Exit with a status code
Write a Python program that exits with code 1 on failure and show the code the caller sees. Step-by-step explanation, colour-coded code and real output.
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298 articles · page 6 of 25 · Clear filtersSum numbers from the command line
Write a Python program that adds the numbers passed as arguments. Step-by-step explanation, colour-coded code and real output.
Read command-line arguments
Write a Python program that prints its command-line arguments. Step-by-step explanation, colour-coded code and real output.
Python Collections Programs with Solutions
20 Python collections programs with solutions: Counter, defaultdict, deque, namedtuple, OrderedDict and ChainMap, each explained with real output.
Palindrome check with deque
Write a Python program to check palindromes by removing characters from both ends of a deque. Step-by-step explanation, colour-coded code and real output.
Invert a dictionary with duplicates
Write a Python program to invert a grade dictionary into grade -> students. Step-by-step explanation, colour-coded code and real output.
Top three scorers
Write a Python program to total player runs from match records and show the top 3. Step-by-step explanation, colour-coded code and real output.
Expand a Counter
Write a Python program to list every item of a Counter as many times as its count. Step-by-step explanation, colour-coded code and real output.
Layered settings with ChainMap
Write a Python program that looks up settings in command-line, environment and default layers. Step-by-step explanation, colour-coded code and real output.
LRU cache with OrderedDict
Write a small least-recently-used cache that holds 2 items. Step-by-step explanation, colour-coded code and real output.
namedtuple helpers
Write a Python program using `_asdict`, `_replace` and `_make`. Step-by-step explanation, colour-coded code and real output.
Records with namedtuple
Write a Python program to store employee records as named tuples. Step-by-step explanation, colour-coded code and real output.
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