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...mapping or sequence patterns. __match_class__ should be overridden by classes that want to change the default behavior when matching class patterns. __match_container__ must be an integer and should be exactly one of these: 0 MATCH_SEQUENCE = 1 MATCH_MAPPING = 2 MATCH_SEQUENCE is used to indicate that instances of the class can match sequence patterns. MATCH_MAPPING is used to indicate that instances of the class can match mapping patterns. __match_class__ must be an integer and should be exac...
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Released: June 6, 2023
This is the fourth maintenance release of Python 3.11 Python 3.11.4 is the newest major release of the Python programming language, and it contains many new features and optimizations. Major new features of the 3.11 series, compared to 3.10 Some of the new major new features and changes in Python …
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...mapped files Numeric users sometimes need to access data from very large files or to handle data that is greater than the available memory. Memory-mapped arrays provide a mechanism to do this by storing the data on disk while making it appear to be in memory. Memory- mapped arrays should improve access to all files by eliminating one of two copy steps during a file access. Numeric should be able to access in-memory and memory-mapped arrays transparently. Record access In some fields of scien...
...map-holder { padding-top: 20px; } .section-map .h2 { margin-bottom: 0; line-height: 1.2; } .map-holder { position: relative; } .list-grants { list-style: none; font-weight: 700; } .list-grants .north-america { position: absolute; left: 28.5%; top: 8.5%; } .list-grants .north-america .h2 { color: #00929f; } .list-grants .europe { position: absolute; top: 4.8%; left: 67.5%; } .list-grants .europe .h2 { color: #755099; } .list-grant...
...map-holder { padding-top: 20px; } @media (min-width: 768px) { .section-chart .map-holder { padding-top: 30px; } } .section-map .h2 { margin-bottom: 0; line-height: 1.2; } @media (max-width: 479px) { .section-map .h2 { font-size: 16px; } } @media (min-width: 480px) and (max-width: 768px) { .section-map .h2 { font-size: 18px; } } @media (min-width: 768px) and (max-width: 1024px) { .section-map .h2 { font-size: 20px; } } .ma...
...map In order to provide user names the way they are common in hg (in the 'First Last <user@example.org>' format), we need an author map to map cvs and svn user names to real names and their email addresses. We have a complete version of such a map in the migration tools repository (not publicly accessible to avoid leaking addresses to harvesters). The email addresses in it might be out of date; that's bound to happen, although it would be nice to try and have as many people as possible r...
...Mapping dependency declarations to an RPM SPEC file As an example of mapping this PEP to Linux distro packages, assume an example project without any extras defined is split into 2 RPMs in a SPEC file: example and example-devel. The unconditional dependencies would be mapped to the Requires dependencies for the "example" RPM (a mapping from environment markers relevant to Linux to SPEC file conditions would also allow those to be handled correctly). The build and dev extra dependencies would be ...
...mapping with undefined order, such as dict, will preserve its iteration order like normal. It's just that the order will remain undefined. The ordered mapping into which the unpacked key-value pairs will then be packed will not be able to provide any alternate ordering. This should not be surprising. There have been brief discussions of simply passing these mappings through to the functions kwargs without unpacking and repacking them, but that is both outside the scope of this proposal and pr...
...Mapping Patterns Dictionaries or mappings in general are one of the most important and most widely used data structures in Python. In contrast to sequences, mappings are built for fast direct access to arbitrary elements identified by a key. In most cases an element is retrieved from a dictionary by a known key without regard for any ordering or other key-value pairs stored in the same dictionary. Particularly common are string keys. The mapping pattern reflects the common usage of dictionary ...
...Map: http://commons.apache.org/proper/commons-collections/apidocs/org/apache/commons/collections4/map/CaseInsensitiveMap.html It also has a separate IdentityHashMap: http://docs.oracle.com/javase/6/docs/api/java/util/IdentityHashMap.html C++ The C++ Standard Template Library features an unordered_map with customizable hash and equality functions: http://www.cplusplus.com/reference/unordered_map/unordered_map/ Copyright This document has been placed in the public domain. Source: https://g...
...mapping_impl: dict | NULL _cells: frozenset # Set of indexes of cell and free variables ... def __init__(self, ...): self._name_to_offset_mapping_impl = NULL self._variable_names = deduplicate( self.co_varnames + self.co_cellvars + self.co_freevars ) ... @property def _name_to_offset_mapping(self): "Mapping of names to offsets in local variable array." if self._name_to_offset_mapping_impl is NULL: self....
...Mappings You have decided to make an online version of your game. All of your logic will be in a server, and the UI in a client which will communicate using JSON messages. Via the json module, those will be mapped to Python dictionaries, lists and other builtin objects. Our client will receive a list of dictionaries (parsed from JSON) of actions to take, each element looking for example like these: {"text": "The shop keeper says 'Ah! We have Camembert, yes sir'", "color": "blue"} If the client ...
...mapping between extension codes and names. Second, some large Python projects (e.g. Zope) can be assigned a range of extension codes outside the "private use" range that they can assign as they see fit. The extension registry is defined as a mapping between extension codes and names. When an extension code is unpickled, it ends up producing an object, but this object is gotten by interpreting the name as a module name followed by a class (or function) name. The mapping from names to objects is...
PEP 256 -- Docstring Processing System Framework PEP:256 Title:Docstring Processing System Framework Author:David Goodger <goodger at python.org> Discussions-To:doc-sig at python.org Status:Rejected Type:Standards Track Created:01-Jun-2001 Post-History:13-Jun-2001 Contents Rejection Notice Abstract Road Map to the Docstring PEPs Rationale PyDoc & Other Existing Systems Specification Project Web Site References and Footnotes Copyright Acknowledgements Rejection N...
...mapping from distribution names to extension metadata snippets that are expected to exactly match the metadata of the named distribution in the target installation environment. Each submapping then consists of a mapping from metadata extension names to the exact expected values of a subset of fields. For example, a distribution called fortranlib may publish a different FORTRAN ABI depending on how it is built, and any related projects that are installed into the same runtime environment should u...
...map This PEP does not propose any changes to map, since the use of map with multiple iterable arguments is quite rare. However, this PEP's ruling shall serve as precedent such a future discussion (should it occur). If rejected, the feature is realistically not worth pursuing. If accepted, such a change to map should not require its own PEP (though, like all enhancements, its usefulness should be carefully considered). For consistency, it should follow same API and semantics debated here for zip...
...mapping a single instance to the external reality, where allowing multiple instances to be mapped to the same external resource would create unnecessary difficulty maintaining synchronization among instances. In these cases, a common idiom is to support a cache of instances; a factory function is used to return either a new or existing instance. The difficulty in this approach is that one of two things must be tolerated: either the cache grows without bound, or there needs to be explicit manage...
...mapping, but as they were merely proposed for textual harmonization and still unambiguously map to their respective licenses, they were not included here; LGPLv2 is, however, as it could ambiguously refer to either the distinct v2.0 or v2.1 variants of that license. In addition, for the various special cases, the following mappings are considered canonical and normative for the purposes of this specification: Classifier License :: Public Domain MAY be mapped to the generic License-Expression: L...
...mapping between types and declarators is not static. It can be completely customized by the programmer, but for convenience there are some predefined mappings for some built-in types: Type Declarator object � (REPLACEMENT CHARACTER) int ℕ (DOUBLE-STRUCK CAPITAL N) float ℮ (ESTIMATED SYMBOL) bool ✓ (CHECK MARK) complex ℂ (DOUBLE-STRUCK CAPITAL C) str ✎ (LOWER RIGHT PENCIL) unicode ✒ (BLACK NIB) tuple ⒯ (PARENTHESIZED LATIN SMALL LETTER T) list ♨ (HOT SPRINGS) dict ⧟ (DOUBLE-ENDE...
...mappings. Memory mappings are usually used for large allocations (ex: larger than 256 KB), whereas the heap is used for small allocations. On UNIX, the heap is handled by brk() and sbrk() system calls, and it is contiguous. On Windows, the heap is handled by HeapAlloc() and can be discontiguous. Memory mappings are handled by mmap() on UNIX and VirtualAlloc() on Windows, they can be discontiguous. Releasing a memory mapping gives back immediately the memory to the system. On UNIX, the heap memo...