3.2 Standard Module types

This module defines names for all object types that are used by the standard Python interpreter, but not for the types defined by various extension modules. It is safe to use "from types import *" -- the module does not export any names besides the ones listed here. New names exported by future versions of this module will all end in "Type".

Typical use is for functions that do different things depending on their argument types, like the following:

from types import *
def delete(list, item):
    if type(item) is IntType:
       del list[item]
    else:
       list.remove(item)

The module defines the following names:

NoneType
The type of None.

TypeType
The type of type objects (such as returned by type()).

IntType
The type of integers (e.g. 1).

LongType
The type of long integers (e.g. 1L).

FloatType
The type of floating point numbers (e.g. 1.0).

ComplexType
The type of complex numbers (e.g. 1.0j).

StringType
The type of character strings (e.g. 'Spam').

TupleType
The type of tuples (e.g. (1, 2, 3, 'Spam')).

ListType
The type of lists (e.g. [0, 1, 2, 3]).

DictType
The type of dictionaries (e.g. {'Bacon': 1, 'Ham': 0}).

DictionaryType
An alternate name for DictType.

FunctionType
The type of user-defined functions and lambdas.

LambdaType
An alternate name for FunctionType.

CodeType
The type for code objects such as returned by compile().

ClassType
The type of user-defined classes.

InstanceType
The type of instances of user-defined classes.

MethodType
The type of methods of user-defined class instances.

UnboundMethodType
An alternate name for MethodType.

BuiltinFunctionType
The type of built-in functions like len() or sys.exit().

BuiltinMethodType
An alternate name for BuiltinFunction.

ModuleType
The type of modules.

FileType
The type of open file objects such as sys.stdout.

XRangeType
The type of range objects returned by xrange().

SliceType
The type of objects returned by slice().

EllipsisType
The type of Ellipsis.

TracebackType
The type of traceback objects such as found in sys.exc_traceback.

FrameType
The type of frame objects such as found in tb.tb_frame if tb is a traceback object.