此问题与this one有关。这一次我想更进一步。给定一个字典,如:使用嵌套字典创建多索引`DataFrame`
dd = {0: {"russell": {"score": numpy.random.rand(), "ping": numpy.random.randint(10, 100)},
"cantor": {"score": numpy.random.rand(), "ping": numpy.random.randint(10, 100)},
"godel": {"score": numpy.random.rand(), "ping": numpy.random.randint(10, 100)}},
1: {"russell": {"score": numpy.random.rand(), "ping": numpy.random.randint(10, 100)},
"cantor": {"score": numpy.random.rand(), "ping": numpy.random.randint(10, 100)},
"godel": {"score": numpy.random.rand(), "ping": numpy.random.randint(10, 100)}}}
或类似的列表:
ll = [{"russell": {"score": numpy.random.rand(), "ping": numpy.random.randint(10, 100)},
"cantor": {"score": numpy.random.rand(), "ping": numpy.random.randint(10, 100)},
"godel": {"score": numpy.random.rand(), "ping": numpy.random.randint(10, 100)}},
{"russell": {"score": numpy.random.rand(), "ping": numpy.random.randint(10, 100)},
"cantor": {"score": numpy.random.rand(), "ping": numpy.random.randint(10, 100)},
"godel": {"score": numpy.random.rand(), "ping": numpy.random.randint(10, 100)}}]
我想构造一个DataFrame
,如:
russell godel cantor
score ping score ping score ping
0 0.17473916938994682 40 0.3443303845926545 47 0.43576522521017247 42
1 0.7341005512329682 22 0.14682222267827938 81 0.5662517436162526 59
这里我们可以看到列索引是MultiIndex
。有没有办法实现这一点?如果我尝试pandas.DataFrame.from_dict(dd, orient="index")
或pandas.DataFrame(ll)
然后我得到:
russell godel cantor
0 {'score': 0.17473916938994682, 'ping': 40} {'score': 0.3443303845926545, 'ping': 47} {'score': 0.43576522521017247, 'ping': 42}
1 {'score': 0.7341005512329682, 'ping': 22} {'score': 0.14682222267827938, 'ping': 81} {'score': 0.5662517436162526, 'ping': 59}
这不是我想要的。
你亲自帮助我很多熊猫。非常感谢你。 – Ray