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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