xgboost/tests/python/test_pickling.py
Jiaming Yuan 7e72a12871
Don't set_params at the end of set_state. (#4947)
* Don't set_params at the end of set_state.

* Also fix another issue found in dask prediction.

* Add note about prediction.

Don't support other prediction modes at the moment.
2019-10-15 10:08:26 -04:00

49 lines
907 B
Python

import pickle
import numpy as np
import xgboost as xgb
import os
kRows = 100
kCols = 10
def generate_data():
X = np.random.randn(kRows, kCols)
y = np.random.randn(kRows)
return X, y
def test_model_pickling():
xgb_params = {
'verbosity': 0,
'nthread': 1,
'tree_method': 'hist'
}
X, y = generate_data()
dtrain = xgb.DMatrix(X, y)
bst = xgb.train(xgb_params, dtrain)
dump_0 = bst.get_dump(dump_format='json')
assert dump_0
filename = 'model.pkl'
with open(filename, 'wb') as fd:
pickle.dump(bst, fd)
with open(filename, 'rb') as fd:
bst = pickle.load(fd)
with open(filename, 'wb') as fd:
pickle.dump(bst, fd)
with open(filename, 'rb') as fd:
bst = pickle.load(fd)
assert bst.get_dump(dump_format='json') == dump_0
if os.path.exists(filename):
os.remove(filename)