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- Meaning of list[-1] in Python - Stack Overflow
All your return c most_common()[-1] statement does is call c most_common and return the last value in the resulting list, which would give you the least common item in that list Essentially, this line is equivalent to:
- What is the difference between List. of and Arrays. asList?
Let summarize the differences between List of and Arrays asList List of can be best used when data set is less and unchanged, while Arrays asList can be used best in case of large and dynamic data set
- List of zeros in python - Stack Overflow
See why [] is faster than list() There is a gotcha though, both itertools repeat and [0] * n will create lists whose elements refer to same id This is not a problem with immutable objects like integers or strings but if you try to create list of mutable objects like a list of lists ([[]] * n) then all the elements will refer to the same object
- Command to list all files in a folder as well as sub-folders in windows
To print specific file present in the folders sub-folders for eg : If you want to list just the csv files then : dir b s A-D o:gn * csv >list txt If you want to also include xlsx files then the code is : dir b s A-D o:gn * csv * xlsx >list txt You can mention more file types in the same way P S Got to know this one from chatgpt :P
- 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 subtract one list from another? - Stack Overflow
However, this still has a problem from quantumSoup's version: It requires your elements to be hashable That's pretty much built into the nature of sets ** If you're trying to, e g , subtract a list of dicts from another list of dicts, but the list to subtract is large, what do you do?
- What is the syntax to insert one list into another list in python?
List slicing is quite flexible as it allows to replace a range of entries in a list with a range of
- How do I concatenate two lists in Python? - Stack Overflow
joined_list = [item for list_ in [list_one, list_two] for item in list_] It has all the advantages of the newest approach of using Additional Unpacking Generalizations - i e you can concatenate an arbitrary number of different iterables (for example, lists, tuples, ranges, and generators) that way - and it's not limited to Python 3 5 or later
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