def infix_handle(tokens):
    """Process infix calls."""
    func, args = get_infix_items(tokens, callback=infix_handle)
    return "(" + func + ")(" + ", ".join(args) + ")"
def infix_handle ( tokens ) : func , args = get_infix_items ( tokens , callback = infix_handle ) return "(" + func + ")(" + ", " . join ( args ) + ")"
Process infix calls.