Python中进度条tqdm包使用方法及特性介绍

pip install tqdm

from tqdm import tqdm
for i in tqdm(range(1000)):  
     #do something
     pass  

for char in tqdm(["a", "b", "c", "d"]):
    #do something
    pass

from tqdm import trange
for i in trange(100):
    #do something
    pass

bar = tqdm(["a", "b", "c", "d"])
for char in pbar:
    pbar.set_description("Processing %s" % char)

from tqdm import tqdm
import time
for i in tqdm(range(20), ascii=True,desc="1st loop"):
  for j in tqdm(range(10), ascii=True,desc="2nd loop"):
    time.sleep(0.01)

from time import sleep
from tqdm import trange, tqdm
from multiprocessing import Pool, freeze_support, RLock
L = list(range(9))
def progresser(n):
  interval = 0.001 / (n + 2)
  total = 5000
  text = "#{}, est. {:<04.2}s".format(n, interval * total)
  for i in trange(total, desc=text, position=n,ascii=True):
    sleep(interval)
if __name__ == '__main__':
  freeze_support() # for Windows support
  p = Pool(len(L),
       # again, for Windows support
       initializer=tqdm.set_lock, initargs=(RLock(),))
  p.map(progresser, L)
  print("\n" * (len(L) - 2))

import pandas as pd
import numpy as np
from tqdm import tqdm
df = pd.DataFrame(np.random.randint(0, 100, (100000, 6)))
tqdm.pandas(desc="my bar!")
df.progress_apply(lambda x: x**2)

from tqdm import tqdm
import os.path
def find_files_recursively(path, show_progress=True):
  files = []
  # total=1 assumes `path` is a file
  t = tqdm(total=1, unit="file", disable=not show_progress)
  if not os.path.exists(path):
    raise IOError("Cannot find:" + path)
  def append_found_file(f):
    files.append(f)
    t.update()
  def list_found_dir(path):
    """returns os.listdir(path) assuming os.path.isdir(path)"""
    try:
      listing = os.listdir(path)
    except:
      return []
    # subtract 1 since a "file" we found was actually this directory
    t.total += len(listing) - 1
    # fancy way to give info without forcing a refresh
    t.set_postfix(dir=path[-10:], refresh=False)
    t.update(0) # may trigger a refresh
    return listing
  def recursively_search(path):
    if os.path.isdir(path):
      for f in list_found_dir(path):
        recursively_search(os.path.join(path, f))
    else:
      append_found_file(path)
  recursively_search(path)
  t.set_postfix(dir=path)
  t.close()
  return files
find_files_recursively("E:/")

from tqdm.autonotebook import tqdm
[i for i in tqdm(range(1000))];