Merge pull request #2061 from recommenders-team/andreas/fix_pandera

Fix pandera in Python 3.7

Author: miguelgfierro

setup.py

@@ -46,7 +46,8 @@
     "cornac>=1.1.2,<1.15.2;python_version<='3.7'",
     "cornac>=1.15.2,<2;python_version>='3.8'",  # After 1.15.2, Cornac requires python 3.8
     "retrying>=1.3.3",
-    "pandera[strategies]>=0.6.5",  # For generating fake datasets
+    "pandera[strategies]>=0.6.5,<0.18;python_version<='3.7'",  # For generating fake datasets
+    "pandera[strategies]>=0.6.5;python_version>='3.8'",
     "scikit-surprise>=1.0.6",
     "hyperopt>=0.1.2,<1",
     "ipykernel>=4.6.1,<7",