python 多进程的参数问题。poll.map放一个参数是没有问题的，但是多个参数的时候报错，应怎么解决的？

Posted 2023-03-27

map多进程的问题 map() takes from 3 to 4 positional arguments but 6 were given

map的问题 map() takes from 3 to 4 positional arguments but 6 were given
from multiprocessing import Pool , Lock ,Manager
poll=Pool()
def save(detail_url,g_count,b_count,d_count):
return detail_url*3+g_count+b_count+d_count

detail_url=[1]
g_count=[0]
b_count=[2]
d_count=[0]
poll.map(save, detail_url,g_count,b_count,d_count)

/Library/Frameworks/Python.framework/Versions/3.5/bin/python3.5 /Users/abc/PycharmProjects/ganji/test.py
Traceback (most recent call last):
File "/Users/abc/PycharmProjects/ganji/test.py", line 9, in <module>
poll.map(save, detail_url,g_count,b_count,d_count)
TypeError: map() takes from 3 to 4 positional arguments but 6 were given

Process finished with exit code 1

参考技术A 你需要apply，不是map。具体信息查对应method的文档。