技術標籤：python

every blog every motto: What doesn’t kill you makes you stronger.

0. 前言

在多程序中使用進度條

1. 正文

1.1 普通情況

import time

from tqdm import tqdm

for i in tqdm(range(1000)):
    time.sleep(0.01)

1.2 多程序

1.2.1 未列印進度條

import time

from tqdm import tqdm
from multiprocessing.pool import ThreadPool


def
 
 fun():
    """測試函式"""
    time.sleep(0.01)


pool = ThreadPool(4)
for i in range(1000):
    pool.apply_async(fun)

1.2.2 列印進度條

import time

from tqdm import tqdm
from multiprocessing.pool import ThreadPool


def fun():
    """測試函式"""
    time.sleep(
 
0.01)


num = 1000
pbar = tqdm(total=num)
update = lambda *args: pbar.update()
pool = ThreadPool(4)

for i in range(num):
    pool.apply_async(fun, callback=update)
pool.close()
pool.join()