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Python-for-Geeks/Chapter7/multiprocessing/processes_casestudy.py
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2021-03-31 09:22:38 +04:00

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Python

#processes_casestudy.py
import time
from multiprocessing import Process, JoinableQueue
from getfilelistpy import getfilelist
import gdown
PROCESSES_POOL_SIZE = 5
#update the resource object as per your API key and the gdriver folder id
resource = {
"api_key": "AIzaSyDYKmm85keqnk4bDpYa2bxddKrGns4z0",
"id": "0B8TxHW2Ci6dbckVweTRtV3RUU",
"fields": "files(name,id,webContentLink)",
}
def mydownloader( queue):
while True:
# Get the file id and name from the queue
item1 = queue.get()
try:
gdown.download(item1['webContentLink'],
'./files/{}'.format(item1['name']),
quiet=False)
finally:
queue.task_done()
def get_files(resource):
res = getfilelist.GetFileList(resource)
files_list = res['fileList'][0]
return files_list
def main ():
files = get_files(resource)
#add files info into the queue
myqueue = JoinableQueue()
for item in files['files']:
myqueue.put(item)
processes = []
for id in range(PROCESSES_POOL_SIZE):
p = Process(target=mydownloader,
args=(myqueue,))
p.daemon = True
p.start()
start_time = time.monotonic()
myqueue.join()
total_exec_time = time.monotonic() - start_time
print(f'Time taken to download: {total_exec_time:.2f} seconds')
main()