9/ Static types aren't checked at runtime but they ARE stored in a function's `annotations` attribute, and in fact you can put anything you want as an annotation:
```
>>> def g(x: 3) -> itertools:
... ...
...
>>> g.__annotations__
{'x': 3, 'return': <module 'itertools' (built-in)>}
```
```
>>> def g(x: 3) -> itertools:
... ...
...
>>> g.__annotations__
{'x': 3, 'return': <module 'itertools' (built-in)>}
```
April 2, 2025 at 8:08 PM
9/ Static types aren't checked at runtime but they ARE stored in a function's `annotations` attribute, and in fact you can put anything you want as an annotation:
```
>>> def g(x: 3) -> itertools:
... ...
...
>>> g.__annotations__
{'x': 3, 'return': <module 'itertools' (built-in)>}
```
```
>>> def g(x: 3) -> itertools:
... ...
...
>>> g.__annotations__
{'x': 3, 'return': <module 'itertools' (built-in)>}
```
holding my nose and adding itertools to this project for one function
how is there noting in rust stdlib to do permutations for an iter ???
May 4, 2026 at 12:29 AM
holding my nose and adding itertools to this project for one function
wdym? itertools is part of the standard library, and I'm just using it to chain iterators, not "recursion"
October 31, 2024 at 3:17 PM
wdym? itertools is part of the standard library, and I'm just using it to chain iterators, not "recursion"
OMG, Itertools::chunk_by is *so* convenient. docs.rs/itertools/la...
Itertools in itertools - Rust
An `Iterator` blanket implementation that provides extra adaptors and methods.
docs.rs
February 13, 2025 at 9:29 PM
OMG, Itertools::chunk_by is *so* convenient. docs.rs/itertools/la...
Lição 15 de Python: Itertools em Python
#Python #bolhatech #py #programadores #fundamentos #itertools
#linguagemPython
#Python #bolhatech #py #programadores #fundamentos #itertools
#linguagemPython
September 15, 2024 at 2:56 AM
Lição 15 de Python: Itertools em Python
#Python #bolhatech #py #programadores #fundamentos #itertools
#linguagemPython
#Python #bolhatech #py #programadores #fundamentos #itertools
#linguagemPython
Increasingly convinced that `at_most_one` and `exactly_one` are the best thing in itertools
September 9, 2026 at 8:18 PM
Increasingly convinced that `at_most_one` and `exactly_one` are the best thing in itertools
I'm on my phone and didn't realize I linked to the "wrong" project. Use this instead:
docs.rs/itertools/la... Itertools in itertools - Rust
docs.rs/itertools/la... Itertools in itertools - Rust
Itertools in itertools - Rust
An `Iterator` blanket implementation that provides extra adaptors and methods.
docs.rs
June 10, 2025 at 6:21 PM
I'm on my phone and didn't realize I linked to the "wrong" project. Use this instead:
docs.rs/itertools/la... Itertools in itertools - Rust
docs.rs/itertools/la... Itertools in itertools - Rust
I could imagine that the system
I’m describing replaces blanket impls with newtypes in a way that effectively corresponds to ML modules for things that would be blanket impls in Rust (eg to use itertools need to call some transformer to make your iterator a type that implements Itertools)
I’m describing replaces blanket impls with newtypes in a way that effectively corresponds to ML modules for things that would be blanket impls in Rust (eg to use itertools need to call some transformer to make your iterator a type that implements Itertools)
December 22, 2024 at 2:01 PM
I could imagine that the system
I’m describing replaces blanket impls with newtypes in a way that effectively corresponds to ML modules for things that would be blanket impls in Rust (eg to use itertools need to call some transformer to make your iterator a type that implements Itertools)
I’m describing replaces blanket impls with newtypes in a way that effectively corresponds to ML modules for things that would be blanket impls in Rust (eg to use itertools need to call some transformer to make your iterator a type that implements Itertools)
I want to thank @mathspp.com for coming on the show this week! It was an interesting dive into teaching, the itertools modules, and comparing vocabulary to idioms in programming.
realpython.com/podcasts/rpp...
realpython.com/podcasts/rpp...
Episode #252: Rodrigo Girão Serrão: Python Training, itertools, and Idioms – The Real Python Podcast
Once you've learned the vocabulary and syntax of the Python language, how do you progress into learning the right combinations to put into your code? How can Python's built-in itertools library enhanc...
realpython.com
June 6, 2025 at 4:35 PM
I want to thank @mathspp.com for coming on the show this week! It was an interesting dive into teaching, the itertools modules, and comparing vocabulary to idioms in programming.
realpython.com/podcasts/rpp...
realpython.com/podcasts/rpp...
Even if you’re not into Python, you may still enjoy this article…
But you’ll enjoy it more if you’re interested in Python.
Especially if you don’t often use the itertools module
www.thepythoncodingstack.com/p/itertools-...
But you’ll enjoy it more if you’re interested in Python.
Especially if you don’t often use the itertools module
www.thepythoncodingstack.com/p/itertools-...
Loss of Words • A Nested Journey (# 1 in The `itertools` Series • `product()`)
Follow Yteria on her troubled journey, explore her unusual world in this first article in The `itertools` Series. Discover `itertools.product()` and `itertools.starmap()`
www.thepythoncodingstack.com
March 14, 2025 at 11:44 PM
Even if you’re not into Python, you may still enjoy this article…
But you’ll enjoy it more if you’re interested in Python.
Especially if you don’t often use the itertools module
www.thepythoncodingstack.com/p/itertools-...
But you’ll enjoy it more if you’re interested in Python.
Especially if you don’t often use the itertools module
www.thepythoncodingstack.com/p/itertools-...
itertools fixes this in rust
November 5, 2025 at 12:49 PM
itertools fixes this in rust
`exactly_one` and `at_least_one` are low-key becoming my favorite methods in `itertools`
September 7, 2025 at 7:16 PM
`exactly_one` and `at_least_one` are low-key becoming my favorite methods in `itertools`
You’re a Python programmer.
How often do you use `itertools`?
If the answer is “never” or “rarely”, you probably ought to spend a bit more time getting acquainted with it
—
I’m on two articles so far in The `itertools` Series. More to come…
www.thepythoncodingstack.com/p/the-iterto...
How often do you use `itertools`?
If the answer is “never” or “rarely”, you probably ought to spend a bit more time getting acquainted with it
—
I’m on two articles so far in The `itertools` Series. More to come…
www.thepythoncodingstack.com/p/the-iterto...
The `itertools` Series
In this series, you’ll follow Yteria and her particular challenges when coding in Python.
www.thepythoncodingstack.com
April 8, 2025 at 11:00 AM
You’re a Python programmer.
How often do you use `itertools`?
If the answer is “never” or “rarely”, you probably ought to spend a bit more time getting acquainted with it
—
I’m on two articles so far in The `itertools` Series. More to come…
www.thepythoncodingstack.com/p/the-iterto...
How often do you use `itertools`?
If the answer is “never” or “rarely”, you probably ought to spend a bit more time getting acquainted with it
—
I’m on two articles so far in The `itertools` Series. More to come…
www.thepythoncodingstack.com/p/the-iterto...
![Screenshot of python code -
import itertools as it
Outputs: None
list(range(12))
Outputs: [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11]
list(it.batched(list(range(12)), 3))
Outputs: [(0, 1, 2), (3, 4, 5), (6, 7, 8), (9, 10, 11)]](https://cdn.bsky.app/img/feed_thumbnail/plain/did:plc:ygdeyuxj3bfk42zacptp3sw7/bafkreig6zvmo25se5ocm5des5s3hef2kjmctqmi3rze6ay27dhtvq4pyam)
groupby() is a powerful function from itertools that groups consecutive identical values in an iterable.
It's perfect for data processing, counting runs, and simplifying repetitive sequences.
Python Functions in Depth — Writing Clean, Reusable, and Powerful Code pythonclcoding.gumroad.com/l/kuvib
It's perfect for data processing, counting runs, and simplifying repetitive sequences.
Python Functions in Depth — Writing Clean, Reusable, and Powerful Code pythonclcoding.gumroad.com/l/kuvib
August 2, 2026 at 4:45 AM
groupby() is a powerful function from itertools that groups consecutive identical values in an iterable.
It's perfect for data processing, counting runs, and simplifying repetitive sequences.
Python Functions in Depth — Writing Clean, Reusable, and Powerful Code pythonclcoding.gumroad.com/l/kuvib
It's perfect for data processing, counting runs, and simplifying repetitive sequences.
Python Functions in Depth — Writing Clean, Reusable, and Powerful Code pythonclcoding.gumroad.com/l/kuvib
The takewhile function returns an iterator (a lazy iterable), just as most looping helpers in itertools do.
Read more ‘‰ https://trey.io/xtql6h
#Python
trey.io
April 28, 2026 at 12:12 AM
The takewhile function returns an iterator (a lazy iterable), just as most looping helpers in itertools do.
Read more ‘‰ https://trey.io/xtql6h
#Python
fun fact: when I posted this on twitter or mastodon (can't remember which tbh), someone complained that the itertools approach is gatekeeping
June 25, 2023 at 12:52 AM
fun fact: when I posted this on twitter or mastodon (can't remember which tbh), someone complained that the itertools approach is gatekeeping
ultimately i think the question boils down to "there's several ways to interpret this, why would we pick one arbitrarily, use an iterator api like zip, chain, or itertools::product that says what you mean"
February 15, 2025 at 2:18 PM
ultimately i think the question boils down to "there's several ways to interpret this, why would we pick one arbitrarily, use an iterator api like zip, chain, or itertools::product that says what you mean"
#rustlang Crate Highlight
✨itertools ✨
If you need advanced iterator ops like intersections, sorting, interleaving, merging, grouping, this crate is for you. I wonder if these will eventually be part of rust std but for now this crate rocks!
📦 Crates:
✨itertools ✨
If you need advanced iterator ops like intersections, sorting, interleaving, merging, grouping, this crate is for you. I wonder if these will eventually be part of rust std but for now this crate rocks!
📦 Crates:
crates.io
March 24, 2025 at 8:19 AM
#rustlang Crate Highlight
✨itertools ✨
If you need advanced iterator ops like intersections, sorting, interleaving, merging, grouping, this crate is for you. I wonder if these will eventually be part of rust std but for now this crate rocks!
📦 Crates:
✨itertools ✨
If you need advanced iterator ops like intersections, sorting, interleaving, merging, grouping, this crate is for you. I wonder if these will eventually be part of rust std but for now this crate rocks!
📦 Crates:
🐍🎧 Rodrigo Girão Serrão: Python Training, itertools, and Idioms
How can Python's built-in itertools library enhance your skills? This week on the show, we speak with @mathspp.com about teaching Python through his blog and his passion for the itertools library.
buff.ly/dEVrE9L
How can Python's built-in itertools library enhance your skills? This week on the show, we speak with @mathspp.com about teaching Python through his blog and his passion for the itertools library.
buff.ly/dEVrE9L
June 7, 2025 at 9:21 PM
🐍🎧 Rodrigo Girão Serrão: Python Training, itertools, and Idioms
How can Python's built-in itertools library enhance your skills? This week on the show, we speak with @mathspp.com about teaching Python through his blog and his passion for the itertools library.
buff.ly/dEVrE9L
How can Python's built-in itertools library enhance your skills? This week on the show, we speak with @mathspp.com about teaching Python through his blog and his passion for the itertools library.
buff.ly/dEVrE9L
📰🐍 Get the best Python links of the week: PyCoder’s Weekly Issue #722: Itertools, Circular Imports, Mock, and More (Feb. 17, 2026) pycoders.com/issues/722
PyCoder’s Weekly | Issue #722
Itertools, Circular Imports, Mock, and More
pycoders.com
February 17, 2026 at 7:46 PM
📰🐍 Get the best Python links of the week: PyCoder’s Weekly Issue #722: Itertools, Circular Imports, Mock, and More (Feb. 17, 2026) pycoders.com/issues/722
Nested `for` loops?
Nah!
Let's use `itertools.product()` instead
www.thepythoncodingstack.com/p/itertools-...
Nah!
Let's use `itertools.product()` instead
www.thepythoncodingstack.com/p/itertools-...
Loss of Words • A Nested Journey (# 1 in The `itertools` Series • `product()`)
Follow Yteria on her troubled journey, explore her unusual world in this first article in The `itertools` Series. Discover `itertools.product()` and `itertools.starmap()`
www.thepythoncodingstack.com
March 15, 2025 at 10:31 PM
Nested `for` loops?
Nah!
Let's use `itertools.product()` instead
www.thepythoncodingstack.com/p/itertools-...
Nah!
Let's use `itertools.product()` instead
www.thepythoncodingstack.com/p/itertools-...
itertools is for intersperse
June 7, 2026 at 9:39 PM
itertools is for intersperse
Join Rodrigo Girão Serrão (@mathspp.com) at EuroPython for "A tour of the module `itertools`" session: ep2026.europython.eu/PRGGNW
June 24, 2026 at 10:01 AM
Join Rodrigo Girão Serrão (@mathspp.com) at EuroPython for "A tour of the module `itertools`" session: ep2026.europython.eu/PRGGNW