René's URL Explorer Experiment


Title: 19.2. Typing Basic — Python - from None to AI

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Domain: python3.info

authorMatt Harasymczuk
published2025-01-01
updated2025-12-10
readtime10 minutes
tagspython, intermediate, typing, basic, int, float, complex, bool, none, str, bytes, bytearray

Links:

Python - from None to AI https://python3.info/index.html
Licensehttps://python3.info/LICENSE.html
Installhttps://python3.info/install.html
Python Versionshttps://python3.info/about/versions.html
Python Historyhttps://python3.info/about/history.html
Linkshttps://python3.info/about/links.html
Referenceshttps://python3.info/about/references.html
1. Abouthttps://python3.info/basics/index.html
2. Introductionhttps://python3.info/basics/index.html#introduction
3. Syntaxhttps://python3.info/basics/index.html#syntax
4. Numerichttps://python3.info/basics/index.html#numeric
5. Logichttps://python3.info/basics/index.html#logic
6. Stringshttps://python3.info/basics/index.html#strings
7. Iterableshttps://python3.info/basics/index.html#iterables
8. Mappingshttps://python3.info/basics/index.html#mappings
9. Nestedhttps://python3.info/basics/index.html#nested
10. Unpackhttps://python3.info/basics/index.html#unpack
11. Conditionalhttps://python3.info/basics/index.html#conditional
12. Whilehttps://python3.info/basics/index.html#while
13. Forhttps://python3.info/basics/index.html#for
14. Comprehensionshttps://python3.info/basics/index.html#comprehensions
15. Fileshttps://python3.info/basics/index.html#files
16. Functionshttps://python3.info/basics/index.html#functions
17. Exceptionshttps://python3.info/basics/index.html#exceptions
18. Idiomhttps://python3.info/basics/index.html#idiom
19. OOPhttps://python3.info/basics/index.html#oop
20. Moduleshttps://python3.info/basics/index.html#modules
21. Recaphttps://python3.info/basics/index.html#recap
1. Abouthttps://python3.info/intermediate/index.html
2. Stringhttps://python3.info/intermediate/index.html#string
3. Syntaxhttps://python3.info/intermediate/index.html#syntax
4. Starhttps://python3.info/intermediate/index.html#star
5. Enumhttps://python3.info/intermediate/index.html#enum
6. Matchhttps://python3.info/intermediate/index.html#match
7. Regexhttps://python3.info/intermediate/index.html#regex
8. Datetimehttps://python3.info/intermediate/index.html#datetime
9. Generatorshttps://python3.info/intermediate/index.html#generators
10. Iteratorhttps://python3.info/intermediate/index.html#iterator
11. Serializationhttps://python3.info/intermediate/index.html#serialization
12. Picklehttps://python3.info/intermediate/index.html#pickle
13. TOMLhttps://python3.info/intermediate/index.html#toml
14. CSVhttps://python3.info/intermediate/index.html#csv
15. JSONhttps://python3.info/intermediate/index.html#json
16. Pathlibhttps://python3.info/intermediate/index.html#pathlib
17. Logginghttps://python3.info/intermediate/index.html#logging
18. Moduleshttps://python3.info/intermediate/index.html#modules
19. Typinghttps://python3.info/intermediate/index.html#typing
19.1. Typing Abouthttps://python3.info/intermediate/typing/about.html
19.2. Typing Basichttps://python3.info/intermediate/typing/basic.html
19.2.1. Inthttps://python3.info/intermediate/typing/basic.html#int
19.2.2. Floathttps://python3.info/intermediate/typing/basic.html#float
19.2.3. Complexhttps://python3.info/intermediate/typing/basic.html#complex
19.2.4. Boolhttps://python3.info/intermediate/typing/basic.html#bool
19.2.5. Nonehttps://python3.info/intermediate/typing/basic.html#none
19.2.6. Strhttps://python3.info/intermediate/typing/basic.html#str
19.2.7. Byteshttps://python3.info/intermediate/typing/basic.html#bytes
19.2.8. Bytearrayhttps://python3.info/intermediate/typing/basic.html#bytearray
19.2.9. Use Case - 1https://python3.info/intermediate/typing/basic.html#use-case-1
19.2.10. Assignmentshttps://python3.info/intermediate/typing/basic.html#assignments
19.3. Typing Advancedhttps://python3.info/intermediate/typing/advanced.html
19.4. Typing Iterablehttps://python3.info/intermediate/typing/iterable.html
19.5. Typing Mappinghttps://python3.info/intermediate/typing/mapping.html
19.6. Typing Nestedhttps://python3.info/intermediate/typing/nested.html
19.7. Typing TypedDicthttps://python3.info/intermediate/typing/typeddict.html
19.8. Typing NamedTuplehttps://python3.info/intermediate/typing/namedtuple.html
19.9. Typing Callablehttps://python3.info/intermediate/typing/callable.html
19.10. Typing Typehttps://python3.info/intermediate/typing/type.html
19.11. Typing Aliashttps://python3.info/intermediate/typing/alias.html
19.12. Typing TypeVarhttps://python3.info/intermediate/typing/typevar.html
19.13. Typing Variancehttps://python3.info/intermediate/typing/variance.html
19.14. Typing Annotatedhttps://python3.info/intermediate/typing/annotated.html
19.15. Typing Checkhttps://python3.info/intermediate/typing/package-check.html
19.16. Typing Annotatehttps://python3.info/intermediate/typing/package-annotate.html
20. OOP Dataclasshttps://python3.info/intermediate/index.html#oop-dataclass
1. Abouthttps://python3.info/advanced/index.html
2. Syntaxhttps://python3.info/advanced/index.html#syntax
3. OOP Paradigmhttps://python3.info/advanced/index.html#oop-paradigm
4. OOP Inheritancehttps://python3.info/advanced/index.html#oop-inheritance
5. OOP Polymorphismhttps://python3.info/advanced/index.html#oop-polymorphism
6. OOP Encapsulationhttps://python3.info/advanced/index.html#oop-encapsulation
7. OOP Metaprogramminghttps://python3.info/advanced/index.html#oop-metaprogramming
8. OOP Operatorhttps://python3.info/advanced/index.html#oop-operator
9. FP Paradigmhttps://python3.info/advanced/index.html#fp-paradigm
10. FP Applyhttps://python3.info/advanced/index.html#fp-apply
11. Decoratorshttps://python3.info/advanced/index.html#decorators
12. Async Paradigmhttps://python3.info/advanced/index.html#async-paradigm
13. Async AsyncIOhttps://python3.info/advanced/index.html#async-asyncio
1. Abouthttps://python3.info/performance/index.html
2. Introductionhttps://python3.info/performance/index.html#introduction
3. Transpilationhttps://python3.info/performance/index.html#transpilation
4. Optimizationhttps://python3.info/performance/index.html#optimization
5. Profilinghttps://python3.info/performance/index.html#profiling
6. Case Studyhttps://python3.info/performance/index.html#case-study
7. Threadinghttps://python3.info/performance/index.html#threading
8. Multiprocessinghttps://python3.info/performance/index.html#multiprocessing
9. Extensionshttps://python3.info/performance/index.html#extensions
1. Abouthttps://python3.info/testing/index.html
2. Introductionhttps://python3.info/testing/index.html#introduction
3. Randomhttps://python3.info/testing/index.html#random
4. Syntaxhttps://python3.info/testing/index.html#syntax
5. Doctesthttps://python3.info/testing/index.html#doctest
6. Unittesthttps://python3.info/testing/index.html#unittest
7. Recaphttps://python3.info/testing/index.html#recap
1. Abouthttps://python3.info/ci-cd/index.html
2. DevToolshttps://python3.info/ci-cd/index.html#devtools
3. Distributehttps://python3.info/ci-cd/index.html#distribute
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5. Qualityhttps://python3.info/ci-cd/index.html#quality
6. Securityhttps://python3.info/ci-cd/index.html#security
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2. Qualityhttps://python3.info/devops/index.html#quality
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1. Abouthttps://python3.info/database/index.html
2. Theoryhttps://python3.info/database/index.html#theory
3. ORMhttps://python3.info/database/index.html#orm
4. Normalizationhttps://python3.info/database/index.html#normalization
5. NoSQLhttps://python3.info/database/index.html#nosql
6. SQLhttps://python3.info/database/index.html#sql
7. SQLite3https://python3.info/database/index.html#sqlite3
8. SQLAlchemyhttps://python3.info/database/index.html#sqlalchemy
9. Case Studyhttps://python3.info/database/index.html#case-study
1. Abouthttps://python3.info/design-patterns/index.html
2. Introductionhttps://python3.info/design-patterns/index.html#introduction
3. UMLhttps://python3.info/design-patterns/index.html#uml
4. Creationalhttps://python3.info/design-patterns/index.html#creational
5. Behavioralhttps://python3.info/design-patterns/index.html#behavioral
6. Structuralhttps://python3.info/design-patterns/index.html#structural
7. Functionalhttps://python3.info/design-patterns/index.html#functional
1. Abouthttps://python3.info/numpy/index.html
2. Introductionhttps://python3.info/numpy/index.html#introduction
3. Arrayhttps://python3.info/numpy/index.html#array
4. Attributeshttps://python3.info/numpy/index.html#attributes
5. Randomhttps://python3.info/numpy/index.html#random
6. Indexinghttps://python3.info/numpy/index.html#indexing
7. Operationshttps://python3.info/numpy/index.html#operations
8. Methodshttps://python3.info/numpy/index.html#methods
9. Statisticshttps://python3.info/numpy/index.html#statistics
10. Mathhttps://python3.info/numpy/index.html#math
11. Polynomialhttps://python3.info/numpy/index.html#polynomial
1. Abouthttps://python3.info/pandas/index.html
2. Introductionhttps://python3.info/pandas/index.html#introduction
3. Readhttps://python3.info/pandas/index.html#read
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6. DataFramehttps://python3.info/pandas/index.html#dataframe
7. Datehttps://python3.info/pandas/index.html#date
8. Case Studyhttps://python3.info/pandas/index.html#case-study
1. Abouthttps://python3.info/matplotlib/index.html
2. Introductionhttps://python3.info/matplotlib/index.html#introduction
3. Figurehttps://python3.info/matplotlib/index.html#figure
4. Stylehttps://python3.info/matplotlib/index.html#style
5. Charthttps://python3.info/matplotlib/index.html#chart
6. Case Studyhttps://python3.info/matplotlib/index.html#case-study
1. Moduleshttps://python3.info/stdlib/index.html
2. Collectionshttps://python3.info/stdlib/index.html#collections
3. Mathhttps://python3.info/stdlib/index.html#math
4. Localehttps://python3.info/stdlib/index.html#locale
5. XMLhttps://python3.info/stdlib/index.html#xml
6. Operating Systemhttps://python3.info/stdlib/index.html#operating-system
7. Stringhttps://python3.info/stdlib/index.html#string
8. Builtinhttps://python3.info/stdlib/index.html#builtin
9. Typehttps://python3.info/stdlib/index.html#type
10. Loophttps://python3.info/stdlib/index.html#loop
11. TkInterhttps://python3.info/stdlib/index.html#tkinter
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2. Protocolhttps://python3.info/network/index.html#protocol
3. Webhttps://python3.info/network/index.html#web
4. Transporthttps://python3.info/network/index.html#transport
5. Case Studyhttps://python3.info/network/index.html#case-study
1. Abouthttps://python3.info/webapp/index.html
2. HTTPhttps://python3.info/webapp/index.html#http
3. RESThttps://python3.info/webapp/index.html#rest
4. Architecturehttps://python3.info/webapp/index.html#architecture
5. Authhttps://python3.info/webapp/index.html#auth
1. Abouthttps://python3.info/django/index.html
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3. Setuphttps://python3.info/django/index.html#setup
4. Settingshttps://python3.info/django/index.html#settings
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12. Formshttps://python3.info/django/index.html#forms
13. Managehttps://python3.info/django/index.html#manage
14. Middlewarehttps://python3.info/django/index.html#middleware
15. Localehttps://python3.info/django/index.html#locale
16. Utilshttps://python3.info/django/index.html#utils
17. Authhttps://python3.info/django/index.html#auth
18. APIhttps://python3.info/django/index.html#api
19. Ninjahttps://python3.info/django/index.html#ninja
20. Testshttps://python3.info/django/index.html#tests
21. Appshttps://python3.info/django/index.html#apps
22. Deployhttps://python3.info/django/index.html#deploy
1. Abouthttps://python3.info/fastapi/index.html
2. Introductionhttps://python3.info/fastapi/index.html#introduction
3. FastAPIhttps://python3.info/fastapi/index.html#fastapi
4. Pydantichttps://python3.info/fastapi/index.html#pydantic
5. Databasehttps://python3.info/fastapi/index.html#database
6. Authhttps://python3.info/fastapi/index.html#auth
7. DevOpshttps://python3.info/fastapi/index.html#devops
8. Case Studyhttps://python3.info/fastapi/index.html#case-study
1. Abouthttps://python3.info/data-science/index.html
2. Jupyterhttps://python3.info/data-science/index.html#jupyter
3. Pythonhttps://python3.info/data-science/index.html#python
4. Visualizationhttps://python3.info/data-science/index.html#visualization
5. Scipyhttps://python3.info/data-science/index.html#scipy
6. Geopandashttps://python3.info/data-science/index.html#geopandas
1. Abouthttps://python3.info/machine-learning/index.html
2. Introductionhttps://python3.info/machine-learning/index.html#introduction
3. Sklearnhttps://python3.info/machine-learning/index.html#sklearn
4. Model Qualityhttps://python3.info/machine-learning/index.html#model-quality
5. Decision Treeshttps://python3.info/machine-learning/index.html#decision-trees
6. Regressionshttps://python3.info/machine-learning/index.html#regressions
7. K-Nearest Neighborshttps://python3.info/machine-learning/index.html#k-nearest-neighbors
8. Bayeshttps://python3.info/machine-learning/index.html#bayes
9. Support Vector Machineshttps://python3.info/machine-learning/index.html#support-vector-machines
10. Clusteringhttps://python3.info/machine-learning/index.html#clustering
11. Neural Networkshttps://python3.info/machine-learning/index.html#neural-networks
12. Referenceshttps://python3.info/machine-learning/index.html#references
13. Articleshttps://python3.info/machine-learning/index.html#articles
1. Abouthttps://python3.info/ai/index.html
2. Introductionhttps://python3.info/ai/index.html#introduction
1. Paradigmhttps://python3.info/oop/index.html
2. Pythonhttps://python3.info/oop/index.html#python
1. Englishhttps://python3.info/dragon/index.html
2. Polishhttps://python3.info/dragon/index.html#polish
3. ADRhttps://python3.info/dragon/index.html#adr
Python - from None to AIhttps://python3.info/index.html
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1. Abouthttps://python3.info/intermediate/index.html
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