syntax fixes in shape.py
syntax fixes in shape.py

gentnerlab/pyoperant,theilmbh/pyoperant,MarvinT/pyoperant,MarvinT/pyoperant,theilmbh/pyoperant,theilmbh/pyoperant,gentnerlab/pyoperant,theilmbh/pyoperant,MarvinT/pyoperant,opyrant/opyrant,gentnerlab/pyoperant,opyrant/opyrant,gentnerlab/pyoperant