Yuji's Increasingly Infrequent Ramblings
For whatever reason, if you need a non destructive HTML tabifier, I’ve found a great one. It will NOT modify your code.
http://tools.arantius.com/tabifier
I’m working in a shopping cart environment that can only handle one template file for the product pages and it must be < 64kb, meaning I've started to remove all whitespace to fit in my templates.
You really can't argue that the size should be below 64kb, if you have one template to handle infinite product types.
I was writing a lambda function to decode unicode into UTF8 but needed a conditional as some items would be None.
The syntax for inline if else is..
'result' if 'condition' else 'else result'
map(lambda x: x.encode('UTF8') if isinstance(x, unicode) else x.__str__(), mylist)
Ordering admin inlines is a common problem with a not so documented fix that I created. Even the BaseInlineFormSet.get_queryset() isn’t documented. By the way, it’s ever so slightly confusing that managers use `get_query_set` and this uses `get_queryset`.
To order admin inlines, specify the FormSet used by the Inline and override get_queryset() in your formset definition with ordering.
from django.forms.models import BaseInlineFormSet
class OrderedFormSet(BaseInlineFormSet):
def get_queryset(self):
return super(OrderedFormset, self).get_queryset().order_by('-sortfield')
class MyInline(admin.TabularInline):
model = Item
formset = OrderedFormSet
The django docs are down!
It occurs to me I’ve been preaching about how amazing the docs are. If I lost access to them, they wouldn’t be so useful.
I’ll go look into downloading them. Apparently they are in the release folder. I’ve never looked 🙂
I put this one off for months because I could never find the settings and google searched didn’t return very helpful results.
Proofreading settings live in Users > Personal Settings
"""
Log into Django Site
====================
By Yuji Tomita
2/22/2011
"""
import urllib
import urllib2
import contextlib
def login(login_url, username, password):
cookies = urllib2.HTTPCookieProcessor()
opener = urllib2.build_opener(cookies)
urllib2.install_opener(opener)
opener.open(login_url)
try:
token = [x.value for x in cookies.cookiejar if x.name == 'csrftoken'][0]
except IndexError:
return False, "no csrftoken"
params = dict(username=username, password=password, \
this_is_the_login_form=True,
csrfmiddlewaretoken=token,
)
encoded_params = urllib.urlencode(params)
with contextlib.closing(opener.open(login_url, encoded_params)) as f:
html = f.read()
print html
# we're in.
In the windows command prompt on mac parallels, you can not access your “actual” drive (\\.psf or z:\) as you get the error “CMD does not support UNC paths as current directories.”
The fix is to use pushd instead of cd
pushd z:\ z:\>_ popd
To install bbfreeze on OSX 10.6.6 you will have to go into your bbfreeze directory and manually update the macholib folder with macholib from svn.
svn co http://svn.pythonmac.org/macholib/macholib/trunk/macholib/ macholib_trunk mv macholib_trunk/macholib ../path/to/bbfreeze/
What a nightmare. Lets hope the exe works now.
Running cProfile is a bit of a pain.
You have to pass your function and all its scope as a string to cProfile, which is.. just a pain.
cProfile.run('''
def test(n):
x = 1
for i in range(n):
x = x * 2
''')
iPython has a magic function that lets you use the current scope.
def test(n):
x = 1
for i in range(n):
x = x * 2
%prun test(100000)
4 function calls in 0.753 CPU seconds
Ordered by: internal time
ncalls tottime percall cumtime percall filename:lineno(function)
1 0.752 0.752 0.753 0.753 :1(test)
1 0.002 0.002 0.002 0.002 {range}
1 0.000 0.000 0.753 0.753 :1()
1 0.000 0.000 0.000 0.000 {method 'disable' of '_lsprof.Profiler' objects}
I needed a smooth fadeIn effect after all images had been loaded in a specific element.
I solved the problem by incrementing a load counter and executing a function when the counter reaches the number of elements to load.
load_counter = 0;
$.each(my_images, function(i, item) {
$(item).load(function() {
load_counter ++;
if (load_counter == my_images.length) {
// all items have loaded
$("#my_element").fadeIn();
}
})
})
Yuji Tomita 