symd.py 文件源码

def print_impacted_modules(single_node=None, json_out=None):
    """
     For each module, print a list of modules that depend on the module, i.e.
     modules that would be impacted by a change in this module. The function
     shows all levels of dependency, not just the immediately impacted
     modules.  If the json_out argument is not None, then the output will be
     recorded there rather than printed on stdout.
    :return:
    """
    if json_out is None:
        print('\n===Impacted Modules===')
    else:
        json_out['impacted_modules'] = {}
    for node_name in G.nodes_iter():
        if single_node and (node_name!=single_node):
            continue
        ancestors = nx.ancestors(G, node_name)
        if len(ancestors) > 0:
            if json_out is None:
                print(augment_format_string(node_name, '\n%s:') % node_name)
            else:
                json_out['impacted_modules'][node_name] = []
            for a in ancestors:
                if json_out is None:
                    print(augment_format_string(a, '    %s') % a)
                else:
                    json_out['impacted_modules'][node_name].append(a)