Refine lib -> xautodl

tests/test_math_adv.py

@@ -3,16 +3,10 @@
 #####################################################
 # pytest tests/test_math_adv.py -s                  #
 #####################################################
-import sys, random
 import unittest
 import pytest
-from pathlib import Path
-
-lib_dir = (Path(__file__).parent / ".." / "lib").resolve()
-print("library path: {:}".format(lib_dir))
-if str(lib_dir) not in sys.path:
-    sys.path.insert(0, str(lib_dir))
 
+from xautodl import datasets
 from datasets.math_core import QuadraticFunc
 from datasets.math_core import ConstantFunc
 from datasets.math_core import DynamicLinearFunc