Python中实现进度条的多种方法总结

import time
import sys
 
def simple_progress_bar(total_steps):
    for i in range(total_steps + 1):
        percent = (i / total_steps) * 100
        bar = '#' * int(percent / 10)
        sys.stdout.write(f"\r[{bar:<10}] {percent:.2f}%")
        sys.stdout.flush()
        time.sleep(0.1)  # 模拟任务耗时
    print("\nDone!")
 
# 使用示例
simple_progress_bar(100)

from tqdm import tqdm
import time
 
# 使用tqdm包装一个可迭代对象
for i in tqdm(range(100), desc="Processing"):
    time.sleep(0.1)  # 模拟任务耗时
 
# 或者使用手动更新模式
pbar = tqdm(total=100, desc="Manual")
for i in range(100):
    time.sleep(0.1)  # 模拟任务耗时
    pbar.update(1)   # 更新进度
pbar.close()

from alive_progress import alive_bar
import time
 
# 使用alive_bar创建进度条
with alive_bar(100, title="Alive Progress") as bar:
    for i in range(100):
        time.sleep(0.1)  # 模拟任务耗时
        bar()            # 更新进度条
 
# 还可以添加自定义的动画和格式
from alive_progress.styles import Spinner
 
with alive_bar(100, title="Custom Style", bar_type='filling_squares', spinner=Spinner.dots12) as bar:
    for i in range(100):
        time.sleep(0.1)
        bar()

from progress.bar import Bar
import time
 
bar = Bar('Processing', max=100)
for i in range(100):
    time.sleep(0.1)  # 模拟任务耗时
    bar.next()       # 更新进度条
bar.finish()
 
# 嵌套进度条示例
outer_bar = Bar('Outer Progress', max=10)
for i in range(10):
    inner_bar = Bar(f'Inner Progress {i+1}', max=10)
    for j in range(10):
        time.sleep(0.1)
        inner_bar.next()
    inner_bar.finish()
    outer_bar.next()
outer_bar.finish()

import click
import time
 
@click.command()
def process():
    with click.progressbar(range(100), label='Processing') as bar:
        for i in bar:
            time.sleep(0.1)  # 模拟任务耗时
 
if __name__ == '__main__':
    process()

import sys
import time
 
class CustomProgressBar:
    def __init__(self, total, length=50):
        self.total = total
        self.length = length
        self.progress = 0
 
    def update(self, step=1):
        self.progress += step
        percent = (self.progress / self.total) * 100
        bar = '#' * int(percent * self.length / 100)
        sys.stdout.write(f"\r[{bar:<{self.length}}] {percent:.2f}%")
        sys.stdout.flush()
 
    def finish(self):
        print("\nDone!")
 
# 使用示例
pbar = CustomProgressBar(100)
for i in range(100):
    time.sleep(0.1)  # 模拟任务耗时
    pbar.update()    # 更新进度条
pbar.finish()        # 结束进度条

import tkinter as tk
from tkinter import ttk
import time
 
def process():
    for i in range(101):
        bar['value'] = i  # 更新进度条值
        root.update_idletasks()  # 更新GUI界面
        time.sleep(0.1)  # 模拟任务耗时
 
# 创建主窗口
root = tk.Tk()
root.title("GUI Progress Bar")
 
# 创建进度条
bar = ttk.Progressbar(root, orient="horizontal", length=300, mode="determinate")
bar.pack(pady=20)
 
# 启动处理任务
root.after(0, process)
 
# 运行主循环
root.mainloop()