import sys
import time

# 普通进度条
# 在代码迭代运行中进行统计计算，并使用格式化字符串输出代码运行进度
def progress_bar():
 for i in range(1, 101): # 1-100
  print("\r", end="") # \r 表示将光标的位置回退到本行的开头位置
  print("Download progress: {} {}%".format("▋" * (i // 2), i), end="")
  sys.stdout.flush()  # sys.stdout.flush()的作用就是显示地让缓冲区的内容输出。
  time.sleep(0.02)
progress_bar()

import time

scale = 50

start = time.perf_counter() # 返回性能计数器的值（以秒为单位）
for i in range(scale + 1):
 progress_bar = "▋" * i
 completion_ratio = (i / scale) * 100
 dur_time = time.perf_counter() - start
 print("\rDownload Process：{:^3.0f}% [{}] {:.2f}s".format(completion_ratio, progress_bar, dur_time),end = "")
 time.sleep(0.1)

from time import sleep
from tqdm import tqdm
# 里面传入一个可迭代对象
for i in tqdm(range(1, 101)):
 # 模拟你的任务
 sleep(0.05)

sleep(0.5)

import time
import progressbar

def custom_len(value):
 # These characters take up more space
 characters = {
  '进': 3,
  '度': 3,
 }

 total = 0
 for c in value:
  total += characters.get(c, 1)

 return total
bar = progressbar.ProgressBar(
 widgets=[
  '进度: ',
  progressbar.Bar(marker='#', left='|', right='|'),
  ' ',
  progressbar.Counter(format='%(value)02d/%(max_value)d'),
 ],
 len_func=custom_len,
)
for i in bar(range(100)):
 time.sleep(0.05)