/usr/local/lib/python2.7/dist-packages/numdifftools/limits.py:182: FutureWarning: arrays to stack must be passed as a "sequence" type such as list or tuple. Support for non-sequence iterables such as generators is deprecated as of NumPy 1.16 and will raise an error in the future. f_del = np.vstack(list(np.ravel(r)) for r in sequence) /usr/local/lib/python2.7/dist-packages/numdifftools/limits.py:184: FutureWarning: arrays to stack must be passed as a "sequence" type such as list or tuple. Support for non-sequence iterables such as generators is deprecated as of NumPy 1.16 and will raise an error in the future. for step in steps) {"usertime":0.41,"memmax":63532,"memavg":0}