pythonのgevent同步异步区别
2021-07-08 02:05
标签：process pen dmi monk tps yahoo user from char pythonのgevent同步异步区别 标签：process pen dmi monk tps yahoo user from char 原文地址：https://www.cnblogs.com/pengpengzhang/p/9585034.html 1 #!/usr/bin/env python
2
3 from urllib import request
4 import gevent
5 from gevent import monkey
6 import time
7
8 monkey.patch_all() # 把当前程序所有的IO操作给我单独的做上标记。
9 def f(url):
10 resp = request.urlopen(url)
11 data = resp.read()
12 print(len(data))
13
14 urls = ["https://www.python.org",
15 "https://www.yahoo.com",
16 "https://github.com"
17 ]
18 time_start = time.time()
19 for url in urls:
20 f(url)
21 print("同步花费时间：",time.time()-time_start)
22
23 asy_time = time.time()
24 gevent.joinall({
25 gevent.spawn(f,"https://www.python.org"),
26 gevent.spawn(f,"https://www.yahoo.com"),
27 gevent.spawn(f,"https://github.com"),
28 })
29 print("异步花费时间：",time.time()-asy_time)
C:\Users\Administrator\AppData\Local\Programs\Python\Python37\python.exe D:/PythonStudy/charm/01/day10/爬虫.py
48822
479812
64096
同步花费时间： 4.925281763076782
48822
64096
477025
异步花费时间： 3.1961827278137207
Process finished with exit code 0
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