* https://github.com/pandas-dev/pandas/issues/11050 * https://github.com/pandas-dev/pandas/issues/17092 * https://github.com/numpy/numpy/issues/6732 * https://github.com/liushuchun/pynote/tree/master/slots_magic (use case) * https://github.com/jni/streaming-talk (use case) * https://github.com/ianozsvald/ipython_memory_usage/blob/master/src/ipython_memory_usage/examples/example_usage_np_pd.ipynb (my example for pandas del vs drop via Jamie Brunning)