I am trying to call a function that will empty two lists that i send as arguments. How do i go about emptying the lists within the function and making sure they are empty once the code comes to …

Feb 5, 2015 · It means it will return None. You could remove the return and it would still return None because all functions that don't specify a return value in python will by default return …

This is the first google hit for "python test empty array" and similar queries, and other people are generalizing the question beyond just lists, so here's a caveat for a different type of sequence …

Jul 18, 2010 · In Python, the built-in functions all and any return True and False respectively for empty iterables. I realise that if it were the other way around, this question could still be asked. …

Jan 16, 2015 · After more thought, I think returning an empty dict might be more Pythonic. A good rule of thumb might be to always return an empty container if you write a function/method …

There is no such thing as "returning nothing" in Python. Every function returns some value (unless it raises an exception). If no explicit return statement is used, Python treats it as returning …

Mar 11, 2022 · I'm calling a bunch of methods that return a list. The list may be empty. If the list is non-empty, I want to return the first item; otherwise, I want to return None. This code works: …

Jul 30, 2019 · I'm trying to write a function that returns all the strings within in a list. Uing the isinstance () method and a for loop, I append the strings to a new list and then return the list. …

This question asks specifically about an empty generator function. For that reason, I take it to be a question about the internal consistency of Python's syntax, rather than a question about the …

Sep 11, 2016 · Use Python's truthiness, where [] tests as false, and non-empty lists test as true. No need to get fancy because the whole point of this truthiness approach is to be able to use …