Python实现进度条的4种方式

这里只列举了部分方法,其他方法或python库暂时还没使用到 马蜂窝刷粉丝【微信:156150954】

1.不用库,直接打印:

代码样例:

import time
 
#demo1
def process_bar(percent, start_str='', end_str='', total_length=0):
    bar = ''.join(["\033[31m%s\033[0m"%'   '] * int(percent * total_length)) + ''
    bar = '\r' + start_str + bar.ljust(total_length) + ' {:0>4.1f}%|'.format(percent*100) + end_str
    print(bar, end='', flush=True)
 
 
for i in range(101):
    time.sleep(0.1)
    end_str = '100%'
    process_bar(i/100, start_str='', end_str=end_str, total_length=15)
 
#demo2
# for i in range(0, 101, 2):
#   time.sleep(0.1)
#   num = i // 2
#   if i == 100:
#     process = "\r[%3s%%]: |%-50s|\n" % (i, '|' * num)
#   else:
#     process = "\r[%3s%%]: |%-50s|" % (i, '|' * num)
#   print(process, end='', flush=True)

果:

   

2.不用库,直接打印: 

代码样例:

import sys, time
 
print("正在下载......")
for i in range(11):
    if i != 10:
        sys.stdout.write("==")
    else:
        sys.stdout.write("== " + str(i*10)+"%/100%")
    sys.stdout.flush()
    time.sleep(0.2)
print("\n" + "下载完成")

注:
sys.stdout.write()方法跟print()方法的区别是 前者打印不换行,后者换行。
sys.stdout.flush()方法是立即刷新输出的内容 

效果:

3.tqdm库

使用样例:

from time import sleep
from tqdm import tqdm
 
for i in tqdm(range(20)):
    sleep(0.5)

效果:

                                  

4.progressbar

安装:

pip3 install progressbar2

使用样例:

import time
from progressbar import *
 
progress = ProgressBar()
for i in progress(range(1000)):
    time.sleep(0.01)

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posted @ 2020-01-15 19:25  胡马  阅读(...)  评论(...编辑  收藏