我有以下示例数据框：
df = pd.DataFrame(data = {'RecordID' : [1,1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,5,5,5,5], 'DisplayLabel' : ['Source','Test','Value 1','Value 2','Value3','Source','Test','Value 1','Value 2','Source','Test','Value 1','Value 2','Source','Test','Value 1','Value 2','Source','Test','Value 1','Value 2'],
'Value' : ['Web','Logic','S','I','Complete','Person','Voice','>20','P','Mail','OCR','A','I','Dictation','Understandable','S','I','Web','Logic','R','S']})
创建此数据框：
+-------+----------+---------------+----------------+
| Index | RecordID | Display Label | Value |
+-------+----------+---------------+----------------+
| 0 | 1 | Source | Web |
| 1 | 1 | Test | Logic |
| 2 | 1 | Value 1 | S |
| 3 | 1 | Value 2 | I |
| 4 | 1 | …我正在尝试从appengine数据存储区提高当前查询的效率.目前,我正在使用同步方法:
class Hospital(ndb.Model):
name = ndb.StringProperty()
buildings= ndb.KeyProperty(kind=Building,repeated=True)
class Building(ndb.Model):
name = ndb.StringProperty()
rooms= ndb.KeyProperty(kind=Room,repeated=True)
class Room(ndb.Model):
name = ndb.StringProperty()
beds = ndb.KeyProperty(kind=Bed,repeated=True)
class Bed(ndb.Model):
name = ndb.StringProperty()
.....
目前我经历了愚蠢的事情:
currhosp = ndb.Key(urlsafe=valid_hosp_key).get()
nbuilds = ndb.get_multi(currhosp.buildings)
for b in nbuilds:
rms = ndb.get_multi(b.rooms)
for r in rms:
bds = ndb.get_multi(r.beds)
for b in bds:
do something with b object
我想使用get_multi_async将其转换为更快的查询
我的困难在于如何做到这一点？有任何想法吗？
最好的乔恩
我试图在pandas中获得类似的excel功能,主要是类型行为的百分比.使用以下数据:
{'A': ['a', 'b', 'b', 'a', 'a', 'a', 'b', 'b', 'b', 'a', 'a', 'a', 'b'],
'C': ['e', 'e', 'e', 'f', 'f', 'f', 'f', 'f', 'f', 'f', 'f', 'e', 'e'],
'B': ['c', 'c', 'c', 'c', 'c', 'd', 'd', 'd', 'd', 'd', 'c', 'c', 'd'],
'D': ['g', 'g', 'h', 'h', 'g', 'g', 'h', 'h', 'g', 'g', 'h', 'h', 'g'],
'V1': [84.0, 440.0, 423.0, 63.0, 990.0, 192.0, 169.0, 387.0, 934.0, 208.0, 834.0, 923.0, 230.0],
'V2': [120.0, 942.0, 153.0, 284.0, 517.0, 695.0, 37.0, 30.0, …所以我正在尝试谷歌应用程序引擎搜索库的新python代码,我遇到了一个奇怪的语法.这是:
cls_createDocument(**params)
params是一本字典.
这涉及的功能是:
@classmethod
def _createDocument(
cls, pid=None, category=None, name=None, description=None,
category_name=None, price=None, **params)
我的问题是,**params表示什么以及它对该对象有什么作用？
谢谢!乔恩