急！！！如何把已有的多条json纪录提取出有用信息写到新的

列表解析做个条件过滤就可以了
>>> orig = '''{"name":"lisa", "number":1, "exam1":100, "exam2":90, "exam3":93}
{"name":"nick", "number":2, "exam1":90, "exam2":100, "exam3":84}
{"name":"marry", "number":3, "exam1":92, "exam2":100, "exam3":73}'''
>>> for line in orig.split('\n'):
orig_doc = json.loads(line)
new_doc = { key: orig_doc[key] for key in orig_doc if key in ("name", "number", "exam3") }
print(json.dumps(new_doc))
{"name": "lisa", "number": 1, "exam3": 93}
{"name": "nick", "number": 2, "exam3": 84}
{"name": "marry", "number": 3, "exam3": 73}
>>>

届上问题，如果我的原始记录每条的格式是下面这个样子：
｛“name”：“lisa”,
"number":1,
"exams": {
"exam1":[ "date": xx.xx, "score": 100],
"exam2":[ "date": xx.xx, "score": 90],
"exam3":[ "date": xx.xx, "score": 93],
}
}
。。。。
那我要怎么条件过滤提取出exam3里的score项？
@nadesico19

172965579,叫我们的python群，一起做项目

我就是过来看看有没有人给你顶贴