<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def show_dependencies(self, stream=sys.stdout):
 """Writes to the given stream the ASCII representation of the dependency tree."""

        def child_iter(node):
            return [d.node for d in node.deps]

        def text_str(node):
            return colored(str(node), color=node.status.color_opts["color"])

        for task in self.iflat_tasks():
            print(draw_tree(task, child_iter, text_str), file=stream)