我有一个解析Maven依赖树并按需要组织数据的程序。我不确定如何正确索引数据以返回它。这是从Maven依赖树解析器输出的数据的摘要(使用pprint)。
[{'name': 'org.antlr'},
{'type': 'dependency'},
{'metadata': [{'groupId': 'org.antlr'},
{'artifactId': 'antlr4',
'children': [({'name': 'org.antlr'},
{'type': 'dependency'},
{'metadata': [{'groupId': 'org.antlr'},
{'artifactId': 'antlr4-runtime'}]}),
({'name': 'org.antlr'},
{'type': 'dependency'},
{'metadata': [{'groupId': 'org.antlr'},
{'artifactId': 'antlr-runtime'}]}),
({'name': 'org.antlr'},
{'type': 'dependency'},
{'metadata': [{'groupId': 'org.antlr'},
{'artifactId': 'ST4'}]}),
({'name': 'org.abego.treelayout'},
{'type': 'dependency'},
{'metadata': [{'groupId': 'org.abego.treelayout'},
{'artifactId': 'org.abego.treelayout.core'}]}),
({'name': 'org.glassfish'},
{'type': 'dependency'},
{'metadata': [{'groupId': 'org.glassfish'},
{'artifactId': 'javax.json'}]}),
({'name': 'com.ibm.icu'},
{'type': 'dependency'},
{'metadata': [{'groupId': 'com.ibm.icu'},
{'artifactId': 'icu4j'}]})]}]}]
我尝试过:
pprint([name for name in parsedTree[0]])
或
pprint(parsedTree[0:1])
或其中的变体,其中parsedTree是上面显示的输出。
最终,我只想使用递归或生成器仅返回每个名称,以便为API调用准备此信息。我不知道如何单独索引和提取名称(没有元数据或类型)。有没有办法做到这一点? 先感谢您。 我想分别获取每个名称,以便如果我执行Beans.name之类的操作,它将返回
org.antlr
org.antlr
org.antlr
org.antlr
org.antlr
org.abego.treelayout
org.glassfish
com.ibm.icu
答案 0 :(得分:2)
我以前的回答是错误的,我认为这应该起作用:
def get_all_names(parsed_tree, li):
if not isinstance(parsed_tree, list) and not isinstance(parsed_tree, tuple):
return li
def get_all_names_dict(dictionary, li):
if not isinstance(dictionary, dict):
get_all_names(dictionary, li)
return
for key in dictionary.keys():
if key == 'name':
li.append(dictionary[key])
elif isinstance(dictionary[key], dict):
get_all_names_dict(dictionary[key], li)
elif isinstance(dictionary[key], list):
get_all_names(dictionary[key], li)
elif isinstance(dictionary[key], tuple):
get_all_names(dictionary[key], tuple)
for val in parsed_tree:
get_all_names_dict(val, li)
return li
print('\n'.join(get_all_names(parsedTree, [])))
对不起,等待中!
答案 1 :(得分:0)
您只需要学习字典,元组和字典,即可使用关键字“名称”搜索字典。如果您希望在这里使用其他类型,请将它们包括在相关的“实例”检查中。
def get_nested_name(tree):
names = []
if isinstance(tree, (list, tuple)):
for branch in tree:
names.extend(get_nested_name(branch))
elif isinstance(tree, dict):
try:
names.append(tree['name'])
except KeyError:
# this dict dont have a "name" key, lets ignore it
pass
branches = filter(lambda x: isinstance(x, (list, dict, tuple)), tree.values())
for b in branches:
names.extend(get_nested_name(b))
return names