- Python: list of lists - Stack Overflow
The first, [:], is creating a slice (normally often used for getting just part of a list), which happens to contain the entire list, and thus is effectively a copy of the list The second, list(), is using the actual list type constructor to create a new list which has contents equal to the first list
- What is the difference between list and list [:] in python?
When reading, list is a reference to the original list, and list[:] shallow-copies the list When assigning, list (re)binds the name and list[:] slice-assigns, replacing what was previously in the list Also, don't use list as a name since it shadows the built-in
- Meaning of list[-1] in Python - Stack Overflow
I have a piece of code here that is supposed to return the least common element in a list of elements, ordered by commonality: def getSingle(arr): from collections import Counter c = Counte
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- python - Removing duplicates in lists - Stack Overflow
How can I check if a list has any duplicates and return a new list without duplicates?
- slice - How slicing in Python works - Stack Overflow
The first way works for a list or a string; the second way only works for a list, because slice assignment isn't allowed for strings Other than that I think the only difference is speed: it looks like it's a little faster the first way Try it yourself with timeit timeit () or preferably timeit repeat ()
- How do I list all files of a directory? - Stack Overflow
How can I list all files of a directory in Python and add them to a list?
- How do I get a list of locally installed Python modules?
Using Pip List Well !pip list will run inside your jupyter notebook if working there, simplifying the 'quick check' Combine with other utilities like grep (if you have installed) pip list | grep pandas will get you your current pandas version for example edited May 11, 2021 at 12:57 answered Apr 3, 2020 at 15:37 asliceoftom
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