多进程
在python
中使用multiprocessing
时,multiprocessing.Pool
必须写在if __name__ == '__main__':
下,否则会报错。不是很实用。
import multiprocessing
def fun(p):
print(p)
return p[0], p[1]
def do_something(x):
v = pow(x, 2)
return v
if __name__ == '__main__':
t_dir = "C:/Users/user/Desktop/u"
dir_list = os.listdir(t_dir)
lst = []
for i in range(len(dir_list)):
lst.append((dir_list[i], i))
p = multiprocessing.Pool(4)
# items = [x for x in range(1, 100000000)]
dis= p.map(fun, lst)
p.close()
p.join()
来源:https://blog.csdn.net/qq_40250862/article/details/102752919