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Bookmark or Share- Python type hint for Iterable[str] that isn't str - Stack OverflowA str is valid as an Iterable[str] type, but that may not be the correct input for a function. For example, in this trivial example that is intended to operate on sequences of filenames: from typing import Iterable def operate_on_files(file_paths: Iterable[str]) -> None: for path in file_paths: ...
- TypeError: 'NoneType' object is not iterable - Stack OverflowFor 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 returned from some API call, make sure to check that the request returned an iterable object.
- Checking whether something is iterable - Stack OverflowKeep in mind that the word iterable specifically refers to the iterable protocol, though there exist different ways to loop over objects. The following list is not exhaustive: arr.forEach(func) runs a function on each non-empty slot in an array (see sparse arrays here).
- java - What is the difference between iterator and iterable and how to ...On the flip side, Iterable is another interface, which, if implemented by a class forces the class to be Iterable and is a target for For-Each construct. It has only one method named iterator() which comes from Iterator interface itself. When a collection is iterable, then it can be iterated using an iterator. For understanding visit these:
- What are iterator, iterable, and iteration? - Stack OverflowAn iterable is an object that has an iter() method which returns an iterator. It is something that can be looped over. Example : A list is iterable because we can loop over a list BUT is not an iterator; An iterator is an object that you can get an iterator from. It is an object with a state so that it remember where it is during iteration
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