To produce a Close Contour operation in the Main Menu select Repair - > Close Contour.

This operation closes an open contour and modifies the underlying face (if needed) in accordance with user specified mode:

By common vertex – a vertex is created between the end points of the contour and its tolerance is increased to a value of the gap between the ends of the contour;
By new edge – a new edge is inserted between the end points of the contour.

This operation is available in OCC Viewer only.

The Result will be a GEOM_Object.

TUI Command: geompy.CloseContour(Shape, Wires, IsCommonVertex), where Shape is a shape to be processed, Wires is a list of edges or wires ID's which has to be closed within the shape (if the list contains only one element = -1, the shape itself is considered as a wire), IsCommonVertex if this parameter is True a closure has to be done by creation of a common vertex, otherwise an edge is added between the end vertices.
Arguments: Name + 1 shape + contour (Wire, or a set of Edges) + mode of closure (by vertex or by edge)

Our TUI Scripts provide you with useful examples of the use of Repairing Operations.