Problems

24 problems for Python Developer. Read any of them; sign in to code, run and submit.

Count word frequenciesStrings · Dictionaries~8 minBeginner
Flatten nested batchesLists and tuples · Loops and control flow~5 minBeginner
Format bytes for humansFormatting output · Functions~8 minBeginner
Generate URL slugsStrings~8 minBeginner
Leaderboard top NSorting · Lists and tuples~7 minBeginner
Parse a .env fileFiles and configuration · Strings · Dictionaries~10 minBeginner
Reverse the word orderStrings · Lists and tuples~5 minBeginner
Split work into batchesLists and tuples · Loops and control flow~5 minBeginner
Summarise test resultsTesting and test data · Dictionaries~7 minBeginner
Transpose a metrics tableLists and tuples~5 minBeginner
Check balanced brackets in a templateStacks and queues · Strings~10 minEasy
Group anagramsHashing · Dictionaries · Sorting~10 minEasy
Parse a CSV export into typed recordsETL pipelines · Parsing text~12 minEasy
Parse INI sectionsFiles and configuration · Parsing text · Dictionaries~12 minEasy
Sort semantic versionsSorting · Parsing text~12 minEasy
Build a lazy generator pipelineGenerators and laziness · Time and space complexity~20 minMedium
Build an LRU cacheCaching · Classes and objects · Time and space complexity~20 minMedium
Compute an invoice with dataclassesDataclasses · Classes and objects · Formatting output~20 minMedium
Fetch concurrently with a limitasyncio · Threads and concurrency~20 minMedium
Run health checks in parallel threadsThreads and concurrency · Exceptions~20 minMedium
Time code with a context managerContext managers · Classes and objects · Exceptions~15 minMedium
Write a retry decoratorDecorators · Retries and backoff · Exceptions~20 minMedium
Report vulnerable dependenciesSecurity automation · Parsing text · Sorting~30 minHard
Resolve package versionsGraphs · Parsing text · Sorting~40 minHard