
python - What are iterator, iterable, and iteration? - Stack Overflow
So an iterable is an object that you can get an iterator from. An iterator is an object with a next (Python 2) or __next__ (Python 3) method. Whenever you use a for loop, or map, or a list comprehension, …
Python: how to determine if an object is iterable?
Checking isinstance(obj, Iterable) detects classes that are registered as Iterable or that have an __iter__() method, but it does not detect classes that iterate with the __getitem__() method. The only …
What exactly does "iterable" mean in Python? Why isn't my object …
This is how the term "iterable" is defined in Python's doc: iterable An object capable of returning its members one at a time. Examples of iterables include all sequence types (such as list, str, and tuple) …
What does the "yield" keyword do in Python? - Stack Overflow
Oct 24, 2008 · The truth is Python performs the above two steps anytime it wants to loop over the contents of an object - so it could be a for loop, but it could also be code like otherlist.extend(mylist) …
TypeError: 'NoneType' object is not iterable - Stack Overflow
Nov 12, 2023 · What does TypeError: 'NoneType' object is not iterable mean? Example: for row in data: # Gives TypeError! print(row)
How does a Python for loop with iterable work? - Stack Overflow
Sep 5, 2019 · 3 Formally a for statement in Python always operates on an iterable -- an object which can provide an iterator over its items. The for statement successively fetches the next element from the …
Get the first item from an iterable that matches a condition
With "comprehension" style: next(i for i in range(100000000) if i == 1000) WARNING: The expression works also with Python 2, but in the example is used range that returns an iterable object in Python 3 …
How to check if an object is iterable in Python? - Stack Overflow
How does one check if a Python object supports iteration, a.k.a an iterable object (see definition Ideally I would like function similar to isiterable(p_object) returning True or False (modelled a...
ImportError: cannot import name 'Iterable' from 'collections' in Python
Apr 27, 2022 · As said in other answers, the issue is the deprecation of some aliases from collections.abc into collections from python 3.10. If you can't modify the importations in your scripts …
python - How to build a basic iterator? - Stack Overflow
3 This is an iterable function without yield. It make use of the iter function and a closure which keeps it's state in a mutable (list) in the enclosing scope for python 2.