Property talk:P12468

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PyPI trove classifier
standardized classification system for software, used and maintained by the Python Package Index

Represents	PyPI trove classifier (Q113568933)
Data type	String
Domain	human (Q5), natural language (Q33742), software (Q7397), operating system (Q9135) or programming language (Q9143)
Allowed values	([\w\s]+)(::([\w\s]+)::([\w\s]+))?
Example	MIT License (Q334661) → License :: OSI Approved :: MIT License Flask (Q289281) → Framework :: Flask macOS (Q14116) → Environment :: MacOS X Operating System :: MacOS English (Q1860) → Natural Language :: English Rust (Q575650) → Programming Language :: Rust File Transfer Protocol (Q42283) → Topic :: Internet :: File Transfer Protocol (FTP)
Source	https://pypi.org/classifiers/
See also	PyPI project (P5568)
Lists	Items with the most statements of this property Count of items by number of statements (chart) Items with the most statements Items with the fewest statements Count of items by number of sitelinks (chart) Items with the most sitelinks Items with the most sitelinks, but no link to one Wikipedia (sample: Welsh Wikipedia, cywiki) Items with the fewest sitelinks Most linked wikis Items with the most identifier properties Items with no other statements Most recently created items Items with novalue claims Items with unknown value claims Usage history (total) Usage history (main statement) Map of people by place values: place of birth educated at work location residence place of death place of burial January 1st dates People with date of birth on January 1 People with date of death on January 1 People with both dates on January 1 Database reports/Constraint violations/P12468 Map Random list
Proposal discussion	Proposal discussion
Current uses	Total 20 Main statement 13 out of 805 (2% complete) 65% of uses Qualifier 7 35% of uses
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Type “human (Q5), natural language (Q33742), software (Q7397), operating system (Q9135), programming language (Q9143)”: item must contain property “instance of (P31), subclass of (P279)” with classes “human (Q5), natural language (Q33742), software (Q7397), operating system (Q9135), programming language (Q9143)” or their subclasses (defined using subclass of (P279)). (Help)

List of violations of this constraint: Database reports/Constraint violations/P12468#Type Q5, Q33742, Q7397, Q9135, Q9143, hourly updated report, SPARQL

Scope is as main value (Q54828448), as reference (Q54828450): the property must be used by specified way only (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P12468#Scope, SPARQL

Format “[A-Za-z]+\/[0-9A-F]+”: value must be formatted using this pattern (PCRE syntax). (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P12468#Format, SPARQL

Single value: this property generally contains a single value. (Help)

List of violations of this constraint: Database reports/Constraint violations/P12468#Single value, hourly updated report, SPARQL

Distinct values: this property likely contains a value that is different from all other items. (Help)

List of violations of this constraint: Database reports/Constraint violations/P12468#Unique value, hourly updated report, SPARQL (every item), SPARQL (by value)

Allowed entity types are Wikibase item (Q29934200): the property may only be used on a certain entity type (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P12468#Entity types