python an sqlite objects

MRAB google at mrabarnett.plus.com
Thu Dec 4 19:28:35 CET 2008


Bryan Olson wrote:
> Gerhard Häring wrote:
>> Be sure to save it as BLOB, not TEXT.
>>
>> Suppose you have serialized your object as Python bytestring.
>>
>> serialized = ...
>> ... .execute("insert into mytable(mycolumn) values (?)",
>>        (sqlite3.Binary(serialized),))
>>
>> This way you will get a BLOB in the form of a Python buffer object when
>> you later select it from the database  [...]
> 
> Good advice for now, with Python 2.X. Python 3 resolves most of 
> confusion with its distinction between the string type and the bytes 
> types. The 3.x standard library sqlite3 module understands the 'bytes' 
> and 'bytearray' types, and treats them appropriately.
> 
> Here's a runnable Python 3 demo:
> 
>     # Ensure that we're running Python 3 or later.
>     import sys
>     assert int(sys.version.split()[0].split('.')[0]) >= 3
>     # If there's a better way to chek, please tell.
> 
[snip]
Why split on whitespace and then '.'?

assert int(sys.version.split('.')[0]) >= 3




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