docstr: Returns the number of independent generators of G_2
code: def basis(self):
      """
      Returns the number of independent generators of G_2
      """
      return 14
  
file_path: sympy/sympy/liealgebras/type_g.py
imports: from .cartan_type import Standard_Cartan
  from sympy.core.backend import Matrix
label_desc: Use image node_id 7 for calling the TypeG obj's underlying member method code with example usage: obj.basis() and returns: int