threading

import os
import multiprocessing

1、获取Chromedriver驱动动态路径
webdriver.Chrome(executable_path=os.path.join(os.getcwd(), "chromedriver.exe"))
2、等待特地（label）网页元素加载完毕，返回真
is_disappeared = WebDriverWait(dr, 30, 1, ignored_exceptions=TimeoutException).until(lambda x: x.find_element_by_id("label").is_displayed())
3、多进程
if __name__ == '__main__':
　　multiprocessing.freeze_support()
　　pool = multiprocessing.Pool(processes=4)
　　for i in range(2):
　　　　pool.apply_async(func,args=(args,)）
　　pool.close() 
　　pool.join()

4、多线程
if __name__ == '__main__':
mutex = threading.RLock()
task_list = []
for i in range(3)
　　t. = threading.Thread(target=main_func, args=(args1, args2, mutex,))
　　task_list.append(t)
for i in task_list:
　　i.start()
for i in  task_list:
　　i.join()

import threading


class MyThread(threading.Thread):
    def __init__(self, para):
        threading.Thread.__init__(self)
        self.para = para

    def operation(self, para):
        print("deal with para", para)

    def run(self):
        self.operation(self.para)


if __name__ == "__main__":
    paras = ["1", "2"]
    threads = []
    for para in paras:
        threads.append(MyThread(para))
    for thread in threads:
        thread.start()
    for thread in threads:
        thread.join()