def popen3(cmd, bufsize=-1, mode='t'):
        w, r, e = os.popen3(cmd, mode, bufsize)
        return r, w, e
for compatibility with Attribute class
dataset/ETHPy150Open azoft-dev-team/imagrium/env/Lib/popen2.py/popen3--crossover with--dataset/ETHPy150Open CountZer0/PipelineConstructionSet/python/maya/site-packages/pymel-1.0.3/pymel/core/nodetypes.py/DependNode.node