PYTHON PRACTICE PROBLEMS, EXERCISES, PROJECTS, TESTS, CHALLENGES…
1) Snakify
 Beginner
 50 exercises: input, print, integers, loops, conditions, strings, lists, functions.
2) CodeClub
 Beginners (kids)
 12 Projects: rock paper scissors game, encryption program to send secret messages, create own passwords, plot ISS, program to split players into 2 teams and so on.
3) Edabit
 Beginners
 100 Exercises: last item in an array, even/odd number, word count, reverse string order, alphabet soup, repeating letters, factorial, sort numbers, phone number formatting, etc.
4) How to think like a computer scientist (Theory & exercises, PDF book)
 Beginner
 150 exercises & labs: functions, files ,loops, lists, turtle graphics, strings, classes and objects, GUI, event driven programming, exceptions, dictionaries.
5) PySchools (Login required)
 Beginner – Intermediate
 150 exercises: functions, conditionals, loops, lists, strings, classes, tuples, regex, builtin functions, dictionaries.
6) University of Helsinki (PDF, to see all exercises change number in the browser bar)

 Beginner
 12 exercises: dictionaries exercises. Functions with loops on dictionaries, function to invert a dictionary.
7) Zarkonnen

 Beginner
 8 text exercises: sum of lengths of names, shortest names in text, convert a number to its string, sort names in text alphabetically, etc.
8) GITHUB Jerry Git (Jupyter Notebooks)
 Beginner
 15 Exercises: fill in the blanks (conditionals), find bugs in code, create and merge dictionaries, using custom exceptions, count average length of words in a sentence, lists, function to turn vowels in uppercase and consonants inlower case, create test case for a function and so on.
8) Hackerrank
 Beginner – Intermediate
 150 Exercises: strings, sets, maths, loops, collections, dates, exceptions, classes, regex, XML.
9) University of California (Physics)
 Beginner – Intermediate
 40 exercises: lists, functions, loops, modules, conditionals, linear algebra, statistics.
10) Python School
 Beginner – Intermediate
 40 Exercises + problems: math, maze game, selection, making a quiz, iteration, menu program, functions.
11) CodeChef
 Beginner – Easy – Intermediate – Advanced
 200 Challenges & problems.
12) California Polytechnic State University San Luis Obispo
 Beginner Intermediate
 15 Programming problems: program of treasure hunt, chess queen attack, program for secret messages, turn roman numbers into arabic, phone words program, calculation of bowling match scores, etc.
13) Code Abbey
 Beginner – Intermediate
 50 Problems: rounding, sum of digits, average in array, modular calculator, double dice roll, mortgage calculator, star medals, lucky tickets, etc.
14) Massachusets Institute of Technology (MIT)
 Beginner – Intermediate
 40 exercises + 2 projects + exam: math module, quadratic formula, random function, nims/stones games, lists, report card function, list comprehensions, structures, OOP, inheritance.
15) Programming for biologists
 Beginner – Intermediate
 150 exercises: databases, expressions and variables, loops, functions, graphics, list comprehension,OOP, Scientific Python.
16) Practice Python
 Beginner – Intermediate
 36 exercises: list comprehensions, list remove duplicates, element search, write to a file, draw a game board, max of three, hangman, birthday plots, odd or even, functions, modules.
17) Coderbyte
 Beginner – Intermediate
 200 Exercises: letter capitalize, time convert, vowel square, longest word, coin determiner, stock picker, matrix chains, character removal, etc.
18) W3Resource
 Beginner – Intermediate
 400 Exercises: strings, lists, functions, loops, conditionals, date time, data structure, recursion, math,regex, numpy, pandas.
19) Norwegian Center of Excellence
 Beginner – Intermediate
 10 scientific Python exercises: maths, loops, functions, combine text and numbers, plot a function, numpy.
20) Simpliv LLC (Basic Python interview questions)
 Beginner – Intermediate
 50 Interview questions: theory questions and exercises
20) PROGRAMIZ
 Beginner – Intermediate
 50 Exercises: introduction, functions, data type, files.
 Find square root, generate random numbers, display multiplication table, find sum of natural numbers, convert decimal to binary, find factors of number, display calendar, add two matrices, find size of an image, count number of vowels, merge mails, etc.
20) Exercism
 Intermediate
 40 Problems: word count, calculate date of meetups, robot simulator, list without nulls, determine list is a sublist, type of triangle, zebra puzzle, implement binary search algorithm, etc.
21) Oxford Cambridge and RSA (PDF)
 Intermediate
 20 Code challenges: email validator program, password reset program, quiz application, count words/vowels in a string, shopping list tracker program, etc.
22) Ynon Perek
 Intermediate
 40 Examples: text processing, OS integration, functions, generators, classes, modules, exceptions, lists, multiprocessing,
23) Liverpool University, Computer Science
 Intermediate
 22 Problems: compund interest code, lower to upper case program, time to fill swimming pool, calculator, area and circunference calculation, distance conversion, load data into dictionaries, triangle recognition, etc.
23) Harvard University. Course of Data Science (CS109)
 Intermediate – Advanced
 5 Assignments, 10 labs: data cleaning, web scrapping, Pandas, Matplotlib libraries, linear regression (SciKit learn), cross validation, map reduce, etc.
24) GITHUB.TVTRAN (Project based learning Data Science)
 Intermediate – Advanced
 50 Examples: web scrapping (Selenium), build a miroblog&webapp with Flask, buid a RESTful microservice, build a reddit bot, sentiment analysis, recommendation systems, Linear regression, classification problem, deep learning.
24) Project Euler
 Advanced
 800 Exercises: coding math problems.
 Advanced
 200 exercises & interview questions: maths, searching, classic algorithms, astronomy, prime numbers, fundamentals of computing, arithmetic, computational geometry, cryptography, data processing, games, graphs.
26) German Neuroinformatics Node (PDF)
 Advanced
 8 Problems: write a decorator to cache function invocation results, generator functions, write a file browser, plugin registration system and so on.
27) Labri (Numpy library)
 Intermediate
 90 Numpy exercises
QUICK SURVEY
1) Wiki
 Intermediate
 8 Projects: scrabble, twitter API, Flash card, plotting Data, graphical game.
2) Michigan University. Computer Science and Engineering
 Beginner – Intermediate
 120 projects: functions, lists, dictionaries, classes.
3) Knight Lab
 Beginner – Intermediate
 5 mini projects.
4) Codewars (Login required)
 Beginner – Intermediate – Advanced
5) Hackerearth (Login required)
 Advanced
6) Al Zimmermann’s Programming Contests
 Advanced
 12 challenges
7) Code kata (No solution)
 Advanced
 21 Challenges
8) University of Applied Sciences (Berner Fachhochschule)
 Intermediate – Advanced
 50 logic programming exercises.
9) Python Programming Facebook Group
 Project ideas
 HOW TO INSTALL PYTHON. YOUTUBE (3 min)Views: 16
 Absolute beginners
 Python and ATOM( text editor) installation tutorial
RECOMENDED COURSES. BEGINNER
1) The new Boston (56 videos, 8 min)
2) Kjd Electronics (9 videos, 10 min)
3) Derek Banas (36 videos, 40 min)
4) MIT (24 videos, 50 min. 2008)
5) Corey Schafer (59 videos, 18 min)
7) Socratica (30 videos, 3 min)
If you know a blog or website with proper exercises or challenges, please share with us!
Need python classes
i need to learn and practice python
I am not very fantastic with English but I find this real easygoing to translate.