Trying to use threading.local()

[Peter Otten]

Antoon Pardon wrote:

> On 12-09-18 22:14, Peter Otten wrote:
>> As I understand it you need one local() instance that is shared by all
>> workers. Every thead will then see thread-specific values.
> 
> It has always puzzled me how this is useful. The times I work with
> threads, I just put thread specific values in the local variables of the
> thread function.

That would be my preferred approach, too. Passing around variables through 
multiple levels of function calls may be inconvenient, but global variables 
tend to cause more trouble in the long run.
 
> What is gained by using threading.local instances?
 
It's magic; it confuses the uninitiated ;)