Unable to cast <class 'numpy.ndarray'> to std::vector<float>

[tomoveu]

Does pybind11 lack support for converting numpy arrays to std::vector (of floats) ?

I have tried converting to list (success) and then to vector (fails), and so many things. I tried this direct conversion and it also fails with the error below:

auto vec = py::cast<std::vector<float>>(args[0]);

error:

Unable to cast Python instance of type <class 'numpy.ndarray'> to C++ type 'std::vector<float, std::allocator<float> >

args is a tuple list of:

• numpy array
• float
• float
  and looks something like this:

 [[[[ 3.375    -3.515625]
   [ 4.40625  -5.96875 ]
   [ 6.03125  -7.03125 ]
   ...
        [[ 6.15625 , -6.96875 ],
         [ 4.21875 , -7.46875 ],
         [ 4.34375 , -6.40625 ],
         ...,
           [ 4.65625  -7.      ]
   [ 5.375    -5.65625 ]]]]
0.5466139912605286
2033.586669921875