def export_as_csv(report, fields, force_fields):
     print "export to csv started"
     """
    Generic csv export admin action.
    based on http://djangosnippets.org/snippets/2020/
    extended for being able to give list_display as fields and work with     admin-defined functions
    """
    opts = report
    if not force_fields:
        field_names = set([field.name for field in opts.fields])
        if fields:
        fieldset = set(fields)
            field_names = field_names & fieldset
    elif fields:
        field_names = set(fields)
    else:
        raise("option force_fields can only be used in parallel with option fields")

    writer = csv.writer(open("myfile.csv","w"), delimiter=',',quoting=csv.QUOTE_ALL)

    writer.writerow(list(field_names))
    row = []
    for field in field_names:
        try:
        row.append(unicode(getattr(report, field)).encode('utf-8'))
        except AttributeError:
            row.append(unicode((getattr(report, field)(report))).encode('utf-8'))
        except:
            raise
    writer.writerow(row)

    response = writer
    return response

list_display = ('primary_id', 'created_date', 'report_size',)
mail = EmailMessage('Email Subject', 'Email Body', None, ['example@example.com'])
mail.attach("report.csv", export_as_csv(report, fields = list_display, force_fields=True) , "text/csv")
mail.send()

class Report(models.Model):
    primary_id = models.IntegerField('Primary Key', primary_key = True, default=0)
    created_date = models.DateTimeField('Created date', default=timezone.now)
    report_size = models.IntegerField('Report Size', default=0)