Pool()
p.map(mainapp.getPdfInfo, Files_list)
p.close()
class ProcessFiles:
def __init__():
self.lock = multiprocessing.Lock()
def getPdfInfo(file):
#READ FILES DATA AND DO SOME STUFFS
self.lock.aquere()
#INSERT DATA TO DATABASE
self.lock.release()
and this the error msg
TypeError: can't pickle sqlite3.Connection objects
Alos tried with multiprocessing.Manager() and also got errors, Code shown below
mainapp = ProcessFiles()
p = multiprocessing.Pool()
p.map(mainapp.getPdfInfo, Files_list)
p.close()
class ProcessFiles:
def __init__():
m = multiprocessing.Manager()
self.lock = m.Lock()
def getPdfInfo(file):
#READ FILES DATA AND DO SOME STUFFS
self.lock.acquire()
#INSERT DATA TO DATABASE
self.lock.release()
and thats the error msg
Traceback (most recent call last):
File "<string>", line 1, in <module>
File "C:\Python37\lib\multiprocessing\spawn.py", line 105, in spawn_main
exitcode = _main(fd)
++++++++++++++++++++++++++++++
_check_not_importing_main()
File "C:\Python37\lib\multiprocessing\spawn.py", line 136, in
_check_not_importing_main
is not going to be frozen to produce an executable.''')
RuntimeError:
An attempt has been made to start a new process before the
current process has finished its bootstrapping phase.
This probably means that you are not using fork to start your
child processes and you have forgotten to use the proper idiom
in the main module:
if __name__ == '__main__':
freeze_support()
...
The "freeze_support()" line can be omitted if the program
is not going to be frozen to produce an executable.
