Jun 18, 2016 · in Python 2, tuple() is the only genuine empty tuple, but (), and ((),) create a tuple of length 1 that contains a tuple of length 0 - but not a tuple of length zero itself.

Mar 5, 2022 · The Python documentation knows that this is counter-intuitive, so it quotes: A special problem is the construction of tuples containing 0 or 1 items: the syntax has some extra quirks to …

Jul 1, 2015 · Checking these tuples, every tuple except t1, should return True, meaning there is so called empty value. P.S. there is this question: Test if tuple contains only None values with Python, …

May 23, 2015 · In Python, constructors like list (), set (), tuple () etc. take an iterable as input. Hence they iterate through the iterable and somthing like list (tuple ()) does not return a list with an empty tuple.

May 15, 2012 · 8 You might want to store the arguments to a function as a tuple, without knowing the structure of the function in advance. If it happens that the function you need to store the parameters …

4 Your test is failing because letter_found is actually a tuple containing one element, so it's not empty. numpy.where returns a tuple of index values, one for each dimension in the array that you're testing. …

Python: Adding elements of a tuple to an empty tuple Asked 9 years, 11 months ago Modified 9 years, 11 months ago Viewed 18k times

Aug 20, 2019 · 22 I have a variable path, which should be a tuple of strings. I want to start with it set to an empty tuple, but mypy complains.

Apr 30, 2012 · Do note that [[]] * count does not create a list of empty lists. It creates a list of references to the same one empty list. Adding an entry to one of those lists, adds them to all of the lists.

Aug 11, 2023 · This isn't supported by Python's typing system as of today, so depending on how you interface with this empty list, there might be another solution. The most obvious that comes to mind: …