TypeError: unhashable type: 'list'

[oakley04]

[woebin.py]
line 1020: dtx_suffix = pd.merge(dtx, binx, how='left', on=x_i).sort_values('rowid')
.set_index(dtx.index)[['_'.join([x_i,woe_points])]]

raise error on col "other.installment.plans" :
TypeError: unhashable type: 'list'
++++++++++++++++++++++++++++++++
other.installment.plans
0 [bank, stores]
1 [none]

[ShichenXie]

please provide a sample data and codes to reproduce your issue. Thanks

[Anaxximandar]

I have the same error when I follow the example provided after this : train_woe = sc.woebin_ply(train, bins_adj). the data are germancredit (not my own data).
I installed the version from pip install git+git://github.com/shichenxie/scorecardpy.git

Traceback (most recent call last):

File "", line 1, in
train_woe = sc.woebin_ply(train, bins_adj)

File "C:\Users\HP\AppData\Local\conda\conda\envs\myenv\lib\site-packages\scorecardpy\woebin.py", line 1137, in woebin_ply
dat_suffix = pool.starmap(woepoints_ply1, args)

File "C:\Users\HP\AppData\Local\conda\conda\envs\myenv\lib\multiprocessing\pool.py", line 276, in starmap
return self._map_async(func, iterable, starmapstar, chunksize).get()

File "C:\Users\HP\AppData\Local\conda\conda\envs\myenv\lib\multiprocessing\pool.py", line 657, in get
raise self._value

TypeError: unhashable type: 'list'

[ShichenXie]

are you using Windows OS?

[Anaxximandar]

Yes It works with pip install scorecardpy нед, 29. сеп 2019. у 16:10 Shichen <notifications@github.com> је написао/ла:

…

are you using Windows OS? — You are receiving this because you commented. Reply to this email directly, view it on GitHub <#34?email_source=notifications&email_token=AGJYL4Y7HVEOKEQYGAWCEPLQMCZOPA5CNFSM4I2GYZBKYY3PNVWWK3TUL52HS4DFVREXG43VMVBW63LNMVXHJKTDN5WW2ZLOORPWSZGOD73VZUY#issuecomment-536304851>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AGJYL44TNTHG2YKONZKNMNDQMCZOPANCNFSM4I2GYZBA> .

[laurencedaycf]

Hi @ShichenXie! Just wondering if Windows OS is the issue with this?
I get this same error with woebin_ply, and I am using Windows OS. Will using e.g. Ubuntu/Mac Fix this for me?

[ShichenXie]

which version of python are you using. The scorecardpy only supports python 3.6 or below.

[laurencedaycf]

@ShichenXie I have tested on python versions 3.7.4, 3.6.9, and 3.5.6 and I get errors for all three of them

Here is the full output

[INFO] converting into woe values ...
multiprocessing.pool.RemoteTraceback:
"""
Traceback (most recent call last):
File "C:\Users\Laurence.Day.conda\envs\scorecard_py_3_5\lib\multiprocessing\pool.py", line 119, in worker
result = (True, func(*args, **kwds))
File "C:\Users\Laurence.Day.conda\envs\scorecard_py_3_5\lib\multiprocessing\pool.py", line 47, in starmapstar
return list(itertools.starmap(args[0], args[1]))
File "C:\Users\Laurence.Day.conda\envs\scorecard_py_3_5\lib\site-packages\scorecardpy\woebin.py", line 1020, in woepoints_ply1
dtx_suffix = pd.merge(dtx, binx, how='left', on=x_i).sort_values('rowid')
File "C:\Users\Laurence.Day.conda\envs\scorecard_py_3_5\lib\site-packages\pandas\core\reshape\merge.py", line 83, in merge
return op.get_result()
File "C:\Users\Laurence.Day.conda\envs\scorecard_py_3_5\lib\site-packages\pandas\core\reshape\merge.py", line 642, in get_result
join_index, left_indexer, right_indexer = self._get_join_info()
File "C:\Users\Laurence.Day.conda\envs\scorecard_py_3_5\lib\site-packages\pandas\core\reshape\merge.py", line 859, in _get_join_info
(left_indexer, right_indexer) = self._get_join_indexers()
File "C:\Users\Laurence.Day.conda\envs\scorecard_py_3_5\lib\site-packages\pandas\core\reshape\merge.py", line 838, in _get_join_indexers
self.left_join_keys, self.right_join_keys, sort=self.sort, how=self.how
File "C:\Users\Laurence.Day.conda\envs\scorecard_py_3_5\lib\site-packages\pandas\core\reshape\merge.py", line 1304, in _get_join_indexers
llab, rlab, shape = map(list, zip(*map(fkeys, left_keys, right_keys)))
File "C:\Users\Laurence.Day.conda\envs\scorecard_py_3_5\lib\site-packages\pandas\core\reshape\merge.py", line 1903, in _factorize_keys
rlab = rizer.factorize(rk)
File "pandas/_libs/hashtable.pyx", line 77, in pandas._libs.hashtable.Factorizer.factorize
File "pandas/_libs/hashtable_class_helper.pxi", line 1805, in pandas._libs.hashtable.PyObjectHashTable.get_labels
File "pandas/_libs/hashtable_class_helper.pxi", line 1718, in pandas._libs.hashtable.PyObjectHashTable._unique
TypeError: unhashable type: 'list'
"""

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
File "test_program.py", line 41, in
train_woe = sc.woebin_ply(train, bins)
File "C:\Users\Laurence.Day.conda\envs\scorecard_py_3_5\lib\site-packages\scorecardpy\woebin.py", line 1132, in woebin_ply
dat_suffix = pool.starmap(woepoints_ply1, args)
File "C:\Users\Laurence.Day.conda\envs\scorecard_py_3_5\lib\multiprocessing\pool.py", line 274, in starmap
return self._map_async(func, iterable, starmapstar, chunksize).get()
File "C:\Users\Laurence.Day.conda\envs\scorecard_py_3_5\lib\multiprocessing\pool.py", line 644, in get
raise self._value
TypeError: unhashable type: 'list'

[ShichenXie]

It should be the multiprocessing donot supporting windows OS. Try to set no_cores as 1 when using windows, or change to macOS / Linux. I will fix this bug in few days.