[Python-Dev] Why are there no 'set' and 'frozenset' types in the 'types' module? (original) (raw)

exarkun at twistedmatrix.com exarkun at twistedmatrix.com
Mon Apr 25 16:17:03 CEST 2011

On 02:01 pm, haael at interia.pl wrote:

Because there's no reason to include them, since they are already in the root (builtins) namespace.

You'll notice that in Python 3, the "types" module only contains types which are not obviously accessed through easier means: OK, makes sense, but in this case it would be handy to have some list of all possible built-in types. I was just creating one and I nearly missed sets. If an entry in 'types' module is too much, there should be some comprehensive list in the documentation at least.

Maybe this is what you're after?

pprint([t for t in object.subclasses() if t.module == 'builtin']) [<type 'type'>, <type 'weakref'>, <type 'weakcallableproxy'>, <type 'weakproxy'>, <type 'int'>, <type 'basestring'>, <type 'bytearray'>, <type 'list'>, <type 'NoneType'>, <type 'NotImplementedType'>, <type 'traceback'>, <type 'super'>, <type 'xrange'>, <type 'dict'>, <type 'set'>, <type 'slice'>, <type 'staticmethod'>, <type 'complex'>, <type 'float'>, <type 'buffer'>, <type 'long'>, <type 'frozenset'>, <type 'property'>, <type 'tuple'>, <type 'enumerate'>, <type 'reversed'>, <type 'code'>, <type 'frame'>, <type 'builtin_function_or_method'>, <type 'instancemethod'>, <type 'function'>, <type 'classobj'>, <type 'dictproxy'>, <type 'generator'>, <type 'getset_descriptor'>, <type 'wrapper_descriptor'>, <type 'instance'>, <type 'ellipsis'>, <type 'member_descriptor'>, <type 'EncodingMap'>, <type 'module'>, <type 'classmethod'>, <type 'file'>]

Jean-Paul

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