fixed Package.__str__ method

Author: fracpete

CHANGES.rst

@@ -5,6 +5,7 @@ Changelog
 ------------------
 
 - switched to `python-javabridge`, the new name (fork?) of the `javabridge` library
+- `Package.__str__` (`weka.core.packages` module) method now returns a string rather than printing the name/version
 - ...
 
 

python/weka/core/packages.py

@@ -125,7 +125,7 @@ def __str__(self):
         :return: the name/version
         :rtype: str
         """
-        print(self.name + "/" + self.version)
+        return self.name + "/" + self.version
 
 
 class PackageConstraint(JavaObject):