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python pool map not running function

-1

Hi I am trying multiprocessing pool to speed up my for loop.

from multiprocessing import Pool
class Sim():
 def a11x(self, obj):
 print("ax")
 #do more

 def next_collision(self):
 with Pool(2) as p:
 print("map")
 p.map(self.a11x, self.combination)

self.combination being a list in a form [(a,b), (c,d), ...]

python multiprocessing

share|improve this question

edited Mar 7 at 0:13

Seung

asked Mar 6 at 23:36

SeungSeung

7710

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  It's working for me: repl.it/repls/CloseSlipperyHashfunction
  
  – Jab
  Mar 6 at 23:49
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @Jab waat.. how is that possible? I am using Anaconda package with spyder IDE in Windows 10. Rebooting didn't help. Do you have any thoughts?
  
  – Seung
  Mar 6 at 23:56
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  it's not that the program finishes without printing. It freezes and I have to restart the kernel.
  
  – Seung
  Mar 6 at 23:57
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  @Jab the freezing part is solved. It's because I didn't have if name == "main" part. But the function is still not called and only prints "map". However the program runs fine with Python without IDE
  
  – Seung
  Mar 7 at 0:19
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  @Seung: IDEs add in all sorts of introspection, debugging, dynamic compilation wrapping, implicit threading, and other nonsense that often breaks multiprocessing. It's just a fact of life. Lacking the __name__ == '__main__' guard doesn't help, but nothing makes multiprocessing work well when third party tools are hijacking the interpreter.
  
  – ShadowRanger
  Mar 7 at 0:21
  
  

  
  
  
  

 | 
show 6 more comments

-1

Hi I am trying multiprocessing pool to speed up my for loop.

from multiprocessing import Pool
class Sim():
 def a11x(self, obj):
 print("ax")
 #do more

 def next_collision(self):
 with Pool(2) as p:
 print("map")
 p.map(self.a11x, self.combination)

self.combination being a list in a form [(a,b), (c,d), ...]

python multiprocessing

share|improve this question

edited Mar 7 at 0:13

Seung

asked Mar 6 at 23:36

SeungSeung

7710

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  It's working for me: repl.it/repls/CloseSlipperyHashfunction
  
  – Jab
  Mar 6 at 23:49
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @Jab waat.. how is that possible? I am using Anaconda package with spyder IDE in Windows 10. Rebooting didn't help. Do you have any thoughts?
  
  – Seung
  Mar 6 at 23:56
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  it's not that the program finishes without printing. It freezes and I have to restart the kernel.
  
  – Seung
  Mar 6 at 23:57
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  @Jab the freezing part is solved. It's because I didn't have if name == "main" part. But the function is still not called and only prints "map". However the program runs fine with Python without IDE
  
  – Seung
  Mar 7 at 0:19
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  @Seung: IDEs add in all sorts of introspection, debugging, dynamic compilation wrapping, implicit threading, and other nonsense that often breaks multiprocessing. It's just a fact of life. Lacking the __name__ == '__main__' guard doesn't help, but nothing makes multiprocessing work well when third party tools are hijacking the interpreter.
  
  – ShadowRanger
  Mar 7 at 0:21
  
  

  
  
  
  

 | 
show 6 more comments

Hi I am trying multiprocessing pool to speed up my for loop.

from multiprocessing import Pool
class Sim():
 def a11x(self, obj):
 print("ax")
 #do more

 def next_collision(self):
 with Pool(2) as p:
 print("map")
 p.map(self.a11x, self.combination)

self.combination being a list in a form [(a,b), (c,d), ...]

python multiprocessing

share|improve this question

edited Mar 7 at 0:13

Seung

asked Mar 6 at 23:36

SeungSeung

7710

from multiprocessing import Pool
class Sim():
 def a11x(self, obj):
 print("ax")
 #do more

 def next_collision(self):
 with Pool(2) as p:
 print("map")
 p.map(self.a11x, self.combination)

share|improve this question

edited Mar 7 at 0:13

Seung

asked Mar 6 at 23:36

SeungSeung

7710

share|improve this question

edited Mar 7 at 0:13

Seung

asked Mar 6 at 23:36

SeungSeung

7710

asked Mar 6 at 23:36

SeungSeung

7710

asked Mar 6 at 23:36

SeungSeung

7710