yet another confusion with multiprocessing error, ‘module’ object has no attribute ‘f’

by

Restructure your code so that the f() function is defined before you create instance of Pool. Otherwise the worker cannot see your function.

#!/usr/bin/python
# -*- coding: utf-8 -*-

from multiprocessing import Pool

def f(x):
    return x*x

p = Pool(1)
p.map(f, [1, 2, 3])

More Related Contents:

  1. Multiprocessing vs Threading Python [duplicate]
  2. multiprocessing: How do I share a dict among multiple processes?
  3. multiprocessing global variable updates not returned to parent
  4. How should I log while using multiprocessing in Python?
  5. multiprocessing: sharing a large read-only object between processes?
  6. Python sharing a lock between processes
  7. Python multiprocessing safely writing to a file
  8. How to use multiprocessing queue in Python?
  9. where to put freeze_support() in a Python script?
  10. Multiprocessing a for loop?
  11. Using Python’s Multiprocessing module to execute simultaneous and separate SEAWAT/MODFLOW model runs
  12. Poor scaling of multiprocessing Pool.map() on a list of large objects: How to achieve better parallel scaling in python?
  13. multiprocessing.pool.MaybeEncodingError: ‘TypeError(“cannot serialize ‘_io.BufferedReader’ object”,)’
  14. High Memory Usage Using Python Multiprocessing
  15. “chunksize” parameter in multiprocessing.Pool.map
  16. Connection problems with SQLAlchemy and multiple processes
  17. OSError 38 [Errno 38] with multiprocessing
  18. Can multiprocessing Process class be run from IDLE
  19. Python multiprocess profiling
  20. What’s the difference between ThreadPool vs Pool in the multiprocessing module?
  21. how to to terminate process using python’s multiprocessing
  22. Using python multiprocessing Pool in the terminal and in code modules for Django or Flask
  23. Using 100% of all cores with the multiprocessing module
  24. Mix Python Twisted with multiprocessing?
  25. Can I get a return value from multiprocessing.Process?
  26. How to utilize all cores with python multiprocessing
  27. Tensorflow and Multiprocessing: Passing Sessions
  28. How can I share a class between processes?
  29. Multiprocessing useless with urllib2?
  30. Python multiprocessing linux windows difference

Leave a Comment