Zip Question

Victor Subervi victorsubervi at gmail.com
Fri Oct 9 19:18:11 CEST 2009


You're right...how strange. Here's the whole code:

  tables = []
  bst = []
  bdt = []
  spt = []
  sst = []
  sstp = []
  cursor.execute('show tables;')
  all = cursor.fetchall()
  for a in all:
    tables.append(a[0])
  for table in tables:
    if table[0] == 'b': # This is a basic table
      if table[1] == '0': # This is a basic static table
        bst.append(table)
#      elif table[1] == '1': # This is a basic dynamic table
#        bdt.append(table)
# Basic dynamic tables, like "pic" below, have to be manually created.
    elif table[0] == 's': # This is a store table
      if table[1] == '0': # This is a store primary table
        spt.append(table)
    elif table[0] == 't': # This is a store subtype table
      bits = string.split(table, '0')
      sst.append(bits[2])
      sstp.append(bits[1])
  subtypes = dict(zip(sstp, sst))
  print sst
  print '<br />'
  print sstp
  print '<br />'
  print subtypes
  print '<br />'

This is what prints out:

['doctors', 'patient']
['prescriptions', 'prescriptions']
{'prescriptions': 'patient'}

TIA,
V

On Fri, Oct 9, 2009 at 12:10 PM, Stephen Hansen <apt.shansen at gmail.com>wrote:

>
>
> On Fri, Oct 9, 2009 at 10:02 AM, Victor Subervi <victorsubervi at gmail.com>wrote:
>
>> Hi;
>> I have the following code:
>>
>>     elif table[0] == 't': # This is a store subtype table
>>       bits = string.split(table, '0')
>>       sst.append(bits[2])
>>       sstp.append(bits[1])
>>   subtypes = dict(zip(sstp, sst))
>>
>> When I print these out to screen, I get this:
>>
>> sst: ['doctors', 'patient']
>> sstp: ['prescriptions', 'prescriptions']
>> subtypes: {'prescriptions': 'patient'}
>>
>> Why do I only get one item from sst and sstp zipped? Why not both??
>
> I think you have a logic problem that's not shown in that code sample:
>
> >>> sst = ['doctors', 'patient']
> >>> sstp = ['prescriptions', 'prescriptions']
> >>> zip(sst,sstp)
> [('doctors', 'prescriptions'), ('patient', 'prescriptions')]
> >>> dict(zip(sst,sstp))
> {'patient': 'prescriptions', 'doctors': 'prescriptions'}
> >>>
>
> --S
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20091009/8d010593/attachment.html>


More information about the Python-list mailing list