Usage: Also updated pypi to latest, see https://pypi.python.org/pypi?:action=display&name=pybullet&version=0.1.7 Here are a few options for Mac OSX + Anaconda: 1) In the root of the Bullet Physics SDK source tree, run CFLAGS="-DB3_NO_PYTHON_FRAMEWORK" python setup.py install 2) cmake, add the flag -DBUILD_PYBULLET_MAC_USE_PYTHON_FRAMEWORK=OFF 3) Globally, just use pip or pip3: CFLAGS="-DB3_NO_PYTHON_FRAMEWORK" pip install pybullet Option (3) may have an out-of-date pybullet/bullet version.