py4web

Try me (from pip)

python3 -m pip install -U py4web --no-cache-dir --user
py4web setup apps
py4web setup set-password
py4web run apps
open http://localhost:8000/todo/index

(The apps folder will be created with some apps inside)

Try me (from source)

git clone https://github.com/web2py/py4web.git
cd py4web 
python3 -m pip install -r requirements.txt
./py4web.py setup apps
./py4web.py setup set-password
./py4web.py run apps
open http://localhost:8000/todo/index

Try me (install from source)

git clone https://github.com/web2py/py4web.git
cd py4web
make assets
make test
make install
py4web run apps
open http://localhost:8000/todo/index

Notice "py4web" uses the pip installed py4web, "./py4web.py" uses the local one. Do not get confused. Also notice when installing from source the content of py4web/assets is missing and it is created by make assets.

Tell me more

• this is a work in progress and not stable yet but close to being stable
• python3 only
• uses https://github.com/web2py/pydal (same DAL as web2py)
• uses https://github.com/web2py/yatl (same as web2py but defaults to [[...]] instead of {{...}} delimiters)
• uses the same validators as web2py (they are in pyDAL)
• uses the very similar helpers to web2py (A, DIV, SPAN, etc.)
• uses https://github.com/web2py/pluralize for i18n and pluralization
• request, response, abort are from https://bottlepy.org
• HTTP and redirect are our own objects
• like web2py, it supports static asset management /{appname}/static/_0.0.0/{path}
• implements sessions in cookies (jwt encrypted), db, memcache, redis and custom
• implements a cache.memoize (Ram cache with O(1) access) Memoize
• supports multiple apps under apps folder (same as web2py)
• unlike web2py does not use a custom importer or eval
• admin has been replaced by a _dashboard (90% done)
• appadmin has been replaced by dbadmin (within dashboard) (90% done)
• auth logic is implemented via a "auth" vue.js custom component (90% done)
• SQLFORM has been replaced by py4web/utils/form.py
• SQLFORM.grid was been replaced by a "mtable" vue.js custom component (90% done)
• there are not enough tests
• it is not as stable as web2py yet
• it is 10-20x faster than web2py

Components

• pydal + dbapi (done)
• yatl (done)
• pluralize (done)
• auth (WIP, 90%)
• mailer (done)
• session (cookies, db, redis, memcache)
• form (done up to downloads)
• mtable (WIP, 75%)
• dashboard (90% done)
• scaffold (done)
• bus (0%)
• tornado (done)
• gevent (done)
• gunicorn (done)
• bottle (done)

Storing _dashboard password

When py4web starts it asks for a _dashboard password and stores its pdkdf2 hash in password.txt, in the working folder. It will not ask again unless the file is deleted. If the --dashboard_mode is demo or none it will not ask. If you want to store it somewhere else, you can specify a name with --password_file.

You can create the file yourself with:

$ python3 -c "from pydal.validators import CRYPT; open('password.txt','w').write(str(CRYPT()(input('password:'))[0]))"
password: *****

Launch Arguments

usage: py4web-start.py [-h] [--host HOSTNAME] [--port PORT] [--headless] [-n NUMBER_WORKERS]
                       [--ssl_cert_filename SSL_CERT_FILENAME]
                       [--ssl_key_filename SSL_KEY_FILENAME]
                       [--service_db_uri SERVICE_DB_URI] [-d DASHBOARD_MODE]
                       [-p PASSWORD_FILE] [-c]
                       apps_folder

positional arguments:
  apps_folder           path to the applications folder

optional arguments:
  -h, --help            show this help message and exit
  --host HOSTNAME       server address (IP or hostname)
  --port PORT           server port number (e.g., 8000)
  --headless            hide artwork for console based servers
  -n NUMBER_WORKERS, --number_workers NUMBER_WORKERS
                        number of gunicorn workers
  --ssl_cert_filename SSL_CERT_FILENAME
                        ssl certificate file
  --ssl_key_filename SSL_KEY_FILENAME
                        ssl key file
  --service_db_uri SERVICE_DB_URI
                        db uri for logging
  -d DASHBOARD_MODE, --dashboard_mode DASHBOARD_MODE
                        dashboard mode: demo, readonly, full (default), none
  -p PASSWORD_FILE, --password_file PASSWORD_FILE
                        file containing the encrypted (CRYPT) password
  -c, --create          created the missing folder and apps

Example:

py4web-start -a 127.0.0.1:8000 -d demo apps

WSGI

py4web is a WSGI application. To obtain the WSGI app simply do:

from py4web.core import wsgi
application = wsgi()

The wsgi function takes arguments with the same name as the command line arguments.

Contributors

• Cassio Botaro
• Dan Carroll
• Jim Steil
• John M. Wolf
• Massimo Di Pierro
• Micah Beasley
• Nico Zanferrari
• Pirsch
• sugizo
• valq7711

Screenshots

CSE183-Web-Application

CSE183-Web-Application