AdotDdot

class CaselessDictionary(dict):
    """Dictionary that enables case insensitive searching while preserving case sensitivity 
when keys are listed, ie, via keys() or items() methods. 

Works by storing a lowercase version of the key as the new key and stores the original key-value 
pair as the key's value (values become dictionaries)."""

    def __init__(self, initval={}):
        if isinstance(initval, dict):
            for key, value in initval.iteritems():