Les deux révisions précédentes Révision précédente Prochaine révision | Révision précédente |
teaching:progappchim:notions_avancees [2020/03/12 10:25] – villersd | teaching:progappchim:notions_avancees [2023/05/02 10:36] (Version actuelle) – [Générateurs et "yield"] villersd |
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===== Itérateurs ===== | ===== Itérateurs ===== |
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| ==== Itertools, zip,... ==== |
| * [[https://medium.com/techtofreedom/7-levels-of-using-the-zip-function-in-python-a4bd22ee8bcd|7 Levels of Using the Zip Function in Python]] |
| * itertools.cycle() est une méthode utile pour répéter ou parcourir sans fin les éléments d'une liste ou d'une table itérativitertools.accumulate() |
| * itertools.accumulate prend un itérable et une fonction d'accumulation, puis renvoie un itérateur. |
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===== Générateurs et "yield" ===== | ===== Générateurs et "yield" ===== |
* [[http://code.activestate.com/recipes/580628-pluggable-python-generators/]] | * [[http://code.activestate.com/recipes/580628-pluggable-python-generators/]] |
* [[http://www.datadependence.com/2016/08/pythonic-code-video-series-yield-generators/|Processing Large Data Sets With Yield and Generators]] | * [[http://www.datadependence.com/2016/08/pythonic-code-video-series-yield-generators/|Processing Large Data Sets With Yield and Generators]] |
| * [[https://levelup.gitconnected.com/return-vs-yield-in-python-a-short-comic-f714465a0e92|Return VS Yield in Python — A Short Comic]] Liu Zuo Lin, 04/2023, Medium |
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===== Liste en compréhension ===== | ===== Liste en compréhension ===== |
* [[https://www.datacamp.com/community/tutorials/python-list-comprehension]] | * [[https://www.datacamp.com/community/tutorials/python-list-comprehension]] |
* [[https://gist.github.com/bearfrieze/a746c6f12d8bada03589]] | * [[https://gist.github.com/bearfrieze/a746c6f12d8bada03589]] |
| * [[https://medium.com/code-85/a-beginners-guide-to-python-list-comprehensions-7dbb0039f065|A Beginner’s Guide to Python List Comprehensions]] (Jonathan Hsu, Medium, 23/04/2020) |
| * [[https://iam-akshay.medium.com/python-one-liner-superb-tricks-c611aad98553|Python one-liner superb tricks]] Akshay Jain, Medium, 16/04/2022 |
| * [[https://theanup.medium.com/10-powerful-python-one-liners-for-daily-use-8733dac0bc2c|15 Powerful Python One-Liners for Daily Use]] Anup Das, Medium, 22/11/2022 |
| |
| ==== One-line if - then - else (ternary operator) ==== |
| <code python> |
| u = 10 |
| v = 100 |
| reponse = "u plus grand que v" if u > v else "v plus grand ou égal à u" |
| print(reponse) |
| </code> |
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| ===== map, filter, reduce, lambda, pipe ===== |
| * [[https://towardsdatascience.com/write-clean-python-code-using-pipes-1239a0f3abf5|Write Clean Python Code Using Pipes - A Short and Clean Approach to Processing Iterables]] Khuyen Tran, medium, october 2021 |
| * [[https://towardsdatascience.com/comparing-list-comprehensions-vs-built-in-functions-in-python-which-is-better-1e2c9646fafe|Comparing List Comprehensions vs. Built-In Functions in Python: Which Is Better? |
| An in-depth analysis of syntax, readability, and performance]] Thomas A Dorfer, Medium, 21/03/2023 |
| * ... |
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| ===== Walrus operator ===== |
| FIXME |
| |
| ===== Le rôle du caractère underscore en Python ===== |
| * [[https://www.datacamp.com/community/tutorials/role-underscore-python|Role of Underscore(_) in Python Tutorial - In this tutorial, you're going to learn about the uses of underscore(_) in python]] Hafeezul Kareem Shaik, Medium (DataCmap) October 26th, 2018 |
| * [[https://www.geeksforgeeks.org/underscore-_-python/]] |
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===== Transformations et manipulations de chaînes (string) ===== | ===== Transformations et manipulations de chaînes (string) ===== |
* replace() : remplacement d'une sous-chaîne | * replace() : remplacement d'une sous-chaîne |
* split() : découpe en une liste de sous-chaînes. Le caractère utilisé par défaut est l'espacement. Le nombre de découpe peut être précisé. rsplit() permet de commencer par la droite. | * split() : découpe en une liste de sous-chaînes. Le caractère utilisé par défaut est l'espacement. Le nombre de découpe peut être précisé. rsplit() permet de commencer par la droite. |
* partition() : découpe particulière | * partition() : découpe particulière → myString.partition("search string") renvoie un tuple de trois sous-chaînes : ( texte précédent, première occurence de la sous-chaîne cherchée, texte à la suite) |
* strip(), lstrip(), rstrip() : élimine des caractères en début et/ou fin, par défaut les espacements | * strip(), lstrip(), rstrip() : élimine des caractères en début et/ou fin, par défaut les espacements |
* zfill(n) : ajoute des zéros devant pour arriver à une longueur donnée | * zfill(n) : ajoute des zéros devant pour arriver à une longueur donnée |
* swapcase() : inverse capitales et bas de casse | * swapcase() : inverse capitales et bas de casse |
* startswith('fizz'), endswith('buzz'), 'fizz buzz' in test_string : renvoie True ou False | * startswith('fizz'), endswith('buzz'), 'fizz buzz' in test_string : renvoie True ou False |
| |
| ===== Manipulations de fichiers ===== |
| * module os |
| * [[https://towardsdatascience.com/8-must-know-file-system-operations-in-python-7dc185daeccd|8 Must-Know File System Operations In Python - The essential for Python in tasks automation apps]] Christopher Tao, Medium, 08/02/2021 |
| * [[https://www.programiz.com/python-programming/directory|Python Directory and Files Management]] (tutorial) |
| * official documentation : [[https://docs.python.org/3/library/os.html]] |
| * [[https://towardsdatascience.com/10-python-file-system-methods-you-should-know-799f90ef13c2|10 Python File System Methods You Should Know - Manipulate Files and Folders With os and shutil]] Jeff Hale, Medium, Feb 15, 2019 (pathlib, OS, shutil) |
| * [[https://medium.com/better-programming/the-top-10-file-handling-techniques-in-python-cf2330a16e7 : The Top 10 File Handling Techniques in Python - Make working with files easier]] Yong Cui, Aug 5, 2020 |
| * [[https://medium.com/python-in-plain-english/manipulating-file-paths-with-python-72a76952b832]] ?? |
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===== Expressions rationnelles (régulières) ===== | ===== Expressions rationnelles (régulières) ===== |
* [[http://linuxfr.org/news/travailler-avec-des-expressions-rationnelles]] | * [[http://linuxfr.org/news/travailler-avec-des-expressions-rationnelles]] |
* [[https://fr.wikipedia.org/wiki/Expression_rationnelle]] | * [[https://fr.wikipedia.org/wiki/Expression_rationnelle]] |
| * [[http://www.analyticsvidhya.com/blog/2015/06/regular-expression-python/|Beginners Tutorial for Regular Expressions in Python]] |
| * [[https://medium.com/@valeria.aynbinder.edu/python-regular-expressions-cheat-sheet-cd0992c36f6f|Python Regular Expressions — cheat sheet - Many code examples + useful tips]] Valeria Aynbinder, Medium, 17/03/2022 |
* ... | * ... |
===== Décorateurs ===== | ===== Décorateurs ===== |
* [[http://nbviewer.ipython.org/url/bender.astro.sunysb.edu/classes/python-science/lectures/python-classes.ipynb]] | * [[http://nbviewer.ipython.org/url/bender.astro.sunysb.edu/classes/python-science/lectures/python-classes.ipynb]] |
* [[http://jeffknupp.com/blog/2014/06/18/improve-your-python-python-classes-and-object-oriented-programming/]] | * [[http://jeffknupp.com/blog/2014/06/18/improve-your-python-python-classes-and-object-oriented-programming/]] |
| |
| ==== Divers ==== |
| * Définir ses propres types : stack, queue, tree + algorithms : [[https://towardsdatascience.com/data-structures-algorithms-in-python-68c8dbb19c90|Data Structures & Algorithms in Python]] by Papa Moryba Kouate, Aug, 2020, Towards Data Science |
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===== Closures ===== | ===== Closures ===== |
* [[http://stackoverflow.com/questions/36636/what-is-a-closure]] | * [[http://stackoverflow.com/questions/36636/what-is-a-closure]] |
* [[http://programmers.stackexchange.com/questions/40454/what-is-a-closure]] | * [[http://programmers.stackexchange.com/questions/40454/what-is-a-closure]] |
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===== Programmation fonctionnelle ===== | ===== Programmation fonctionnelle ===== |
* [[http://www.pysnap.com/functional-programming-in-python/|Functional Programming in Python]] (FIXME) | * [[http://www.pysnap.com/functional-programming-in-python/|Functional Programming in Python]] (FIXME) |
* Map, filter, reduce : | * Map, filter, reduce : |
* [[https://medium.com/better-programming/how-to-replace-your-python-for-loops-with-map-filter-and-reduce-c1b5fa96f43a|How To Replace Your Python For Loops with Map, Filter, and Reduce - Write more semantic code with functional programming]] | * [[https://medium.com/better-programming/how-to-replace-your-python-for-loops-with-map-filter-and-reduce-c1b5fa96f43a|How To Replace Your Python For Loops with Map, Filter, and Reduce - Write more semantic code with functional programming]] |
| |
| ===== Débogage, debugging ===== |
| * [[https://towardsdatascience.com/stop-using-print-to-debug-in-python-use-icecream-instead-79e17b963fcc|Stop Using Print to Debug in Python. Use Icecream Instead]] |
| |
| ===== Sous le capot (bytecode,...) ===== |
| * [[https://medium.com/swlh/efficiently-checking-for-an-empty-list-in-python-76b76099fbd3|Efficiently Checking for an Empty List in Python]] Frank Scholl, Medium, Nov 22, 2019 → comparaison des bytecodes Python/C générés pour 3 solutions proposées |
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===== Performances, temps d'exécution, ... ===== | ===== Performances, temps d'exécution, ... ===== |
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===== Tests unitaires ===== | ===== Tests unitaires ===== |
| |
| ===== Python Scripting ===== |
| * [[https://www.datacamp.com/community/tutorials/running-a-python-script|How to Run Python Scripts]] |
| |
| ===== Interface utilisateur graphique (GUI) ===== |
| * [[https://medium.com/analytics-vidhya/how-to-build-your-first-desktop-application-in-python-7568c7d74311|How to build your first Desktop Application in Python]] Ampofo Amoh - Gyebi, Medium, 12/12/2020 |
| |
| ===== emails ===== |
| smtplib et poplib : |
| * [[https://twitter.com/driscollis/status/1508506999268552713]] |
| * [[https://twitter.com/driscollis/status/1508570173606928386]] |
| |
| <code python> |
| import smtplib |
| |
| HOST = "smtp.mydomain.com" |
| SUBJECT = "Test email from Python" |
| TO = "mike@mydomain.com" |
| FROM = "python@mydomain.com" |
| text = "blah blah blah" |
| BODY = "\r\n".join(( |
| f"From: {FROM}", |
| f"To: {TO}", |
| f"Subject: {SUBJECT}", |
| "", |
| text) |
| ) |
| server = smtplib.SMTP(HOST) |
| server.sendmail(FROM, [TO], BODY) |
| server.quit() |
| </code> |
| |
| <code python> |
| import poplib |
| |
| mailbox = poplib.POP3('pop3.host.com') |
| mailbox.user("USERNAME") |
| mailbox.pass_("PASSWORD") |
| numMessages = len(mailbox.list()[1]) |
| for i in range(numMessages): |
| for j in mailbox.retr(i+1)[1]: |
| print(j) |
| </code> |
| |
| ===== Création et gestion de packages ===== |
| * [[https://medium.com/jacklee26/how-to-create-the-first-python-package-de6464799bc3|How to create the first python package]] ChenChih, Medium, Dec 18, 2021 |
| |
| ===== Références ===== |
| * [[https://dacus-augustus.medium.com/top-12-most-important-python-concepts-24f59945a409|Top 12 most important Python concepts]] Dacus Augustus, Medium, Feb 23 2021 |
| * [[https://medium.com/pythonland/10-advanced-python-tricks-to-write-faster-cleaner-code-f9ee76fa878f|10 Advanced Python Tricks To Write Faster, Cleaner Code - From slotted classes to replacing lists with tuples]] Erik van Baaren, Medium, 30/06/2021 |
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