numpy.ndarray.__len__
- 
ndarray.__len__() <==> len(x)
    © 2008–2016 NumPy Developers
Licensed under the NumPy License.
    https://docs.scipy.org/doc/numpy-1.11.0/reference/generated/numpy.ndarray.__len__.html
  
ndarray.__len__() <==> len(x) 
    © 2008–2016 NumPy Developers
Licensed under the NumPy License.
    https://docs.scipy.org/doc/numpy-1.11.0/reference/generated/numpy.ndarray.__len__.html