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Re: sqlite3 docbug (was problem with sqlite3)

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On 1/23/2014 12:35 AM, Rustom Mody wrote:
> On Thursday, January 23, 2014 10:11:42 AM UTC+5:30, Chris Angelico wrote:
>> I think it's fairly clear from the example that it has to be either a
>> tuple or a dict. Looks fine to me.
>
> yes 'from the example' and only from there!

'parameters' is a single parameter, which could be called 'seq_dict'. 
Let(seq_dict) must equal the number of replacements. A dict with extra 
pairs raises.

A list instead of a tuple does work, but not an iterable, so 'sequence'.

A dict subclass works, but a UserDict is treated as a sequence.
-----------
import sqlite3

con = sqlite3.connect(":memory:")
cur = con.cursor()
cur.execute("create table people (name_last, age)")

who = "Yeltsin"
age = 72
s = (who, age)

d = {'who':who, 'age':age}

class D(dict): pass
dD = D(d)

from collections import UserDict
dU = UserDict(d)

# This is the qmark style:
cur.execute("insert into people values (?, ?)", s)

# And this is the named style:
cur.execute("select * from people where name_last=:who and age=:age", dU)

print(cur.fetchone())
--------------
 >>>
Traceback (most recent call last):
   File "C:\Programs\Python34\tem.py", line 23, in <module>
     cur.execute("select * from people where name_last=:who and 
age=:age", dU)
   File "C:\Programs\Python34\lib\collections\__init__.py", line 883, in 
__getitem__
     raise KeyError(key)
KeyError: 0

Replacing dU in the last call with s works!

http://bugs.python.org/issue20364

-- 
Terry Jan Reedy

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problem with sqlite3: cannot use < in a SQL query with (?) lgabiot <lgabiot@hotmail.com> - 2014-01-23 03:32 +0100
  Re: problem with sqlite3: cannot use < in a SQL query with (?) lgabiot <lgabiot@hotmail.com> - 2014-01-23 03:34 +0100
  Re: problem with sqlite3: cannot use < in a SQL query with (?) Chris Angelico <rosuav@gmail.com> - 2014-01-23 13:42 +1100
  Re: problem with sqlite3: cannot use < in a SQL query with (?) bob gailer <bgailer@gmail.com> - 2014-01-22 21:51 -0500
  Re: problem with sqlite3: cannot use < in a SQL query with (?) bob gailer <bgailer@gmail.com> - 2014-01-22 21:51 -0500
  Re: problem with sqlite3: cannot use < in a SQL query with (?) Tim Chase <python.list@tim.thechases.com> - 2014-01-22 21:05 -0600
    sqlite3 docbug (was problem with sqlite3) Rustom Mody <rustompmody@gmail.com> - 2014-01-22 20:33 -0800
      Re: sqlite3 docbug (was problem with sqlite3) Rustom Mody <rustompmody@gmail.com> - 2014-01-22 20:37 -0800
      Re: sqlite3 docbug (was problem with sqlite3) Chris Angelico <rosuav@gmail.com> - 2014-01-23 15:41 +1100
        Re: sqlite3 docbug (was problem with sqlite3) Rustom Mody <rustompmody@gmail.com> - 2014-01-22 21:35 -0800
          Re: sqlite3 docbug (was problem with sqlite3) Chris Angelico <rosuav@gmail.com> - 2014-01-23 16:42 +1100
            Re: sqlite3 docbug (was problem with sqlite3) lgabiot <lgabiot@hotmail.com> - 2014-01-23 08:37 +0100
              Re: sqlite3 docbug (was problem with sqlite3) Mark Lawrence <breamoreboy@yahoo.co.uk> - 2014-01-23 09:04 +0000
                Re: sqlite3 docbug (was problem with sqlite3) lgabiot <lgabiot@hotmail.com> - 2014-01-23 10:45 +0100
                Re: sqlite3 docbug (was problem with sqlite3) Rustom Mody <rustompmody@gmail.com> - 2014-01-23 02:23 -0800
                Re: sqlite3 docbug (was problem with sqlite3) lgabiot <laurent.gabiot@gmail.com> - 2014-01-23 10:45 +0100
            Re: sqlite3 docbug (was problem with sqlite3) lgabiot <laurent.gabiot@gmail.com> - 2014-01-23 08:37 +0100
          Re: sqlite3 docbug (was problem with sqlite3) Terry Reedy <tjreedy@udel.edu> - 2014-01-23 05:43 -0500
            Re: sqlite3 docbug (was problem with sqlite3) Rustom Mody <rustompmody@gmail.com> - 2014-01-23 07:00 -0800
          Re: sqlite3 docbug (was problem with sqlite3) Tim Chase <python.list@tim.thechases.com> - 2014-01-23 06:36 -0600
          Re: sqlite3 docbug (was problem with sqlite3) Terry Reedy <tjreedy@udel.edu> - 2014-01-23 20:03 -0500
        Re: sqlite3 docbug (was problem with sqlite3) Asaf Las <roegltd@gmail.com> - 2014-01-22 23:18 -0800
          Re: sqlite3 docbug (was problem with sqlite3) Chris Angelico <rosuav@gmail.com> - 2014-01-23 18:47 +1100

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