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Age cutoffFAILdownload_stamp > now() - 6 MONTH10.3 months ago
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URLhttps://python-forum.io/thread-36751.html
Last Crawled2025-06-12 08:56:58 (10 months ago)
First Indexed2022-03-26 06:14:02 (4 years ago)
HTTP Status Code200
Meta TitlePython multiprocessing Pool apply async wait for process to complete
Meta DescriptionThe official dedicated python forum, I have coded a simple program of run through the list, but apply_sync isn't waiting until the list is complete, here is the code import itertools import multiprocessing from multiprocessing import Poo
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from multiprocessing import Pool from selenium import webdriver from selenium.webdriver.chrome.options import Options from selenium.webdriver.common.by import By from selenium.webdriver.common.keys import Keys from tkinter import messagebox x = [ 'annah' , 'reena' , 'jermy' , 'sunny' , 'chinni' ] options.binary_location = r 'drivers/Browser/chrome.exe' driver = webdriver.Chrome(executable_path = r 'drivers/chromedriver.exe' , options = options) driver.find_element(By.XPATH, '//input[@name="q"]' ).send_keys(name) driver.find_element(By.XPATH, '//input[@name="q"]' ).send_keys(Keys.ENTER) for usr in itertools.zip_longest(x): y.apply_async(next_name, args = (usr, )) messagebox.showinfo( "Sample Program" , "List Completed" ) os.system( "taskkill /F /IM chromedriver.exe /T" ) startbtn = ttk.Button(root, text = "start" , command = start) stopbtn = ttk.Button(root, text = "stop" , command = stop) multiprocessing.freeze_support()
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[4](https://python-forum.io/ratethread.php?tid=36751&rating=4&my_post_key=482e582ace92195fefc378b9de1b873a) - [5](https://python-forum.io/ratethread.php?tid=36751&rating=5&my_post_key=482e582ace92195fefc378b9de1b873a) | | | |---|---| | **[Thread Modes]()** **Python multiprocessing Pool apply async wait for process to complete** | | | | | | 12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849 | `import` `itertools` `import` `multiprocessing` `from` `multiprocessing``import` `Pool` `import` `time` `from` `tkinter``import` `*` `from` `tkinter``import` `ttk` `from` `selenium``import` `webdriver` `from` `selenium.webdriver.chrome.options``import` `Options` `from` `selenium.webdriver.common.by``import` `By` `from` `selenium.webdriver.common.keys``import` `Keys` `import` `os` `from` `tkinter``import` `messagebox` `x``=` `[``'annah'``,``'reena'``,``'jermy'``,``'sunny'``,``'chinni'``]` `def` `next_name(name):` `    ``options``=` `Options()` `    ``options.binary_location``=` `r``'drivers/Browser/chrome.exe'` `    ``driver``=` `webdriver.Chrome(executable_path``=``r``'drivers/chromedriver.exe'``, options``=``options)` `    ``driver.get(``'<http://google.com>'``)` `    ``time.sleep(``2``)` `    ``driver.find_element(By.XPATH,``'//input[@name="q"]'``).send_keys(name)` `    ``time.sleep(``2``)` `    ``driver.find_element(By.XPATH,``'//input[@name="q"]'``).send_keys(Keys.ENTER)` `    ``time.sleep(``3``)` `    ``driver.close()` `def` `start():` `    ``global` `y` `    ``y``=` `Pool(processes``=``2``)` `    ``for` `usr``in` `itertools.zip_longest(x):` `        ``y.apply_async(next_name, args``=``(usr, ))` `    ``#messagebox has to popup when list is completed` `    ``messagebox.showinfo(``"Sample Program"``,``"List Completed"``)` `def` `stop():` `    ``y.terminate()` `    ``os.system(``"taskkill /F /IM chromedriver.exe /T"``)` `root``=` `Tk()` `startbtn``=` `ttk.Button(root, text``=``"start"``, command``=``start)` `startbtn.pack()` `stopbtn``=` `ttk.Button(root, text``=``"stop"``, command``=``stop)` `stopbtn.pack()` `root.geometry(``'300x300'``)` `if` `__name__``=``=` `'__main__'``:` `    ``multiprocessing.freeze_support()` `    ``root.mainloop()` | | | | | 1234567 | `def` `mycallback(x):` `    ``messagebox.showinfo(``"Sample Program"``,``"Completed"``)` `def` `start():` `    ``global` `y` `    ``pool``=` `Pool(processes``=``2``)` `    ``pool.map_async(next_name, x, callback``=``mycallback)` | | | | | | | | |---|---|---|---|---|---| | **Possibly Related Threads…** | | | | | | | **Thread** | **Author** | **Replies** | **Views** | **Last Post** | | | | [issue with multiprocessing in embeded python](https://python-forum.io/thread-44078.html) | [otaolafr](https://python-forum.io/user-40652.html) | [1](https://python-forum.io/misc.php?action=whoposted&tid=44078) | 477 | Mar-05-2025, 06:24 PM [Last Post](https://python-forum.io/thread-44078-lastpost.html): [deanhystad](https://python-forum.io/user-23001.html) | | | [Trying to get JSON object in python and process it further](https://python-forum.io/thread-43433.html) | [Creepy](https://python-forum.io/user-31360.html) | [2](https://python-forum.io/misc.php?action=whoposted&tid=43433) | 1,221 | Oct-24-2024, 08:46 AM [Last Post](https://python-forum.io/thread-43433-lastpost.html): [buran](https://python-forum.io/user-9.html) | | | [How to process tasks as they complete when using TaskGroup?](https://python-forum.io/thread-43224.html) | [odigity](https://python-forum.io/user-39146.html) | [2](https://python-forum.io/misc.php?action=whoposted&tid=43224) | 1,166 | Sep-17-2024, 03:42 PM [Last Post](https://python-forum.io/thread-43224-lastpost.html): [odigity](https://python-forum.io/user-39146.html) | | ![Shocked](https://python-forum.io/images/icons/shocked.png) | [async was never was never awaited but the await is still in the code](https://python-forum.io/thread-42248.html) | [Nietzsche](https://python-forum.io/user-35287.html) | [3](https://python-forum.io/misc.php?action=whoposted&tid=42248) | 1,538 | Jun-04-2024, 02:28 PM [Last Post](https://python-forum.io/thread-42248-lastpost.html): [deanhystad](https://python-forum.io/user-23001.html) | | | [Is this a multiprocessing bug in Python - 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Shard51 (laksa)
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