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Python

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Posts: 325 from 15 May 2020 to 26 Oct 2026
Posting: weekly (34 in the last year)
Kind: company blog
Feed: https://www.pythonmorsels.com/topics/feed/

2026 30

26 Octf-string formatter
26 Octstrptime
13 OctFeature History
9 OctPython 3.15's best new features
9 OctView All Screencasts →
9 OctRead All Articles →
28 SepSlicing lazy iterables with islice New
4 SepCreating temporary files in Python
27 AugWhen to use NotImplemented
7 AugGoose typing New
4 AugQuacking like a mapping New
29 JulBinary search in Python with bisect
27 JulRunning subprocesses in Python
10 JunStacks and queues in Python
27 MaySelecting random values in Python
22 MayWhat types of exceptions should you catch?
19 AprThe list extend method
14 MarAssigning to slices
12 MarStandard error
11 MarMaking friendly classes
4 MarInvent your own comprehensions
2 MarWhen are classes used in Python?
25 FebLexicographical ordering
13 FebSetting default dictionary values
10 Febswitch-case in Python? It's not match-case!
4 FebIs it a class or a function?
27 JanAll iteration is the same
16 JanSelf-concatenation
4 JanDebugging with f-strings
1 JanImplicit string concatenation

2025 44

16 DecEmbrace whitespace
2 DecWrapping text output
11 NovUnnecessary parentheses
4 Nov__slots__ for optimizing classes
28 Oct__dict__: where Python stores attributes
20 OctT-strings: Python's Fifth String Formatting Technique?
7 OctSince when?
7 OctPython 3.14's best new features
29 SepWhy splitlines() instead of split("\n")?
16 SepNested list comprehensions
8 SepPython REPL Shortcuts & Features
6 SepRemoving list items
3 SepThe power of Python's print function
31 AugChecking your operating system
12 AugChecking for string prefixes and suffixes
8 AugRe-raising exceptions
5 AugUsing dictionaries
31 JulNested functions
22 JulDon't call dunder methods
1 JulDecorators with optional arguments
26 JunBreaking out of a loop
20 JunPython's "while" loop
17 JunEquality with data structures
10 JunDecorators can return anything
3 JunAvoid indexes
2 JunEnclosing scope
26 MayLooping in reverse
21 MayCommon decorators included with Python
6 MaySorting iterables
15 AprPractical uses of sets
7 AprMutable default arguments
3 AprUnpacking arbitrary keyword arguments into a function call
26 MarChecking whether iterables are equal
18 MarRefactoring long boolean expressions
13 MarAlternatives to Python's "break" statement
3 MarThe features of Python's help() function
20 FebMultiline strings
12 FebAvoid over-commenting
10 FebNewlines and escape sequences
6 FebPython Terminology
20 Jandatetime arithmetic
14 JanPython's range() function
14 JanUppercasing and lowercasing
10 JanThe benefits of trailing commas

2024 44

19 DecMerging dictionaries
14 DecStoring attributes on functions
18 NovPython's pathlib module
14 NovInspecting objects
23 OctCustomizing dataclass fields
18 OctCustomizing dataclass initialization
7 OctPython 3.13's best new features
30 SepConverting a string to a datetime
27 SepThe string split method
21 SepPrompting a user for input
17 SepUnderstanding help()
14 SepBoolean operators
8 SepCommenting
6 SepCreating Python programs
30 AugFunctions and Methods
28 AugArithmetic
20 AugChecking for an empty list
9 AugCustomizing dataclasses with arguments
2 AugHow to make a tuple
2 AugWhat are dataclasses?
20 JulUsing "else" in a comprehension
12 JulWhat are lists in Python?
4 JulStrings
19 JunPython's getattr function
13 JunData structures contain pointers
4 JunPython's __setattr__ method
3 JunPython's many command-line utilities
28 MayEquality versus identity
18 MayAssignment vs. Mutation
11 MaySupporting containment checks
2 MayVariables are pointers
24 AprOverloading all attribute lookups: __getattribute__ versus __getattr__
19 AprMultiline comments
16 AprPython Big O: the time complexities of different data structures
5 AprPython's http.server module
22 MarUnnecessary else statements
19 MarEvery dunder method
8 MarPython list slicing (with examples)
29 FebThe contextmanager decorator
23 FebArithmetic Dunder Methods
21 FebThe list insert method
5 FebTextIOWrapper‽ converting files to strings
22 JanNone
8 JanUsing the Python REPL

2023 41

28 DecChained comparisons
18 Deczip with different length iterables
15 DecDescriptors
27 NovInspect modules interactively
20 NovWorking with JSON data
14 NovSolving programming exercises
6 NovBooleans are integers
30 OctReading from standard input
25 OctPython's lambda functions
16 OctWhat are metaclasses?
9 OctPython's assert statement
2 OctAre dictionaries ordered in Python?
4 SepWhat is recursion?
28 AugPython's range is a lazy sequence
21 AugUsing "else" with a loop
14 AugReserved words
7 AugCreating a context manager
31 JulUsing attributes on classes
17 JulPython's next() function
10 JulThe difference between return and print
30 JunDjango June 2023: Tips & Discussions
27 JunCounting occurrences in Python with collections.Counter
7 JunFixing circular imports
9 MaySubstrings in Python: checking if a string contains another string
1 MayHow to assign a variable
25 AprShort-circuit evaluation
10 AprDynamically importing modules
3 AprHow to make a sequence
29 MarPython's any() and all() functions
27 MarImplementing slicing
20 MarWhat is a context manager?
13 MarFunction overloading
8 MarRemove duplicates from a list
6 MarLooping over dictionaries
28 FebPython's list constructor: when and how to use it
28 FebWhat is a mapping?
14 FebWriting a CSV file
6 FebConditional operators
23 JanReading a CSV file
13 JanRemoving a dictionary key
2 JanSingletons

2022 54

20 DecPython's "if" statement
12 DecDynamically evaluating code
8 DecList containment checks
14 NovPython's ternary operator
7 Novbreakpoint: debugging
31 OctSyntaxError: invalid syntax
28 OctHow does file buffering work?
17 OctWhat does // mean in Python?
10 OctUnindent multiline strings in Python with dedent
8 OctInstalling Python packages with pip
3 OctFixing TypeError: can only concatenate str (not "int") to str
19 Sepreduce() in Python and why to avoid it
16 SepCreating a mapping
6 SepWhat's __init__.py?
29 AugPython's String Methods
19 AugHow not to use super
5 AugWhen should you call super?
28 JulTitle-case a String
12 JulUsing pip requirements files
7 JulUsing virtual environments
30 JunHow I made a dataclass remover
22 JunAppreciating Python's match-case by parsing Python code
9 JunPython's setattr function and __setattr__ method
8 JunWhen is equality the same as identity?
2 JunCatching all exceptions
25 MayCallables: Python's "functions" are sometimes classes
23 MaySeeking in files
16 MayReading binary files
10 MayFile modes
9 MayFlatten a list of lists
6 MayMaking hashable objects
2 MayUnicode character encodings
19 AprWhat is "hashable" in Python?
12 AprStatic methods
12 AprPython f-string tips & cheat sheets
4 AprClass methods
28 MarHow to make an iterator
21 MarHow to make an iterable
14 MarWhat is an iterator?
9 MarBuilt-in Functions
7 MarHow to create a generator function
28 FebWhat is a generator function?
28 FebVariables and objects
21 FebExiting a Python program
16 FebDunder variables
7 FebMaking the len function work on your Python objects
31 JanSupporting index and key lookups
25 JanHow to remove spaces
24 JanCatching multiple exception types
20 JanWhat can you do with exception objects?
17 JanHow to raise an exception
11 JanPython's try-except blocks
4 Jandataclasses
3 JanDeciphering Python's Traceback (most recent call last)

2021 75

27 DecRepresenting binary data with bytes
20 DecOverloading equality
20 DecConverting datetime to UTC
14 DecMaking a lazy attribute
7 DecLocally testing Python Morsels exercises
6 DecConvert a list to a string
29 NovPositional-only function arguments
23 NovUnpacking iterables into iterables
16 NovUnpacking iterables into function arguments
9 NovExtended iterable unpacking
2 NovImporting everything from a module
1 NovModules are cached
25 OctFile-like objects
19 OctPrinting to a file
18 OctWrite to a file
12 OctFiles are iterators
11 OctRead a file line-by-line
4 OctHow to read from a text file
27 SepDefining a main function
20 SepTuple unpacking isn't just for tuples
13 SepImporting a module runs code
7 SepDecorators aren't always functions
6 SepParsing command-line arguments
31 AugMaking a class decorator
30 AugAccessing command-line arguments
16 AugPython's walrus operator
12 AugRaw strings
8 AugCustomizing what happens when you assign an attribute
3 AugMaking a read-only attribute
26 JulPython's map and filter functions
26 JulWhat can you do with generator expressions?
20 JulGenerators are iterators
14 JulTurning a list comprehension into a generator expression
13 JulHow to write a generator expression
7 JulAugmented assignments mutate
28 JunMutable tuples
21 JunModule versus Script
21 JunMaking a decorator that accepts arguments
17 JunMaking a well-behaved decorator
14 JunHow to make a decorator
9 JunWhat is a decorator?
3 JunPassing functions as arguments to other functions
28 MayThe meaning of "callable"
27 MayMutating with an assignment statement
19 MayWhen should you not use a list comprehension?
18 MayTurning a for loop into a list comprehension
12 MayWhy use a list comprehension?
6 MayBreaking up long lines of code
4 MayWhere does Python look for methods?
30 AprSet and dictionary comprehensions
28 AprList comprehensions
21 Apr4 ways to import a module
20 AprMaking an auto-updating attribute
15 AprThe assignments hiding in your functions
13 AprDoes Python have constants?
7 AprHow attribute lookups and assignments work
1 AprTruthiness
30 MarDeep tuple unpacking
25 MarTuple unpacking
18 MarImporting a module
16 MarAssignment isn't just about the equals sign
4 MarInheriting one class from another
2 MarMethods are just functions attached to classes
25 FebEverything is an object
23 FebPass: Python's no-op
18 FebDocstrings
15 FebAttributes are everywhere
11 FebWhat is __init__ in Python?
9 FebEach module has its own global scope
4 FebScope is about assignment, not mutation
2 FebString concatenation vs string interpolation
28 JanAssigning to global variables
26 JanLocal and global variables
22 JanCustomizing the string representation of your objects
5 JanDunder methods

2020 20

30 DecPython's 2 different string representations
28 DecPython's self
22 DecClasses are everywhere
9 DecWhat is a class?
4 DecAccepting arbitrary keyword arguments
30 NovKeyword-only function arguments
23 NovSequences
18 NovAccepting any number of arguments to a function
16 NovHow to make a function
12 NovPositional vs keyword arguments
10 NovHow to call a function
5 NovPython doesn't have type coercion
13 OctPython's zip function
8 OctLooping with indexes
6 OctWhat is an iterable?
29 SepPython's "for" loop
18 JunString Representations for Classes
31 MayThe Iterator Protocol
31 MayDuck Typing
15 MayZipping an Iterator to Itself

2026 30

2025 44

2024 44

2023 41

2022 54

2021 75

2020 20

Undated 17