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 make a flat list out of a list of lists? - Stack Overflow If your list of lists comes from a nested list comprehension, the problem can be solved more simply directly by fixing the comprehension; please see How can I get a flat result from a list comprehension instead of a nested list? The most popular solutions here generally only flatten one "level" of the nested list See Flatten an irregular (arbitrarily nested) list of lists for solutions that
join list of lists in python - Stack Overflow Closed 9 years ago Is the a short syntax for joining a list of lists into a single list ( or iterator) in python? For example I have a list as follows and I want to iterate over a,b and c
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What is the difference between Pythons list methods append and extend? What is the difference between the list methods append and extend? append() adds its argument as a single element to the end of a list The length of the list itself will increase by one extend() iterates over its argument adding each element to the list, extending the list The length of the list will increase by however many elements were in the iterable argument append() The append