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Groups > comp.lang.python > #43450
| From | someone <newsboost@gmail.com> |
|---|---|
| Newsgroups | comp.lang.python |
| Subject | Re: python-noob - which container is appropriate for later exporting into mySql + matplotlib ? |
| Date | 2013-04-12 16:03 +0200 |
| Organization | A noiseless patient Spider |
| Message-ID | <kk9433$l9s$1@dont-email.me> (permalink) |
| References | <kk4nkd$ain$1@dont-email.me> <kk6tk2$inl$1@dont-email.me> |
On 2013-04-11 19:58, Cousin Stanley wrote:
> someone wrote:
>
>> ....
>> I want to put this table into an appropriate container
>> such that afterwards I want to:
>>
>> 1) Put the data into a mySql-table
>> ....
>
> You might consider using sqlite3 as a database manager
> since it is "batteries included" with python ....
>
> The stand-alone sqlite interpreter can first be used
> to create an empty database named some.sql3
> and create a table named xdata in that data base ....
>
> sqlite3 some.sql3 '.read xdata_create.sql'
>
> where the file xdata_create.sql contains ....
>
> create table xdata
> (
> xdate integer ,
> xtime integer ,
> col1 real ,
> col2 integer ,
> col3 integer ,
> col4 real ,
> col5 integer ,
> col6 integer
> ) ;
Oh, thank you very much! Now I understand this (I haven't really worked
much with sql before, so this was/is new to me, thanks!).
> The csv data file can then be inserted into the xdata table
> in the some.sql3 database via python ....
........ and .......
> # python data selection example
> # for column 4 between 8 and 9
I combined both code snippets into:
==============================
#!/usr/bin/python
import sqlite3 as DBM
import ipdb
fs = open( 'some.csv' )
ls = [ ]
dbc = DBM.connect( 'some.sql3' )
cur = dbc.cursor()
if 0:
sql = 'insert into xdata values( ? , ? , ? , ? , ? , ? , ? , ? )'
for row in fs :
dt, col1, col2, col3, col4,col5, col6 = row.strip().split(',' )
xdate , xtime = dt.split( 'T' )
xtuple = ( xdate, xtime, col1, col2, col3, col4, col5, col6 )
cur.execute( sql , xtuple )
dbc.commit()
else:
list_sql = [
'select xtime , col4' ,
'from xdata' ,
'where xtime >= 80000 and xtime <= 90000 ; ' ]
str_sql = '\n'.join( list_sql )
cur.execute( str_sql )
for row in cur :
#ipdb.set_trace()
# I get: TypeError: "tuple indices must be integers, not str"
# "ipdb> row" says: "(80000, 46120.0)"
#print row[ 'xtime' ] , row[ 'col4' ]
print row[0] , row[1]
fs.close()
dbc.close()
==============================
I don't fully understand it yet, but it's nice to see that it works!
Thank you very much for that! Now I'll have to concentrate on figuring
out how/why it works :-)
> You can be creative with the data selections
> and pass them off to be plotted as needed ....
Yes, I understand. Thank you very much. As you can see, on my system I
had to use:
print row[0] , row[1]
instead of:
print row[ 'xtime' ] , row[ 'col4' ]
I'm not sure exactly why - is it because you have another version of
sqlite3 ? This is a bit strange, but anyway I can live with that - at
least for now...
> If mysql is used instead of sqlite3
> you should only have to monkey with
> the data type declarations in xdata_create.sql
> and the dbc.connect strings in the python code ....
Actually I didn't knew anything about this sqlite3 before now. This is
the first time I try it out, so I don't really know what's the
difference between sqlite3 and mysql...
But thank you very much for providing some code I can now study and
learn from !!! Much appreciated....
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python-noob - which container is appropriate for later exporting into mySql + matplotlib ? someone <newsboost@gmail.com> - 2013-04-11 00:06 +0200
Re: python-noob - which container is appropriate for later exporting into mySql + matplotlib ? Cousin Stanley <cousinstanley@gmail.com> - 2013-04-11 01:39 +0000
Re: python-noob - which container is appropriate for later exporting into mySql + matplotlib ? someone <newsboost@gmail.com> - 2013-04-11 10:49 +0200
Re: python-noob - which container is appropriate for later exporting into mySql + matplotlib ? someone <newsboost@gmail.com> - 2013-04-11 15:38 +0200
Re: python-noob - which container is appropriate for later exporting into mySql + matplotlib ? Cousin Stanley <cousinstanley@gmail.com> - 2013-04-11 17:58 +0000
Re: python-noob - which container is appropriate for later exporting into mySql + matplotlib ? Cousin Stanley <cousinstanley@gmail.com> - 2013-04-11 18:44 +0000
Re: python-noob - which container is appropriate for later exporting into mySql + matplotlib ? someone <newsboost@gmail.com> - 2013-04-12 16:19 +0200
Re: python-noob - which container is appropriate for later exporting into mySql + matplotlib ? someone <newsboost@gmail.com> - 2013-04-11 21:42 +0200
Re: python-noob - which container is appropriate for later exporting into mySql + matplotlib ? someone <newsboost@gmail.com> - 2013-04-12 16:03 +0200
Re: python-noob - which container is appropriate for later exporting into mySql + matplotlib ? Cousin Stanley <cousinstanley@gmail.com> - 2013-04-12 16:58 +0000
Re: python-noob - which container is appropriate for later exporting into mySql + matplotlib ? someone <newsboost@gmail.com> - 2013-04-12 22:52 +0200
Re: python-noob - which container is appropriate for later exporting into mySql + matplotlib ? Cousin Stanley <cousinstanley@gmail.com> - 2013-04-12 23:26 +0000
Re: python-noob - which container is appropriate for later exporting into mySql + matplotlib ? someone <newsboost@gmail.com> - 2013-04-13 02:00 +0200
Re: python-noob - which container is appropriate for later exporting into mySql + matplotlib ? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-04-13 01:44 +0000
Re: python-noob - which container is appropriate for later exporting into mySql + matplotlib ? someone <newsboost@gmail.com> - 2013-04-13 13:08 +0200
Re: python-noob - which container is appropriate for later exporting into mySql + matplotlib ? Chris Angelico <rosuav@gmail.com> - 2013-04-13 21:39 +1000
Re: python-noob - which container is appropriate for later exporting into mySql + matplotlib ? someone <newsboost@gmail.com> - 2013-04-13 15:30 +0200
Re: python-noob - which container is appropriate for later exporting into mySql + matplotlib ? Chris Angelico <rosuav@gmail.com> - 2013-04-14 00:03 +1000
Re: python-noob - which container is appropriate for later exporting into mySql + matplotlib ? Roy Smith <roy@panix.com> - 2013-04-13 10:36 -0400
Re: python-noob - which container is appropriate for later exporting into mySql + matplotlib ? someone <newsboost@gmail.com> - 2013-04-13 21:25 +0200
Re: python-noob - which container is appropriate for later exporting into mySql + matplotlib ? Roy Smith <roy@panix.com> - 2013-04-13 17:38 -0400
Re: python-noob - which container is appropriate for later exporting into mySql + matplotlib ? someone <newsboost@gmail.com> - 2013-04-13 16:39 +0200
Re: python-noob - which container is appropriate for later exporting into mySql + matplotlib ? Walter Hurry <walterhurry@lavabit.com> - 2013-04-13 14:56 +0000
Re: python-noob - which container is appropriate for later exporting into mySql + matplotlib ? someone <newsboost@gmail.com> - 2013-04-13 21:34 +0200
Re: python-noob - which container is appropriate for later exporting into mySql + matplotlib ? Walter Hurry <walterhurry@lavabit.com> - 2013-04-13 22:22 +0000
Re: python-noob - which container is appropriate for later exporting into mySql + matplotlib ? someone <newsboost@gmail.com> - 2013-04-14 00:31 +0200
Re: python-noob - which container is appropriate for later exporting into mySql + matplotlib ? Chris Angelico <rosuav@gmail.com> - 2013-04-14 08:54 +1000
Re: python-noob - which container is appropriate for later exporting into mySql + matplotlib ? someone <newsboost@gmail.com> - 2013-04-14 02:06 +0200
Re: python-noob - which container is appropriate for later exporting into mySql + matplotlib ? Chris Angelico <rosuav@gmail.com> - 2013-04-14 08:34 +1000
Re: python-noob - which container is appropriate for later exporting into mySql + matplotlib ? someone <newsboost@gmail.com> - 2013-04-14 02:10 +0200
Re: python-noob - which container is appropriate for later exporting into mySql + matplotlib ? Chris Angelico <rosuav@gmail.com> - 2013-04-14 02:15 +1000
Re: python-noob - which container is appropriate for later exporting into mySql + matplotlib ? rusi <rustompmody@gmail.com> - 2013-04-13 10:02 -0700
Re: python-noob - which container is appropriate for later exporting into mySql + matplotlib ? someone <newsboost@gmail.com> - 2013-04-13 21:49 +0200
Re: python-noob - which container is appropriate for later exporting into mySql + matplotlib ? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-04-14 07:56 +0000
Re: python-noob - which container is appropriate for later exporting into mySql + matplotlib ? rusi <rustompmody@gmail.com> - 2013-04-14 04:17 -0700
Re: python-noob - which container is appropriate for later exporting into mySql + matplotlib ? Chris Angelico <rosuav@gmail.com> - 2013-04-14 23:22 +1000
Re: python-noob - which container is appropriate for later exporting into mySql + matplotlib ? rusi <rustompmody@gmail.com> - 2013-04-15 04:45 -0700
Re: python-noob - which container is appropriate for later exporting into mySql + matplotlib ? Chris Angelico <rosuav@gmail.com> - 2013-04-15 22:28 +1000
Re: python-noob - which container is appropriate for later exporting into mySql + matplotlib ? Ned Deily <nad@acm.org> - 2013-04-14 09:40 -0700
Re: python-noob - which container is appropriate for later exporting into mySql + matplotlib ? Tim Chase <python.list@tim.thechases.com> - 2013-04-14 15:16 -0500
Re: python-noob - which container is appropriate for later exporting into mySql + matplotlib ? Roy Smith <roy@panix.com> - 2013-04-14 17:48 -0400
Re: python-noob - which container is appropriate for later exporting into mySql + matplotlib ? Chris Angelico <rosuav@gmail.com> - 2013-04-15 07:43 +1000
Re: python-noob - which container is appropriate for later exporting into mySql + matplotlib ? someone <newsboost@gmail.com> - 2013-04-13 21:42 +0200
Re: python-noob - which container is appropriate for later exporting into mySql + matplotlib ? Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2013-04-13 16:01 -0400
Re: python-noob - which container is appropriate for later exporting into mySql + matplotlib ? someone <newsboost@gmail.com> - 2013-04-13 23:36 +0200
Re: python-noob - which container is appropriate for later exporting into mySql + matplotlib ? Chris Angelico <rosuav@gmail.com> - 2013-04-14 08:44 +1000
Re: python-noob - which container is appropriate for later exporting into mySql + matplotlib ? Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2013-04-13 19:42 -0400
Re: python-noob - which container is appropriate for later exporting into mySql + matplotlib ? Cousin Stanley <cousinstanley@gmail.com> - 2013-04-14 18:20 +0000
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