>>>from django.utils.translation import ugettext_lazy as _
use
_
instead of
ugettext_lazy
—-
title = models.CharField(_(‘title’),max_length=250, help_text=’Maximum 250 characters.’)
Jun 252009
Jun 252009
__init__
is a constructor.
———
class FooBar:
def __init__(self):
self.somevar = 42
>>> f = FooBar()
>>> f.somevar
42
You can put initial value
class FooBar:
def __init__(self, value=42):
self.somevar = value
>>> f = FooBar(‘This is a constructor argument’)
>>> f.somevar
‘This is a constructor argument’
——
Jun 252009
def
is to define function in Python.
—-
def square(x):
return x*x
Jun 252009
$
represents the end of string in regular expression.
Jun 252009
r ‘ ‘
is the Python syntax for defining raw strings.
Jun 252009
“from” loads a Python module into the current namespace, so that you can refer to it without the need to mention the module name again
>>>from django.conf.urls.defaults import *
Jun 252009
A module is a file containing Python definitions and statements.
The file name is the module name with the suffix .py appended.
Within a module, the module’s name (as a string) is available as the value of the global variable __name__.
Jun 252009
import loads a Python module into its own namespace
>>> import yourmodulename
