I want to calculate eigenvectors and eigenvalues for real symmetric matrix or Hermitian matrix. Can I use this: https://qiskit.org/documentation/api/qiskit.aqua.components.eigs.Eigenvalues.html
If that is all you want to do then SciPy is really the way to go. Indeed, qiskit just wraps that functionality when requesting a classical answer. In SciPy you can use scipy.linalg.eig. You can find examples of using this function in the documentation.