How to add a current string into an already existing list
Steven D'Aprano
steve+comp.lang.python at pearwood.info
Tue Nov 5 06:49:43 EST 2013
On Tue, 05 Nov 2013 12:33:49 +0200, Nick the Gr33k wrote:
> Στις 5/11/2013 12:20 μμ, ο/η Antoon Pardon έγραψε:
>
>> Did you read the documentation of fetchone?
>
>
>
> fetchone is like fetchall except from the fact that the former returned
> a row of data while the latter returned a list of rows of data.
Read the documentation of fetchone again:
http://docs.python.org/3/library/sqlite3.html#sqlite3.Cursor.fetchone
Take careful note of what it does when there is no more data to fetch.
> I dont know why it copmains about:
> TypeError: 'NoneType' object is not iterable
>
> what object is supposed to have benn of None type? how do i check for
> it?
Does the name "NoneType" give you a hint? Repeat after me:
"The type of **** is NoneType."
Take a guess what the **** should be. Then test it, in the interactive
interpreter:
type(****) # replace the stars with the object
and see what is printed.
--
Steven
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