It is much more understandable. But it seems that the name
paint_formulas is not defined. What is supposed to be populated there?
Best Regards,
Jason
On Fri, 2010-01-08 at 20:43 -0800, Brian M wrote:
> Jason,
> What's the syntax error?
> Try this, it's untested but should be verbose enough to get you there.
> If you have trouble perhaps provide a sample file (few dozen records)
> that we can test against.
>
> import csv
> paint_formulas = csv.reader(csvfile)
> header = None
>
> #variable to store the paints we've already put in
> #database (avoiding duplications and/or having to
> #constantly query db)
> paints = dict()
>
> #variable to store the colorants already put in database
> known_colorants = dict()
>
> #these are the indexes that have colorant names
> #we'll use them to help get all the colorants
> colorant_indexes = [2,4,6,8,10]
>
> for formula in paint_formulas:
> formula_colorants = [] #will hold the colorants in this formula,
> however many there are
> if not header:
> header = formula #give value
> #and do nothing else cause it's just the column names
> else:
> #it's a paint formula
> name = row[0]
> base = row[1]
> #deal with the colorants
> for c in colorant_indexes:
> if row[c] <> None:
> colorant = row[c]
> amount = row[c+1] #next index is the amount
> #there's a colorant value to add
> if colorant in known_colorants:
> #already have this colorant in the database
> colorant_id = known_colorants[colorant]#retreive
> id from our knowns
> else:
> #new colorant, add to database
> known_colorants[colorant]=db.colorant.insert
> (name=colorant)
> colorant_id = known_colorants[colorant]
>
> #now add to this formula's list of colorants
> formula_colorants.append(dict(id = colorant_id, amount
> = amount))
> else:
> #no more colorants
> pass
>
> #add the paint
> if not name in paints:
> paints[name]=db.paint.insert(name=name)
>
> #then add each of the colorants
> for colorant in formula_colorants:
> db.paint_colorants.insert(paint_id=paints[name],
> base_coat = base,
> colorant_id=colorant[id], units = colorant
> [amount])
>
>
> Good Luck,
> Brian
>
> On Jan 8, 7:57 pm, Jason Brower <encomp...@gmail.com> wrote:
> > I tried the script but couldn't get through the syntax error. Sorry,
> > lots of commands I don't know there. :/
> > BR,
> > Jason
> >
> >
> >
> > On Fri, 2010-01-08 at 09:17 -0800, Brian M wrote:
> > > I have been working on using web2py to import csv files and find that
> > > in general it works very well. You will need to be careful with
> > > pulling in the colorant and amount fields - if you use the
> > > csv.DictReader() to refer to columns in the CSV file by name instead
> > > of index you'll find that you only get the value for the *last*
> > > colorant and amount. In other words, just using row['Colorant'] and row
> > > ['Amount'] will very likely cause you to loose data - you've got 5
> > > 'Colorant' entries in a single row, so each one in a row simply over-
> > > writes the earlier ones. You will most likely need to use the
> > > indexes, or just rename the column headers in the csv file so they are
> > > unique.
> >
> > > ~Brian
> >
> > > On Jan 8, 4:51 am, mdipierro <mdipie...@cs.depaul.edu> wrote:
> > > > Something like this?
> >
> > > > import csv
> > > > reader = csv.reader(csvfile)
> > > > header = None
> > > > paints = {}
> > > > colorants = {}
> > > > for line in reader:
> > > > if not header: header = line
> > > > else:
> > > > row = dict([header[i],item) for i,item in enumerate(line)])
> > > > name = row['Color Name']
> > > > colorant = row['Colorant']
> > > > if not name in paints:
> > > > paints[name]=db.paint.insert(name=name)
> > > > if not colorant in colorants:
> > > > colorants[colorant]=db.colorant.insert(name=colorant)
> > > > db.paint_colorants.insert(paint_id=paints
> > > > [name],colorant_id=colorants[colorant])
> >
> > > > On Jan 8, 4:10 am, Jason Brower <encomp...@gmail.com> wrote:
> >
> > > > > I have data like this in a csv file....
> > > > > "Color Name", Base, Colorant, Amount, Colorant, Amount, Colorant,
> > > > > Amount, Colorant, Amount, Colorant, Amount
> > > > > "10 PORDRR",G,fo1,76,da1,32,ro1,111,yi1,1,,
> > > > > It is for a paint database.
> > > > > Is it at all possible to import that into this model?
> > > > > Normally I would just take a few minutes and do it by hand. But I
> > > > > have
> > > > > 14,000+ entries, so that's out of the question. Any ideas? In
> > > > > particular, how do you handle the variance in how many kinds of
> > > > > colorants are added. Notice in this example that is only 4 colorants,
> > > > > and 5+ could be in the page. (Currently from this extraction, only 5
> > > > > colorants and their amounts.
> >
> > > > > db = SQLDB('sqlite://paint.sqlite')
> >
> > > > > db.define_table('paint',
> > > > > Field('name', length=30, requires=IS_NOT_EMPTY(),
> > > > > unique=True),
> > > > > Field('base_coat', length=3, requires=IS_NOT_EMPTY()),
> > > > > Field('hex_color', length=6))
> >
> > > > > db.define_table('colorant',
> > > > > Field('name', length=3, requires=IS_NOT_EMPTY()))
> >
> > > > > db.define_table('paint_colorants',
> > > > > Field('paint_id', db.paint),
> > > > > Field('colorant_id', db.colorant),
> > > > > Field('units', 'integer'))
> >
> > > > > db.paint_colorants.paint_id.requires=IS_IN_DB(db, 'paint.id',
> > > > > '%(name)s')
> > > > > db.paint_colorants.colorant_id.requires=IS_IN_DB(db, 'paint.id',
> > > > > '%(name)s')
> >
> > > > > Best Regards,
> > > > > Jason Brower
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