https://github.com/linsomniac/python-psycopgwrap

A helper wrapper for psycopg to make database coding easier in Python.
https://github.com/linsomniac/python-psycopgwrap

Last synced: 11 days ago
JSON representation

A helper wrapper for psycopg to make database coding easier in Python.

• Host: GitHub
• URL: https://github.com/linsomniac/python-psycopgwrap
• Owner: linsomniac
• Created: 2010-11-13T00:35:33.000Z (about 14 years ago)
• Default Branch: master
• Last Pushed: 2011-01-20T21:37:15.000Z (almost 14 years ago)
• Last Synced: 2023-07-26T19:22:19.403Z (over 1 year ago)
• Language: Python
• Homepage:
• Size: 102 KB
• Stars: 4
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README

Awesome Lists containing this project

README

        
python-psycopgwrap

Written by Sean Reifschneider 

Placed in the public domain.

No rights reserved.

Please submit bugs/fixes at:

   http://github.com/linsomniac/python-psycopgwrap

A wrapper around psycopg2 to make common things easier.  It really doesn't

follow the DB-API.  It's mostly for me to experiment with other ways of

talking to the database than the standard DB-API.  I've used this in a

number of projects.  It's primary focus is convenience.

Here are a few of the features:

   Query results can be accessed as a dictionary of columns (row['id']).

   Query results can be accessed as attributes (row.id).

   Query results can be accessed as lists (row[0]).

   Queries return indexable iterators, so you can do things like "for

   row in query", and "query(cmd)[0]".  Note that indexes can only be

   larger than or equal to the last index.

   Query arguments are passed as discrete arguments, not as a tuple.

   Passing as a tuple always makes me want to do a "%" and if I accidentally

   do that it can open up a SQL injection.

   There's an "insert" helper that takes a table name and keyword arguments.

   Similarly there's a "dictinsert" helper that takes a dictionary of

   row:values.

Examples:

   from psycopgwrap import Database as db

   db.connect('dbname=testdb')

   user = db.query('SELECT * FROM users WHERE name = %s', name)

   if user == None:

      print 'No such user "%s"' % name

   print 'User id: %s' % user.id        #  or user.id_

   for row in db.query('SELECT * FROM status WHERE id = %s', 500):

      print 'id:', row.['id']

Other examples:

   db.insert('users', name = 'Al Bert')

   db.insert('users', { name : 'Al Bert' })

   user_count = db.queryone('SELECT COUNT(*) FROM users')[0]  #  0-th column

   if db.queryone("SELECT * FROM users WHERE name = 'Al Bert'"):

      print 'Al is in the house'

   else: print 'No such user'

   try: db.commit()

   except: db.rollback()