为什么TQM仅在多次迭代后更新？

for name in tqdm(final_urls): print(f"Downloading {name} files...") url_list = final_urls[name] class_dir = os.path.join("data", name) if not os.path.isdir(class_dir): os.mkdir(class_dir) for idx, url in enumerate(url_list): filepath = os.path.join(class_dir, f"audio{idx}.wav") if not os.path.isfile(filepath): r = requests.get(url) with open(filepath, "wb+") as f: f.write(r.content)

Download files... 0%| | 0/32 [00:00<?, ?it/s]Downloading Bearded Seal files... Downloading Bottlenose Dolphin files... Downloading Rough-Toothed Dolphin files... Downloading Common Dolphin files... Downloading Striped Dolphin files... Downloading Fin, Finback Whale files... Downloading Melon Headed Whale files... Downloading Killer Whale files... Downloading False Killer Whale files... Downloading Spinner Dolphin files... Downloading Ross Seal files... Downloading Harp Seal files... Downloading Northern Right Whale files... Downloading Short-Finned (Pacific) Pilot Whale files... 44%|██████████████████████████████████████████████▍ | 14/32 [01:34<02:01, 6.74s/it]Downloading White-beaked Dolphin files... Downloading Narwhal files... Downloading Humpback Whale files... Downloading Walrus files... Downloading Fraser's Dolphin files... Downloading Beluga, White Whale files... Downloading Clymene Dolphin files... Downloading Southern Right Whale files... Downloading Atlantic Spotted Dolphin files... Downloading Leopard Seal files... Downloading Long-Finned Pilot Whale files... Downloading Grampus, Risso's Dolphin files... Downloading Sperm Whale files... Downloading Pantropical Spotted Dolphin files... Downloading Bowhead Whale files... Downloading Minke Whale files... Downloading White-sided Dolphin files... Downloading Weddell Seal files... 100%|██████████████████████████████████████████████████████████████████████████████████████████████████████████| 32/32 [01:34<00:00, 2.95s/it]

1条回答

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1楼 · 发布于 2024-06-16 10:06:48

默认情况下，TQM不会显示每次更新（如果更新发生得很快）；默认情况下，它每秒仅更新10次。如果必须在每次迭代时更新输出，则可以将miniters参数设置为1

默认值为miniters=None，这意味着它将根据mininterval动态调整迭代计数，该值设置为0.1秒

您还使用了print()，它替换了条输出。不要这样做，更新将被覆盖，您将得到非常混乱的输出

tqdm类有一个专用的^{} method，请使用它：

for name in tqdm(final_urls):
    tqdm.write(f"Downloading {name} files...")

使用该方法，tqdm可以根据以下文档处理消息的放置方式：

Print a message via tqdm (without overlap with bars).

使用miniters=1快速演示以显示差异：

>>> from tqdm import tqdm
>>> from faker import Faker
>>> import time, random
>>> for word in tqdm(Faker().words(10), ncols=40, miniters=1):
...     print(f"Using print: {word}")
...     time.sleep(random.random() * .2)
...
  0%|            | 0/10 [00:00<?, ?it/s]Using print: of
 10%|▍   | 1/10 [00:00<00:01,  5.02it/s]Using print: we
 20%|▊   | 2/10 [00:00<00:01,  5.52it/s]Using print: message
 30%|█▏  | 3/10 [00:00<00:01,  5.83it/s]Using print: win
Using print: seem
 50%|██  | 5/10 [00:00<00:00,  9.12it/s]Using print: especially
 60%|██▍ | 6/10 [00:00<00:00,  8.00it/s]Using print: power
 70%|██▊ | 7/10 [00:00<00:00,  8.42it/s]Using print: material
Using print: both
 90%|███▌| 9/10 [00:01<00:00,  8.27it/s]Using print: single
100%|███| 10/10 [00:01<00:00,  8.09it/s]
>>> for word in tqdm(Faker().words(10), ncols=40, miniters=1):
...     tqdm.write(f"Using tqdm.write: {word}")
...     time.sleep(random.random() * .2)
...
Using tqdm.write: democratic
Using tqdm.write: manage
Using tqdm.write: generation
Using tqdm.write: perhaps
Using tqdm.write: purpose
Using tqdm.write: about
Using tqdm.write: evidence
Using tqdm.write: everything
Using tqdm.write: push
Using tqdm.write: large
100%|███| 10/10 [00:01<00:00,  7.65it/s]

并且，仍在使用tqdm.write()，miniters=1进行中：

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