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Title: functools — Higher-order functions and operations on callable objects — Python 3.15.0a5 documentation

Open Graph Title: functools — Higher-order functions and operations on callable objects

Description: Source code: Lib/functools.py The functools module is for higher-order functions: functions that act on or return other functions. In general, any callable object can be treated as a function for t...

Open Graph Description: Source code: Lib/functools.py The functools module is for higher-order functions: functions that act on or return other functions. In general, any callable object can be treated as a function for t...

Opengraph URL: https://docs.python.org/3/library/functools.html

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og:image:alt	Source code: Lib/functools.py The functools module is for higher-order functions: functions that act on or return other functions. In general, any callable object can be treated as a function for t...
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Links:

	https://www.python.org/
Table of Contents	https://docs.python.org/dev/contents.html
functools — Higher-order functions and operations on callable objects	https://docs.python.org/dev/library/functools.html
partial Objects	https://docs.python.org/dev/library/functools.html#partial-objects
itertools — Functions creating iterators for efficient looping	https://docs.python.org/dev/library/itertools.html
operator — Standard operators as functions	https://docs.python.org/dev/library/operator.html
Report a bug	https://docs.python.org/dev/bugs.html
Show source	https://github.com/python/cpython/blob/main/Doc/library/functools.rst?plain=1
index	https://docs.python.org/dev/genindex.html
modules	https://docs.python.org/dev/py-modindex.html
next	https://docs.python.org/dev/library/operator.html
previous	https://docs.python.org/dev/library/itertools.html
Python	https://www.python.org/
3.15.0a5 Documentation	https://docs.python.org/dev/index.html
The Python Standard Library	https://docs.python.org/dev/library/index.html
Functional Programming Modules	https://docs.python.org/dev/library/functional.html
functools — Higher-order functions and operations on callable objects	https://docs.python.org/dev/library/functools.html
¶	https://docs.python.org/dev/library/functools.html#module-functools
Lib/functools.py	https://github.com/python/cpython/tree/main/Lib/functools.py
functools	https://docs.python.org/dev/library/functools.html#module-functools
functools	https://docs.python.org/dev/library/functools.html#module-functools
¶	https://docs.python.org/dev/library/functools.html#functools.cache
“memoize”	https://en.wikipedia.org/wiki/Memoization
lru_cache()	https://docs.python.org/dev/library/functools.html#functools.lru_cache
¶	https://docs.python.org/dev/library/functools.html#functools.cached_property
property()	https://docs.python.org/dev/library/functions.html#property
cached_property()	https://docs.python.org/dev/library/functools.html#functools.cached_property
property()	https://docs.python.org/dev/library/functions.html#property
PEP 412	https://peps.python.org/pep-0412/
cached_property()	https://docs.python.org/dev/library/functools.html#functools.cached_property
property()	https://docs.python.org/dev/library/functions.html#property
lru_cache()	https://docs.python.org/dev/library/functools.html#functools.lru_cache
How do I cache method calls?	https://docs.python.org/dev/faq/programming.html#faq-cache-method-calls
cached_property()	https://docs.python.org/dev/library/functools.html#functools.cached_property
¶	https://docs.python.org/dev/library/functools.html#functools.cmp_to_key
key function	https://docs.python.org/dev/glossary.html#term-key-function
sorted()	https://docs.python.org/dev/library/functions.html#sorted
min()	https://docs.python.org/dev/library/functions.html#min
max()	https://docs.python.org/dev/library/functions.html#max
heapq.nlargest()	https://docs.python.org/dev/library/heapq.html#heapq.nlargest
heapq.nsmallest()	https://docs.python.org/dev/library/heapq.html#heapq.nsmallest
itertools.groupby()	https://docs.python.org/dev/library/itertools.html#itertools.groupby
Sorting Techniques	https://docs.python.org/dev/howto/sorting.html#sortinghowto
¶	https://docs.python.org/dev/library/functools.html#functools.lru_cache
hashable	https://docs.python.org/dev/glossary.html#term-hashable
dict	https://docs.python.org/dev/library/stdtypes.html#dict
named tuple	https://docs.python.org/dev/glossary.html#term-named-tuple
How do I cache method calls?	https://docs.python.org/dev/faq/programming.html#faq-cache-method-calls
LRU (least recently used) cache	https://en.wikipedia.org/wiki/Cache_replacement_policies#Least_Recently_Used_(LRU)
Fibonacci numbers	https://en.wikipedia.org/wiki/Fibonacci_number
dynamic programming	https://en.wikipedia.org/wiki/Dynamic_programming
¶	https://docs.python.org/dev/library/functools.html#functools.total_ordering
__lt__()	https://docs.python.org/dev/reference/datamodel.html#object.__lt__
__le__()	https://docs.python.org/dev/reference/datamodel.html#object.__le__
__gt__()	https://docs.python.org/dev/reference/datamodel.html#object.__gt__
__ge__()	https://docs.python.org/dev/reference/datamodel.html#object.__ge__
__eq__()	https://docs.python.org/dev/reference/datamodel.html#object.__eq__
¶	https://docs.python.org/dev/library/functools.html#functools.Placeholder
partial()	https://docs.python.org/dev/library/functools.html#functools.partial
partialmethod()	https://docs.python.org/dev/library/functools.html#functools.partialmethod
¶	https://docs.python.org/dev/library/functools.html#functools.partial
partial object	https://docs.python.org/dev/library/functools.html#partial-objects
partial()	https://docs.python.org/dev/library/functools.html#functools.partial
int()	https://docs.python.org/dev/library/functions.html#int
Placeholder	https://docs.python.org/dev/library/functools.html#functools.Placeholder
TypeError	https://docs.python.org/dev/library/exceptions.html#TypeError
Placeholder	https://docs.python.org/dev/library/functools.html#functools.Placeholder
¶	https://docs.python.org/dev/library/functools.html#functools.partialmethod
partialmethod	https://docs.python.org/dev/library/functools.html#functools.partialmethod
partial	https://docs.python.org/dev/library/functools.html#functools.partial
descriptor	https://docs.python.org/dev/glossary.html#term-descriptor
classmethod()	https://docs.python.org/dev/library/functions.html#classmethod
staticmethod()	https://docs.python.org/dev/library/functions.html#staticmethod
abstractmethod()	https://docs.python.org/dev/library/abc.html#abc.abstractmethod
partialmethod	https://docs.python.org/dev/library/functools.html#functools.partialmethod
partial object	https://docs.python.org/dev/library/functools.html#partial-objects
partialmethod	https://docs.python.org/dev/library/functools.html#functools.partialmethod
¶	https://docs.python.org/dev/library/functools.html#functools.reduce
itertools.accumulate()	https://docs.python.org/dev/library/itertools.html#itertools.accumulate
¶	https://docs.python.org/dev/library/functools.html#functools.singledispatch
single-dispatch	https://docs.python.org/dev/glossary.html#term-single-dispatch
generic function	https://docs.python.org/dev/glossary.html#term-generic-function
typing.Union	https://docs.python.org/dev/library/typing.html#typing.Union
lambdas	https://docs.python.org/dev/glossary.html#term-lambda
register()	https://docs.python.org/dev/library/functools.html#functools.singledispatch.register
register()	https://docs.python.org/dev/library/functools.html#functools.singledispatch.register
pickling	https://docs.python.org/dev/library/pickle.html#module-pickle
object	https://docs.python.org/dev/library/functions.html#object
abstract base class	https://docs.python.org/dev/glossary.html#term-abstract-base-class
register()	https://docs.python.org/dev/library/functools.html#functools.singledispatch.register
register()	https://docs.python.org/dev/library/functools.html#functools.singledispatch.register
typing.Union	https://docs.python.org/dev/library/typing.html#typing.Union
¶	https://docs.python.org/dev/library/functools.html#functools.singledispatchmethod
single-dispatch	https://docs.python.org/dev/glossary.html#term-single-dispatch
generic function	https://docs.python.org/dev/glossary.html#term-generic-function
@classmethod	https://docs.python.org/dev/library/functions.html#classmethod
@staticmethod	https://docs.python.org/dev/library/functions.html#staticmethod
@~abc.abstractmethod	https://docs.python.org/dev/library/abc.html#abc.abstractmethod
descriptor	https://docs.python.org/dev/glossary.html#term-descriptor
¶	https://docs.python.org/dev/library/functools.html#functools.update_wrapper
__module__	https://docs.python.org/dev/reference/datamodel.html#function.__module__
__name__	https://docs.python.org/dev/reference/datamodel.html#function.__name__
__qualname__	https://docs.python.org/dev/reference/datamodel.html#function.__qualname__
__annotations__	https://docs.python.org/dev/reference/datamodel.html#function.__annotations__
__type_params__	https://docs.python.org/dev/reference/datamodel.html#function.__type_params__
__doc__	https://docs.python.org/dev/reference/datamodel.html#function.__doc__
__dict__	https://docs.python.org/dev/reference/datamodel.html#function.__dict__
lru_cache()	https://docs.python.org/dev/library/functools.html#functools.lru_cache
decorator	https://docs.python.org/dev/glossary.html#term-decorator
update_wrapper()	https://docs.python.org/dev/library/functools.html#functools.update_wrapper
AttributeError	https://docs.python.org/dev/library/exceptions.html#AttributeError
__annotations__	https://docs.python.org/dev/reference/datamodel.html#function.__annotations__
AttributeError	https://docs.python.org/dev/library/exceptions.html#AttributeError
bpo-17482	https://bugs.python.org/issue?@action=redirect&bpo=17482
__type_params__	https://docs.python.org/dev/reference/datamodel.html#function.__type_params__
¶	https://docs.python.org/dev/library/functools.html#functools.wraps
update_wrapper()	https://docs.python.org/dev/library/functools.html#functools.update_wrapper
partial	https://docs.python.org/dev/library/functools.html#functools.partial
¶	https://docs.python.org/dev/library/functools.html#partial-objects
partial	https://docs.python.org/dev/library/functools.html#functools.partial
partial()	https://docs.python.org/dev/library/functools.html#functools.partial
¶	https://docs.python.org/dev/library/functools.html#functools.partial.func
partial	https://docs.python.org/dev/library/functools.html#functools.partial
func	https://docs.python.org/dev/library/functools.html#functools.partial.func
¶	https://docs.python.org/dev/library/functools.html#functools.partial.args
partial	https://docs.python.org/dev/library/functools.html#functools.partial
¶	https://docs.python.org/dev/library/functools.html#functools.partial.keywords
partial	https://docs.python.org/dev/library/functools.html#functools.partial
partial	https://docs.python.org/dev/library/functools.html#functools.partial
function objects	https://docs.python.org/dev/reference/datamodel.html#user-defined-funcs
__name__	https://docs.python.org/dev/library/stdtypes.html#definition.__name__
__doc__	https://docs.python.org/dev/library/stdtypes.html#definition.__doc__
Table of Contents	https://docs.python.org/dev/contents.html
functools — Higher-order functions and operations on callable objects	https://docs.python.org/dev/library/functools.html
partial Objects	https://docs.python.org/dev/library/functools.html#partial-objects
itertools — Functions creating iterators for efficient looping	https://docs.python.org/dev/library/itertools.html
operator — Standard operators as functions	https://docs.python.org/dev/library/operator.html
Report a bug	https://docs.python.org/dev/bugs.html
Show source	https://github.com/python/cpython/blob/main/Doc/library/functools.rst?plain=1
index	https://docs.python.org/dev/genindex.html
modules	https://docs.python.org/dev/py-modindex.html
next	https://docs.python.org/dev/library/operator.html
previous	https://docs.python.org/dev/library/itertools.html
Python	https://www.python.org/
3.15.0a5 Documentation	https://docs.python.org/dev/index.html
The Python Standard Library	https://docs.python.org/dev/library/index.html
Functional Programming Modules	https://docs.python.org/dev/library/functional.html
functools — Higher-order functions and operations on callable objects	https://docs.python.org/dev/library/functools.html
Copyright	https://docs.python.org/dev/copyright.html
History and License	https://docs.python.org/license.html
Please donate.	https://www.python.org/psf/donations/
Found a bug	https://docs.python.org/bugs.html
Sphinx	https://www.sphinx-doc.org/

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