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, …

First I want to clarify, I'm NOT asking what is "iterator". This is how the term "iterable" is defined in Python's doc: iterable An object capable of returning its members one at a time.

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 …

Jul 28, 2011 · An Iterable is a simple representation of a series of elements that can be iterated over. It does not have any iteration state such as a "current element". Instead, it has one method that …

If you want to be able to iterate ctr more than once, it needs to be a non-iterator iterable, where it returns a brand new iterator each time __iter__ is invoked. Trying to mix and match (an iterator that is …

Mar 29, 2022 · In Python, is there a way to distinguish between strings and other iterables of strings? A str is valid as an Iterable[str] type, but that may not be the correct input for a function. For example, in

I would like to get the first item from a list matching a condition. It's important that the resulting method not process the entire list, which could be quite large. For example, the following fun...

Nov 12, 2023 · For example if data is a value returned from a function, then make sure that function returns an iterable object (such as list, numpy ndarray, pandas DataFrame etc.). If data is the value …

I notice that the implementation of Iterable, now in _collections_abc.py, has changed so it also checks that the required __iter__ method isn't just None. And am I right in thinking this is equivalent to using …

Sep 5, 2019 · The for statement just defines how iterable and iterator are used. If you are mostly familiar with external iteration, it helps looking at iterable and iterator as well.