Python tips: don't be too concise

http://www.b-list.org/weblog/2006/oct/28/python-tips-dont-be-too-concise/

Django - Using the admin date picker in our custom forms

I followed the instructions in this link and it worked perfectly:

http://stackoverflow.com/questions/38601/using-django-time-date-widgets-in-custom-form

Also this link is useful:

http://stackoverflow.com/questions/660898/django-using-admin-datepicker

Front end automation + tricks + tools in Django

Very interesting presentation:

http://www.slideshare.net/evanreiser/font-end-development-automation-with-django

More than 50 cheat sheets for web projects and other programming languages

In this page we can find a fantastic recopilation of cheat sheets for distinct programming languages and web specifications.

http://eomblog.blogspot.com/2011/11/57-estupendas-chuleta-cheat-sheets.html

The full blog is interesting, so we add the url of it.

http://eomblog.blogspot.com/

Thank you to the author for sharing all this information!

Django - Context Processors

In some occasions we may need information available to each template, like the user properties, the session settings, or an special variable.

What we could do is to add all this information to the response dictionary. However, it would contradict the DRY principle of Django.

A good approach is to use a customized Context Processor, which will add to the dictionary the returned variables of the function.

Specifically, the modifications we must do can be the following:

• Define the Context Processor function, like for example:

def context_processor_function(request):
return {'additional_values': ['a','b','c']}

• Load the function inside the TEMPLATE_CONTEXT_PROCESSORS variable of the setting.py:

TEMPLATE_CONTEXT_PROCESSORS = ("django.core.context_processors.auth",
...
"path_to_context_processor_function.context_processor_function",)

• Use the variables inside the templates like any other variables of the dictionary

For more complete information, this links are useful:

http://www.b-list.org/weblog/2006/jun/14/django-tips-template-context-processors/

https://docs.djangoproject.com/en/1.1/ref/settings/#std:setting-TEMPLATE_CONTEXT_PROCESSORS

http://stackoverflow.com/questions/335231/in-django-is-it-possible-to-access-the-current-user-session-from-within-a-custo

Terms of use and similar

In this link we can find models of the terms of use, terms of privacy, etc:

http://www.inteco.es/Seguridad/Observatorio/area_juridica_seguridad/Modelos_de_Contratos_Tecnologicos/ctto_politica_privacidad_es

CSS UL LI - Horizontal CSS Menu

Interesting link:

http://www.secondpicture.com/tutorials/web_design/css_ul_li_horizontal_css_menu.html

Python - C++ like stream input

One of the things in which C++ is better than Python is in the stream input, using the fantastic cin option.

In this link there are similar ways to do the same with Python

http://stackoverflow.com/questions/417703/python-c-like-stream-input

How do I plot an inset figure in matlab?

A very interesting link:

http://www.nada.kth.se/~hjorth/matlab/

How do I extract data points from a plot in Matlab?

It could be extremely useful:

http://www.mathworks.es/support/solutions/en/data/1-1RIH3C/index.html?solution=1-1RIH3C

Latex Commands

Important Latex commands

http://en.wikibooks.org/wiki/LaTeX/Mathematics

Calculate integrals online

Online integrator

Definite Integral Calculator

Definite Integral Calculator

Iterating through two lists in a Django template

http://stackoverflow.com/questions/2415865/iterating-through-two-lists-in-django-templates

Access array elements in a Django template

http://stackoverflow.com/questions/1700661/access-array-elements-in-a-django-template


Remember that the dot notation in a Django template is used for four different notations in Python. In a template, foo.bar can mean any of:

foo[bar] # dictionary lookup
foo.bar # attribute lookup
foo.bar() # method call
foo[bar] # list-index lookup

Django - Modify database definition from the API

http://stackoverflow.com/questions/3157531/how-update-column-data-type-in-django


Using Django time/date widgets in custom form

http://stackoverflow.com/questions/38601/using-django-time-date-widgets-in-custom-form

Django - Decorators

http://uswaretech.com/blog/2009/06/understanding-decorators/

How to execute Python scripts from the console

>>> execfile("script.py")

Multiple LEFT JOINs in MSAccess

http://nm1m.blogspot.com/2007/10/multiple-left-joins-in-ms-access.html

Latex - How to change text properties of captions

There is related information here:

http://en.wikibooks.org/wiki/LaTeX/Floats,_Figures_and_Captions#Caption_Styles

How to send an email with an attachment with Python

In this page there is a fantastic solution:

http://kutuma.blogspot.com/2007/08/sending-emails-via-gmail-with-python.html

Gnuplot: save plot in jpeg

This are some useful commands:

set terminal jpeg

set output "fig.jpeg"

replot

set terminal x11

Log scale in gnuplot plots

The corresponding command is:

set log xy

Very important commands in Gnuplot

Plot two or more plots in the same window:

set multiplot

Plots with lines:

plot "file.dat" w l

Plot with yerrorbars. The third column of the input data is the lenght of the errorbar:

plot "file.dat" with errorbars

Hide the legend:

unset key