user: Describe Surface Operators from the Blender manual or Python API, including usage steps and snippets.

assistant: # Surface Operators

bpy.ops.surface.primitive_nurbs_surface_circle_add(*\**, *radius=1.0*, *enter_editmode=False*, *align='WORLD'*, *location=(0.0, 0.0, 0.0)*, *rotation=(0.0, 0.0, 0.0)*, *scale=(0.0, 0.0, 0.0)*)
:   Construct a Nurbs surface Circle

    Parameters:
    :   - **radius** (*float in* *[**0**,* *inf**]**,* *(**optional**)*) – Radius
        - **enter_editmode** (*boolean**,* *(**optional**)*) – Enter Edit Mode, Enter edit mode when adding this object
        - **align** (enum in [`'WORLD'`, `'VIEW'`, `'CURSOR'`], (optional)) –

          Align, The alignment of the new object

          - `WORLD`
            World – Align the new object to the world.
          - `VIEW`
            View – Align the new object to the view.
          - `CURSOR`
            3D Cursor – Use the 3D cursor orientation for the new object.
        - **location** ([`mathutils.Vector`](mathutils.html#mathutils.Vector "mathutils.Vector") of 3 items in [-inf, inf], (optional)) – Location, Location for the newly added object
        - **rotation** ([`mathutils.Euler`](mathutils.html#mathutils.Euler "mathutils.Euler") rotation of 3 items in [-inf, inf], (optional)) – Rotation, Rotation for the newly added object
        - **scale** ([`mathutils.Vector`](mathutils.html#mathutils.Vector "mathutils.Vector") of 3 items in [-inf, inf], (optional)) – Scale, Scale for the newly added object

bpy.ops.surface.primitive_nurbs_surface_curve_add(*\**, *radius=1.0*, *enter_editmode=False*, *align='WORLD'*, *location=(0.0, 0.0, 0.0)*, *rotation=(0.0, 0.0, 0.0)*, *scale=(0.0, 0.0, 0.0)*)
:   Construct a Nurbs surface Curve

    Parameters:
    :   - **radius** (*float in* *[**0**,* *inf**]**,* *(**optional**)*) – Radius
        - **enter_editmode** (*boolean**,* *(**optional**)*) – Enter Edit Mode, Enter edit mode when adding this object
        - **align** (enum in [`'WORLD'`, `'VIEW'`, `'CURSOR'`], (optional)) –

          Align, The alignment of the new object

          - `WORLD`
            World – Align the new object to the world.
          - `VIEW`
            View – Align the new object to the view.
          - `CURSOR`
            3D Cursor – Use the 3D cursor orientation for the new object.
        - **location** ([`mathutils.Vector`](mathutils.html#mathutils.Vector "mathutils.Vector") of 3 items in [-inf, inf], (optional)) – Location, Location for the newly added object
        - **rotation** ([`mathutils.Euler`](mathutils.html#mathutils.Euler "mathutils.Euler") rotation of 3 items in [-inf, inf], (optional)) – Rotation, Rotation for the newly added object
        - **scale** ([`mathutils.Vector`](mathutils.html#mathutils.Vector "mathutils.Vector") of 3 items in [-inf, inf], (optional)) – Scale, Scale for the newly added object

bpy.ops.surface.primitive_nurbs_surface_cylinder_add(*\**, *radius=1.0*, *enter_editmode=False*, *align='WORLD'*, *location=(0.0, 0.0, 0.0)*, *rotation=(0.0, 0.0, 0.0)*, *scale=(0.0, 0.0, 0.0)*)
:   Construct a Nurbs surface Cylinder

    Parameters:
    :   - **radius** (*float in* *[**0**,* *inf**]**,* *(**optional**)*) – Radius
        - **enter_editmode** (*boolean**,* *(**optional**)*) – Enter Edit Mode, Enter edit mode when adding this object
        - **align** (enum in [`'WORLD'`, `'VIEW'`, `'CURSOR'`], (optional)) –

          Align, The alignment of the new object

          - `WORLD`
            World – Align the new object to the world.
          - `VIEW`
            View – Align the new object to the view.
          - `CURSOR`
            3D Cursor – Use the 3D cursor orientation for the new object.
        - **location** ([`mathutils.Vector`](mathutils.html#mathutils.Vector "mathutils.Vector") of 3 items in [-inf, inf], (optional)) – Location, Location for the newly added object
        - **rotation** ([`mathutils.Euler`](mathutils.html#mathutils.Euler "mathutils.Euler") rotation of 3 items in [-inf, inf], (optional)) – Rotation, Rotation for the newly added object
        - **scale** ([`mathutils.Vector`](mathutils.html#mathutils.Vector "mathutils.Vector") of 3 items in [-inf, inf], (optional)) – Scale, Scale for the newly added object

bpy.ops.surface.primitive_nurbs_surface_sphere_add(*\**, *radius=1.0*, *enter_editmode=False*, *align='WORLD'*, *location=(0.0, 0.0, 0.0)*, *rotation=(0.0, 0.0, 0.0)*, *scale=(0.0, 0.0, 0.0)*)
:   Construct a Nurbs surface Sphere

    Parameters:
    :   - **radius** (*float in* *[**0**,* *inf**]**,* *(**optional**)*) – Radius
        - **enter_editmode** (*boolean**,* *(**optional**)*) – Enter Edit Mode, Enter edit mode when adding this object
        - **align** (enum in [`'WORLD'`, `'VIEW'`, `'CURSOR'`], (optional)) –

          Align, The alignment of the new object

          - `WORLD`
            World – Align the new object to the world.
          - `VIEW`
            View – Align the new object to the view.
          - `CURSOR`
            3D Cursor – Use the 3D cursor orientation for the new object.
        - **location** ([`mathutils.Vector`](mathutils.html#mathutils.Vector "mathutils.Vector") of 3 items in [-inf, inf], (optional)) – Location, Location for the newly added object
        - **rotation** ([`mathutils.Euler`](mathutils.html#mathutils.Euler "mathutils.Euler") rotation of 3 items in [-inf, inf], (optional)) – Rotation, Rotation for the newly added object
        - **scale** ([`mathutils.Vector`](mathutils.html#mathutils.Vector "mathutils.Vector") of 3 items in [-inf, inf], (optional)) – Scale, Scale for the newly added object

bpy.ops.surface.primitive_nurbs_surface_surface_add(*\**, *radius=1.0*, *enter_editmode=False*, *align='WORLD'*, *location=(0.0, 0.0, 0.0)*, *rotation=(0.0, 0.0, 0.0)*, *scale=(0.0, 0.0, 0.0)*)
:   Construct a Nurbs surface Patch

    Parameters:
    :   - **radius** (*float in* *[**0**,* *inf**]**,* *(**optional**)*) – Radius
        - **enter_editmode** (*boolean**,* *(**optional**)*) – Enter Edit Mode, Enter edit mode when adding this object
        - **align** (enum in [`'WORLD'`, `'VIEW'`, `'CURSOR'`], (optional)) –

          Align, The alignment of the new object

          - `WORLD`
            World – Align the new object to the world.
          - `VIEW`
            View – Align the new object to the view.
          - `CURSOR`
            3D Cursor – Use the 3D cursor orientation for the new object.
        - **location** ([`mathutils.Vector`](mathutils.html#mathutils.Vector "mathutils.Vector") of 3 items in [-inf, inf], (optional)) – Location, Location for the newly added object
        - **rotation** ([`mathutils.Euler`](mathutils.html#mathutils.Euler "mathutils.Euler") rotation of 3 items in [-inf, inf], (optional)) – Rotation, Rotation for the newly added object
        - **scale** ([`mathutils.Vector`](mathutils.html#mathutils.Vector "mathutils.Vector") of 3 items in [-inf, inf], (optional)) – Scale, Scale for the newly added object

bpy.ops.surface.primitive_nurbs_surface_torus_add(*\**, *radius=1.0*, *enter_editmode=False*, *align='WORLD'*, *location=(0.0, 0.0, 0.0)*, *rotation=(0.0, 0.0, 0.0)*, *scale=(0.0, 0.0, 0.0)*)
:   Construct a Nurbs surface Torus

    Parameters:
    :   - **radius** (*float in* *[**0**,* *inf**]**,* *(**optional**)*) – Radius
        - **enter_editmode** (*boolean**,* *(**optional**)*) – Enter Edit Mode, Enter edit mode when adding this object
        - **align** (enum in [`'WORLD'`, `'VIEW'`, `'CURSOR'`], (optional)) –

          Align, The alignment of the new object

          - `WORLD`
            World – Align the new object to the world.
          - `VIEW`
            View – Align the new object to the view.
          - `CURSOR`
            3D Cursor – Use the 3D cursor orientation for the new object.
        - **location** ([`mathutils.Vector`](mathutils.html#mathutils.Vector "mathutils.Vector") of 3 items in [-inf, inf], (optional)) – Location, Location for the newly added object
        - **rotation** ([`mathutils.Euler`](mathutils.html#mathutils.Euler "mathutils.Euler") rotation of 3 items in [-inf, inf], (optional)) – Rotation, Rotation for the newly added object
        - **scale** ([`mathutils.Vector`](mathutils.html#mathutils.Vector "mathutils.Vector") of 3 items in [-inf, inf], (optional)) – Scale, Scale for the newly added object