dominik@dominik-PC-Ubuntu:~$ mlnlearn
mlnlearn.py (1077): update_config
==================
PRAC LEARNING TOOL
==================

loaded 50 database(s).
Parameter:                   Value:
---------------------------  -----------------------------------------------
db                           50 Databases
discr_preds                  0
epreds
grammar                      PRACGrammar
ignore_unknown_preds         0
ignore_zero_weight_formulas  1
incremental                  0
logic                        FirstOrderLogic
method                       CLL
mln                          <pracmln.mln.base.MLN object at 0x7f91b6e586d0>
multicore                    1
output_filename              learnt.cll.scenes-new-object-detection.mln
params
pattern
prior_mean                   0
prior_stdev                  10
profile                      0
qpreds
save                         1
shuffle                      0
use_initial_weights          0
use_prior                    1
verbose                      1
setup learners...
[                                                                                                                                                                                               ]   0.000 % Traceback (most recent call last):
  File "/home/dominik/.local/lib/python2.7/site-packages/pracmln/utils/multicore.py", line 27, in __call__
    result = self.func(*args,**kwargs)
  File "/home/dominik/.local/lib/python2.7/site-packages/pracmln/mln/learning/multidb.py", line 38, in _setup_learner
    checkmem()
  File "/home/dominik/.local/lib/python2.7/site-packages/pracmln/utils/multicore.py", line 67, in checkmem
    if float(psutil.virtual_memory().percent) > 75.:
AttributeError: 'module' object has no attribute 'virtual_memory'
2018-04-19 17:46:03 -  ERROR   - Error in child process. Terminating pool...
Traceback (most recent call last):
  File "/home/dominik/.local/lib/python2.7/site-packages/pracmln/utils/multicore.py", line 27, in __call__
    result = self.func(*args,**kwargs)
  File "/home/dominik/.local/lib/python2.7/site-packages/pracmln/mln/learning/multidb.py", line 38, in _setup_learner
    checkmem()
  File "/home/dominik/.local/lib/python2.7/site-packages/pracmln/utils/multicore.py", line 67, in checkmem
    if float(psutil.virtual_memory().percent) > 75.:
AttributeError: 'module' object has no attribute 'virtual_memory'
Traceback (most recent call last):
  File "/home/dominik/.local/lib/python2.7/site-packages/pracmln/mlnlearn.py", line 1167, in learn
    result = learning.run()
  File "/home/dominik/.local/lib/python2.7/site-packages/pracmln/mlnlearn.py", line 406, in run
    mlnlearnt = mln.learn(dbs, self.method, **params)
  File "/home/dominik/.local/lib/python2.7/site-packages/pracmln/mln/base.py", line 424, in learn
    learner = MultipleDatabaseLearner(newmln, dbs, method, **params)
  File "/home/dominik/.local/lib/python2.7/site-packages/pracmln/mln/learning/multidb.py", line 86, in __init__
    raise e
AttributeError: 'module' object has no attribute 'virtual_memory'