selenium 优化 提升性能 – Python量化投资

selenium 优化 提升性能

结果:

用时:7.200437545776367s
用时:5.909301519393921s headless
用时:4.924464702606201s headless\phone
用时:4.935844421386719s headless\phone\no image

为了测试图片,http://image.baidu.com/

 事实证明,no image对打开网页没影响,对网络有影响吧,这个有点


 1 from selenium import webdriver
 2 import time
 3 
 4 
 5 def method0():
 6     s1 = time.time()
 7     options = webdriver.ChromeOptions()
 8     options.binary_location = r'd:\downloads\app\chrome\chrome.exe'
 9     browser = webdriver.Chrome(options=options)
10     browser.get('http://image.baidu.com/')
11     browser.save_screenshot('baidu.png')
12     browser.quit()
13     s2 = time.time()
14     print('用时:{0}s'.format(s2 - s1))
15 
16 
17 def method1():
18     # 优化1 headless
19     s1 = time.time()
20     options = webdriver.ChromeOptions()
21     options.binary_location = r'd:\downloads\app\chrome\chrome.exe'
22     options.headless = True
23     browser = webdriver.Chrome(options=options)
24     browser.get('http://image.baidu.com/')
25     browser.save_screenshot('baidu_headless.png')
26     browser.quit()
27     s2 = time.time()
28     print('用时:{0}s headless'.format(s2 - s1))
29 
30 
31 def method2():
32     # 优化2 headless\phone
33     s1 = time.time()
34     options = webdriver.ChromeOptions()
35     options.add_argument('user-agent={0}'.format('MQQBrowser/26 Mozilla/5.0 (Linux; U; Android 2.3.7; zh-cn; MB200 Build/GRJ22; CyanogenMod-7) AppleWebKit/533.1 (KHTML, like Gecko) Version/4.0 Mobile Safari/533.1'))
36     options.binary_location = r'd:\downloads\app\chrome\chrome.exe'
37     options.headless = True
38     browser = webdriver.Chrome(options=options)
39     browser.get('http://image.baidu.com/')
40     browser.save_screenshot('baidu_headless_phone.png')
41     browser.quit()
42     s2 = time.time()
43     print(r'用时:{0}s headless\phone'.format(s2 - s1))
44 
45 
46 def method3():
47     # 优化3 headless\phone\no image
48     s1 = time.time()
49     options = webdriver.ChromeOptions()
50     options.add_argument('user-agent={0}'.format('MQQBrowser/26 Mozilla/5.0 (Linux; U; Android 2.3.7; zh-cn; MB200 Build/GRJ22; CyanogenMod-7) AppleWebKit/533.1 (KHTML, like Gecko) Version/4.0 Mobile Safari/533.1'))
51     options.binary_location = r'd:\downloads\app\chrome\chrome.exe'
52     options.headless = True
53     options.add_experimental_option("prefs", {"profile.managed_default_content_settings.images": 2})
54     browser = webdriver.Chrome(options=options)
55     browser.get('http://image.baidu.com/')
56     browser.save_screenshot('baidu_headless_phone_image.png')
57     browser.quit()
58     s2 = time.time()
59     print(r'用时:{0}s headless\phone\no image'.format(s2 - s1))
60 
61 
62 if __name__ == '__main__':
63     method0()
64     method1()
65     method2()
66     method3()


 

https://www.cnblogs.com/Running_Zhang/p/11484344.html

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