VAO and VBO not working.

[hsunteik]

After fixing this error ,another error occur.
the error name is NullFunctionError,it says glGenVertexArrays method is undefined,so i checked by doing
print(bool(GL.glGenVertexArrays))
and it returns false,so
i just downloaded GPU caps viewer to check my system supported version.

software
pyopengl version:3.1

gpu/hardware
gpu opengl version:4.0
glsl version:4.0
renderer:Intel® HD Graphic 4400
GPU opengl extension GL_ARB_VAO version:2.1
GPU opengl extension GL_ARB_VBO version:1.5
etc
should i uninstall pyopengl and download a lower version one?
what should i do now?