kind: start
plm: 2.5 (20141031)
java: 1.8.0_25 (VM: Java HotSpot(TM) Client VM; version: 25.25-b02)
os: Windows 7 (version: 6.1; arch: x86)
kind: switched
switchto: recursion.lessons.recursion.tree.Tree
lang: Python
exo: recursion.lessons.recursion.square.FourSquare
outcome: pass