Error whith lambda function as argument #600
Description
Hi,
My environment : conda environment, python 3.5.4
I have the following bug :
from joblib import Parallel, delayed
a = lambda x: 2*x
def id(x):
return x
Parallel(n_jobs=2)(delayed(id)(a) for x in range(10))Which raises this error :
Traceback (most recent call last):
File "/home/cdancette/anaconda3/envs/abnet3-bis/lib/python3.5/site-packages/joblib/externals/loky/backend/queues.py", line 150, in _feed
obj, reducers=reducers)
File "/home/cdancette/anaconda3/envs/abnet3-bis/lib/python3.5/site-packages/joblib/externals/loky/backend/reduction.py", line 145, in dumps
p.dump(obj)
_pickle.PicklingError: Can't pickle <function <lambda> at 0x2aaab1f990d0>: attribute lookup <lambda> on __main__ failed
I tried with joblib version 0.11, and with the master version, and I have an error in both cases.
I read that lambda were supposed to be supported on master, do you know how I could fix this issue ?
Thanks !