Python 进度条

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img

1. print(str, end='\r')

# coding:utf-8
import requests


url = "http://wx4.sinaimg.cn/large/d030806aly1fq1vn8j0ajj21ho28bduy.jpg"
rsp = requests.head(url)
size = rsp.headers['Content-Length']

print("文件大小: %.2f MB" % (int(size)/1024/1024))
p = 0
rp = requests.get(url, stream=True)
with open('1.jpg', 'wb') as f:
    for i in rp.iter_content(chunk_size=1024):
        p += len(i)
        f.write(i)
        done = int(50 * p / int(size))
        print("[%s%s] %s%%" % ('#' * done, '' * (50 - done), done+done), end='\r')
print("\nOK")

结果

2. sys.stdout.write()

import sys
import requests


url = "http://wx4.sinaimg.cn/large/d030806aly1fq1vn8j0ajj21ho28bduy.jpg"
rsp = requests.head(url)
size = rsp.headers['Content-Length']

print("文件大小: %.2f MB" % (int(size)/1024/1024))
p = 0
rp = requests.get(url, stream=True)
with open('1.jpg', 'wb') as f:
    for i in rp.iter_content(chunk_size=1024):
        p += len(i)
        f.write(i)
        done = int(50 * p / int(size))
        sys.stdout.write("\r[%s%s] %s%%" % ('#' * done, '' * (50 - done), done+done))
        sys.stdout.flush()
print("\nOK")

结果