web.py数据库选择访问权限

Question

I have been messing around with web.py lately and wanted to grab some stuff from a db and its returning me a "Storage" object. an the code i am using to call my info is:

db = web.database(dbn='sqlite', db='sqlfile.sqlite')
sely = db.select('carp', order="id ASC")

when sely runs it drops me out text like so:

<Storage {'lvl': 0, 'symbol': u'formb', 'logged': u'false', 'id': 1, 'display': u'Classic'}>

when you print out sely the storage line comes out. how can i get the dictionary out of this object?

Answer 1

A general Python trick for dealing with unknown APIs is to use the dir builtin . Try dir(sely) in the interpreter to see what member variables and functions are defined for the object you get.

• If you see something like __iter__ , you can call list(sely) to convert the results to a list, and generally iterate over the object in a loop.
• If you see something like __getitem__ , then you can index into the object and hope to get a value back.

As a side note, I just tried out your code and I get sely to be a web.utils.IterBetter instance (which returns 0 rows, instead of expected 3 in my case). So I cannot really reproduce your problem (but have problems of my own, so to speak).

Answer 2

db = web.database(dbn='sqlite', db='sqlfile.sqlite')
sely = db.select('carp', order="id ASC").list()

sely would be a list of storages, storage is the same as dict , but you can access arguments with obj.key , instead of obj["key"] . You can do dict(obj) to convert storage into dict .

Answer 3

in windows

return list(db.select('top',what='score',where="name = $id",vars=locals())

is ok. you can get the score's value.

but

in ubuntu

you shuld do it like this

db.select('top',what='score',where="name = $id",vars=locals())[0]["score"]

i don't know why but it works in my computer