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Title: Concrete Objects Layer — Python 3.15.0a5 documentation

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Description: The functions in this chapter are specific to certain Python object types. Passing them an object of the wrong type is not a good idea; if you receive an object from a Python program and you are no...

Open Graph Description: The functions in this chapter are specific to certain Python object types. Passing them an object of the wrong type is not a good idea; if you receive an object from a Python program and you are no...

Opengraph URL: https://docs.python.org/3/c-api/concrete.html

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og:image:alt	The functions in this chapter are specific to certain Python object types. Passing them an object of the wrong type is not a good idea; if you receive an object from a Python program and you are no...
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Links:

	https://www.python.org/
Table of Contents	https://docs.python.org/dev/contents.html
Concrete Objects Layer	https://docs.python.org/dev/c-api/concrete.html
Fundamental Objects	https://docs.python.org/dev/c-api/concrete.html#fundamental-objects
Numeric Objects	https://docs.python.org/dev/c-api/concrete.html#numeric-objects
Sequence Objects	https://docs.python.org/dev/c-api/concrete.html#sequence-objects
Container Objects	https://docs.python.org/dev/c-api/concrete.html#container-objects
Function Objects	https://docs.python.org/dev/c-api/concrete.html#function-objects
Other Objects	https://docs.python.org/dev/c-api/concrete.html#other-objects
C API for extension modules	https://docs.python.org/dev/c-api/concrete.html#c-api-for-extension-modules
Buffer Protocol	https://docs.python.org/dev/c-api/buffer.html
Type Objects	https://docs.python.org/dev/c-api/type.html
Report a bug	https://docs.python.org/dev/bugs.html
Show source	https://github.com/python/cpython/blob/main/Doc/c-api/concrete.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/c-api/type.html
previous	https://docs.python.org/dev/c-api/buffer.html
Python	https://www.python.org/
3.15.0a5 Documentation	https://docs.python.org/dev/index.html
Python/C API Reference Manual	https://docs.python.org/dev/c-api/index.html
Concrete Objects Layer	https://docs.python.org/dev/c-api/concrete.html
¶	https://docs.python.org/dev/c-api/concrete.html#concrete-objects-layer
PyDict_Check()	https://docs.python.org/dev/c-api/dict.html#c.PyDict_Check
¶	https://docs.python.org/dev/c-api/concrete.html#fundamental-objects
Type Objects	https://docs.python.org/dev/c-api/type.html
Creating Heap-Allocated Types	https://docs.python.org/dev/c-api/type.html#creating-heap-allocated-types
The None Object	https://docs.python.org/dev/c-api/none.html
¶	https://docs.python.org/dev/c-api/concrete.html#numeric-objects
Integer Objects	https://docs.python.org/dev/c-api/long.html
Export API	https://docs.python.org/dev/c-api/long.html#export-api
PyLongWriter API	https://docs.python.org/dev/c-api/long.html#pylongwriter-api
Deprecated API	https://docs.python.org/dev/c-api/long.html#deprecated-api
Boolean Objects	https://docs.python.org/dev/c-api/bool.html
Floating-Point Objects	https://docs.python.org/dev/c-api/float.html
Pack and Unpack functions	https://docs.python.org/dev/c-api/float.html#pack-and-unpack-functions
Pack functions	https://docs.python.org/dev/c-api/float.html#pack-functions
Unpack functions	https://docs.python.org/dev/c-api/float.html#unpack-functions
Complex Number Objects	https://docs.python.org/dev/c-api/complex.html
Complex Numbers as C Structures	https://docs.python.org/dev/c-api/complex.html#complex-numbers-as-c-structures
¶	https://docs.python.org/dev/c-api/concrete.html#sequence-objects
Bytes Objects	https://docs.python.org/dev/c-api/bytes.html
PyBytesWriter	https://docs.python.org/dev/c-api/bytes.html#pybyteswriter
Create, Finish, Discard	https://docs.python.org/dev/c-api/bytes.html#create-finish-discard
High-level API	https://docs.python.org/dev/c-api/bytes.html#high-level-api
Getters	https://docs.python.org/dev/c-api/bytes.html#getters
Low-level API	https://docs.python.org/dev/c-api/bytes.html#low-level-api
Byte Array Objects	https://docs.python.org/dev/c-api/bytearray.html
Type check macros	https://docs.python.org/dev/c-api/bytearray.html#type-check-macros
Direct API functions	https://docs.python.org/dev/c-api/bytearray.html#direct-api-functions
Macros	https://docs.python.org/dev/c-api/bytearray.html#macros
Unicode Objects and Codecs	https://docs.python.org/dev/c-api/unicode.html
Unicode Objects	https://docs.python.org/dev/c-api/unicode.html#unicode-objects
Unicode Type	https://docs.python.org/dev/c-api/unicode.html#unicode-type
Unicode Character Properties	https://docs.python.org/dev/c-api/unicode.html#unicode-character-properties
Creating and accessing Unicode strings	https://docs.python.org/dev/c-api/unicode.html#creating-and-accessing-unicode-strings
Locale Encoding	https://docs.python.org/dev/c-api/unicode.html#locale-encoding
File System Encoding	https://docs.python.org/dev/c-api/unicode.html#file-system-encoding
wchar_t Support	https://docs.python.org/dev/c-api/unicode.html#wchar-t-support
Built-in Codecs	https://docs.python.org/dev/c-api/unicode.html#built-in-codecs
Generic Codecs	https://docs.python.org/dev/c-api/unicode.html#generic-codecs
UTF-8 Codecs	https://docs.python.org/dev/c-api/unicode.html#utf-8-codecs
UTF-32 Codecs	https://docs.python.org/dev/c-api/unicode.html#utf-32-codecs
UTF-16 Codecs	https://docs.python.org/dev/c-api/unicode.html#utf-16-codecs
UTF-7 Codecs	https://docs.python.org/dev/c-api/unicode.html#utf-7-codecs
Unicode-Escape Codecs	https://docs.python.org/dev/c-api/unicode.html#unicode-escape-codecs
Raw-Unicode-Escape Codecs	https://docs.python.org/dev/c-api/unicode.html#raw-unicode-escape-codecs
Latin-1 Codecs	https://docs.python.org/dev/c-api/unicode.html#latin-1-codecs
ASCII Codecs	https://docs.python.org/dev/c-api/unicode.html#ascii-codecs
Character Map Codecs	https://docs.python.org/dev/c-api/unicode.html#character-map-codecs
MBCS codecs for Windows	https://docs.python.org/dev/c-api/unicode.html#mbcs-codecs-for-windows
Methods and Slot Functions	https://docs.python.org/dev/c-api/unicode.html#methods-and-slot-functions
PyUnicodeWriter	https://docs.python.org/dev/c-api/unicode.html#pyunicodewriter
Deprecated API	https://docs.python.org/dev/c-api/unicode.html#deprecated-api
Tuple Objects	https://docs.python.org/dev/c-api/tuple.html
Struct Sequence Objects	https://docs.python.org/dev/c-api/tuple.html#struct-sequence-objects
List Objects	https://docs.python.org/dev/c-api/list.html
¶	https://docs.python.org/dev/c-api/concrete.html#container-objects
Dictionary Objects	https://docs.python.org/dev/c-api/dict.html
Dictionary View Objects	https://docs.python.org/dev/c-api/dict.html#dictionary-view-objects
Ordered Dictionaries	https://docs.python.org/dev/c-api/dict.html#ordered-dictionaries
Set Objects	https://docs.python.org/dev/c-api/set.html
Deprecated API	https://docs.python.org/dev/c-api/set.html#deprecated-api
¶	https://docs.python.org/dev/c-api/concrete.html#function-objects
Function Objects	https://docs.python.org/dev/c-api/function.html
Instance Method Objects	https://docs.python.org/dev/c-api/method.html
Method Objects	https://docs.python.org/dev/c-api/method.html#method-objects
Cell Objects	https://docs.python.org/dev/c-api/cell.html
Code Objects	https://docs.python.org/dev/c-api/code.html
Code Object Flags	https://docs.python.org/dev/c-api/code.html#code-object-flags
Extra information	https://docs.python.org/dev/c-api/code.html#extra-information
¶	https://docs.python.org/dev/c-api/concrete.html#other-objects
File Objects	https://docs.python.org/dev/c-api/file.html
Deprecated API	https://docs.python.org/dev/c-api/file.html#deprecated-api
Module Objects	https://docs.python.org/dev/c-api/module.html
Module definition	https://docs.python.org/dev/c-api/module.html#module-definition
Metadata slots	https://docs.python.org/dev/c-api/module.html#metadata-slots
Feature slots	https://docs.python.org/dev/c-api/module.html#feature-slots
Creation and initialization slots	https://docs.python.org/dev/c-api/module.html#creation-and-initialization-slots
Module state	https://docs.python.org/dev/c-api/module.html#module-state
Slots for defining module state	https://docs.python.org/dev/c-api/module.html#slots-for-defining-module-state
Module token	https://docs.python.org/dev/c-api/module.html#module-token
Creating extension modules dynamically	https://docs.python.org/dev/c-api/module.html#creating-extension-modules-dynamically
Module definition struct	https://docs.python.org/dev/c-api/module.html#module-definition-struct
Support functions	https://docs.python.org/dev/c-api/module.html#support-functions
Module lookup (single-phase initialization)	https://docs.python.org/dev/c-api/module.html#module-lookup-single-phase-initialization
Iterator Objects	https://docs.python.org/dev/c-api/iterator.html
Range Objects	https://docs.python.org/dev/c-api/iterator.html#range-objects
Builtin Iterator Types	https://docs.python.org/dev/c-api/iterator.html#builtin-iterator-types
Other Iterator Objects	https://docs.python.org/dev/c-api/iterator.html#other-iterator-objects
Descriptor Objects	https://docs.python.org/dev/c-api/descriptor.html
Built-in descriptors	https://docs.python.org/dev/c-api/descriptor.html#built-in-descriptors
Slice Objects	https://docs.python.org/dev/c-api/slice.html
Ellipsis Object	https://docs.python.org/dev/c-api/slice.html#ellipsis-object
MemoryView objects	https://docs.python.org/dev/c-api/memoryview.html
Pickle buffer objects	https://docs.python.org/dev/c-api/picklebuffer.html
Weak Reference Objects	https://docs.python.org/dev/c-api/weakref.html
Capsules	https://docs.python.org/dev/c-api/capsule.html
Frame Objects	https://docs.python.org/dev/c-api/frame.html
Frame Locals Proxies	https://docs.python.org/dev/c-api/frame.html#frame-locals-proxies
Legacy Local Variable APIs	https://docs.python.org/dev/c-api/frame.html#legacy-local-variable-apis
Internal Frames	https://docs.python.org/dev/c-api/frame.html#internal-frames
Generator Objects	https://docs.python.org/dev/c-api/gen.html
Asynchronous Generator Objects	https://docs.python.org/dev/c-api/gen.html#asynchronous-generator-objects
Deprecated API	https://docs.python.org/dev/c-api/gen.html#deprecated-api
Coroutine Objects	https://docs.python.org/dev/c-api/coro.html
Context Variables Objects	https://docs.python.org/dev/c-api/contextvars.html
Objects for Type Hinting	https://docs.python.org/dev/c-api/typehints.html
¶	https://docs.python.org/dev/c-api/concrete.html#c-api-for-extension-modules
Curses C API	https://docs.python.org/dev/c-api/curses.html
Internal data	https://docs.python.org/dev/c-api/curses.html#internal-data
DateTime Objects	https://docs.python.org/dev/c-api/datetime.html
Internal data	https://docs.python.org/dev/c-api/datetime.html#internal-data
Table of Contents	https://docs.python.org/dev/contents.html
Concrete Objects Layer	https://docs.python.org/dev/c-api/concrete.html
Fundamental Objects	https://docs.python.org/dev/c-api/concrete.html#fundamental-objects
Numeric Objects	https://docs.python.org/dev/c-api/concrete.html#numeric-objects
Sequence Objects	https://docs.python.org/dev/c-api/concrete.html#sequence-objects
Container Objects	https://docs.python.org/dev/c-api/concrete.html#container-objects
Function Objects	https://docs.python.org/dev/c-api/concrete.html#function-objects
Other Objects	https://docs.python.org/dev/c-api/concrete.html#other-objects
C API for extension modules	https://docs.python.org/dev/c-api/concrete.html#c-api-for-extension-modules
Buffer Protocol	https://docs.python.org/dev/c-api/buffer.html
Type Objects	https://docs.python.org/dev/c-api/type.html
Report a bug	https://docs.python.org/dev/bugs.html
Show source	https://github.com/python/cpython/blob/main/Doc/c-api/concrete.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/c-api/type.html
previous	https://docs.python.org/dev/c-api/buffer.html
Python	https://www.python.org/
3.15.0a5 Documentation	https://docs.python.org/dev/index.html
Python/C API Reference Manual	https://docs.python.org/dev/c-api/index.html
Concrete Objects Layer	https://docs.python.org/dev/c-api/concrete.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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