Changed the pickle reference to JSON reference

bob/learn/linear/data/linear-test.json

+{"activation": 1, "biases": [0.3, -3.0], "input_div": [0.5, 1.0, 1.0], "input_sub": [0.0, 0.5, 0.5], "weights": [[0.4, 0.1], [0.4, 0.2], [0.2, 0.7]]}
\ No newline at end of file

bob/learn/linear/test.py

@@ -27,7 +27,7 @@ import bob.io.base
 from bob.learn.activation import HyperbolicTangent, Identity
 from bob.io.base import HDF5File
 from bob.io.base.test_utils import datafile
-
+import json
 
 def F(f):
     """Returns the test file on the "data" subdirectory"""
@@ -36,12 +36,12 @@ def F(f):
     )
 
 
-MACHINE = F("linear-test.pickle")
+MACHINE = F("linear-test.json")
 
 
 def load_machine():
-    with open(MACHINE, "rb") as machine_pickle:
-        return pickle.load(machine_pickle)
+    with open(MACHINE, "r") as machine_json:
+        return json.load(machine_json)
 
 
 def test_initialization():

[Tiago de Freitas Pereira]

Done @amohammadi ;-)

[Amir MOHAMMADI]

Thank you!