随机生成user-agent函数

import random

def get_ua():
first_num = random.randint(55, 62)
third_num = random.randint(0, 3200)
fourth_num = random.randint(0, 140)
os_type = [
‘(Windows NT 6.1; WOW64)’, ‘(Windows NT 10.0; WOW64)’, ‘(X11; Linux x86_64)’,
‘(Macintosh; Intel Mac OS X 10_12_6)’
]
chrome_version = ‘Chrome/{}.0.{}.{}’.format(first_num, third_num, fourth_num)

ua = ' '.join(['Mozilla/5.0', random.choice(os_type), 'AppleWebKit/537.36',
               '(KHTML, like Gecko)', chrome_version, 'Safari/537.36']
              )
return ua

来源：https://blog.csdn.net/zhushixia1989/article/details/102761271