deep copyingsee copying collections deepcopy((copy module) def (statement) - default arguments defaultdict type (collections module) - degrees((math module) del (statement) __del__() __delattr__() delattr((built-in) delegation delete (sql statement) __delitem__(([]) deque type (collections module) description attribute (cursor object) descriptors - - detach((stdin file object) development environment (idle) - - dialogsmodal __dict__ (attribute) dict type - changing clear() comparing comprehensions - copy() dict((built-in) fromkeys() get() inverting items() keys() methodstable of pop() popitem() setdefault() dict type (cont update() updating values() view see also collections defaultdictcollections ordereddictand sorteddict py dictionaryinverting dictionary branching - dictionary comprehensions - dictionary keys difference_update((set type) difference(frozenset type set type difflib module digit_names py (example) __dir__() dir((built-in) directoriescomparing directoriestemporary directory handling - dirname((os path module) discard((set type) __divmod__() divmod((built-in) __doc__ (attribute) docstrings - see also doctest module doctest module - - documentation dom (document object model)see xml dom module domain-specific language (dsl) doublevar type (tkinter module) dsl (domain-specific language) dsu (decoratesortundecorate)