import maya.cmds as cmds

def create_nurbs_curve(name):
    # Create a NURBS curve
    curve = cmds.curve(d=1, p=[(-1, 0, 0), (1, 0, 0)], k=[0, 1], name=name)
    return curve

def add_to_control_set(curve, control_set):
    # Add the curve to the control set
    cmds.sets(curve, add=control_set)

# Create a control set
control_set = cmds.sets(name="body")

# Create NURBS curves
curve1 = create_nurbs_curve("Curve1")
curve2 = create_nurbs_curve("Curve2")

# Add curves to the control set
add_to_control_set(curve1, control_set)
add_to_control_set(curve2, control_set)