majgis

Summary

Redirect a Python import by using a dummy Python module that deletes its own reference and replaces it with relative module or package.

Purpose

Allows more control over a relative directory structure

Example

majgis

""" ArcGIS 10.0 ToolValidator - Import package or module relative to .tbx file

    Rules for packages:

        1. You can't import a subpackage (__init__.py) directly for example:
            # This works:
            import myPackage
            myPackage.mySubPackage.doSomething()

            # This doesn't work

majgis

class DictWrap(object):
  """ Wrap an existing dict, or create a new one, and access with either dot 
    notation or key lookup.

    The attribute _data is reserved and stores the underlying dictionary.
    When using the += operator with create=True, the empty nested dict is 
    replaced with the operand, effectively creating a default dictionary
    of mixed types.

    args:

majgis

#Compact example to get the name of the primary key field of a Django model.
loc_fields = self._model._meta.fields
loc_pk = next((f.db_column or f.name for f in loc_fields if f.primary_key))

#Get all related model classes for a model class or instance
related_models = [f.rel.to for f in loc_record._meta.fields if f.rel]

majgis

// Modified excerpt from:
//   https://developer.mozilla.org/en-US/docs/JavaScript/Introduction_to_Object-Oriented_JavaScript

// define the Person Class
function Person(name) {
	
	//Public property
	this.name = name;
	
        //Private property

majgis

class C(object):

    def __init__(self, x=None):
      self.x = x

    @property
    def x(self):
        return self._x

    @x.setter

majgis

from django.core.handlers.wsgi import WSGIRequest
from StringIO import StringIO
from django.contrib.auth.models import AnonymousUser

def GetFakeRequest(path='/', user=None):
  """ Construct a fake request(WSGIRequest) object"""
  req = WSGIRequest({
          'REQUEST_METHOD': 'GET',
          'PATH_INFO': path,
          'wsgi.input': StringIO()})

majgis

# Taken from http://taketwoprogramming.blogspot.com/2009/06/subclassing-jsonencoder-and-jsondecoder.html

class DateTimeAwareJSONEncoder(JSONEncoder):
  """ 
  Converts a python object, where datetime and timedelta objects are converted
  into objects that can be decoded using the DateTimeAwareJSONDecoder.
  """
  def default(self, obj):
    if isinstance(obj, datetime):
      return {

majgis

def DefaultKwargs(**init_kwargs):
  """Decorator factory for passing default kwargs to the decorated function.

  Returns:
    decorator function
  """

  def decorator(func):
    """Recieves a function, then wraps it with wrapper_func

majgis

"""Floored Relative Delta(frdelta)

  This module contains ready-made relativedeltas.  The kwargs class contains
  all the key word arguments used to create the relativedeltas

  All relativedeltas are floored, ie. all lesser absolute information is set
  to zero.

  If you need more than one forward(FWD) or backward(BWD), use multiplication:
    This: