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  • python - How do I reverse a list or loop over it backwards? - Stack . . .
    Note: Dec, 2023 with Python 3 11 performance improvements I ran a quick comparison of Python 3 7 to 3 11 (on the same PC just now) with 1 million cycles to see what difference the the 3 11 performance improvements would make Python 3 11 was 26 5% faster on average, roughly the same for manual as for built in methods of reversing lists
  • python - Whats better the reverse method or the reversed built-in . . .
    This approach is good if you do NOT need to keep the original list and you have several passes operations to do on the elements of the reversed list and if you have to save the processed reversed list Last but not least, using slicing [::-1] creates a new object of the list a copy in reversed
  • python - Sort a list in reverse order - Stack Overflow
    reversed is needed, not sorted There is no sorting required Three months later you come along and provide an additional wrong answer to an already answered question of the simplest possible order Please delete this answer, for the sake of the poor noobs who read this answer and may actually try to understand what you've written –
  • Traverse a list in reverse order in Python - Stack Overflow
    How do I traverse a list in reverse order in Python? So I can start from collection[len(collection)-1] and end in collection[0] I also want to be able to access the loop index
  • How do I reverse a part (slice) of a list in Python?
    Nit: "Slicing Python lists always creates copies"—except when they are assigned to, as in a[2:4] = reversed(a[2:4]) in the OP's example People may be led to think that x = reversed(x) and x reverse() both modify x, but they are fundamentally different operations in Python, and their results differ when x is not a variable, as shown here –
  • python - Print a list in reverse order with range . . . - Stack Overflow
    Thing is that Python's reversed() operator doesn't work if the object is just an iterator The object must have one of below two for reversed() to work: Either support len() and integer indexes via [] Or have __reversed__() method implemented If you try to use reversed() on object that has none of above then you will get:
  • python - Reverse colormap in matplotlib - Stack Overflow
    As of Matplotlib 2 0, there is a reversed() method for ListedColormap and LinearSegmentedColorMap objects, so you can just do cmap_reversed = cmap reversed() Here is the documentation
  • loops - How to enumerate over a list in python backwards with index . . .
    You can call enumerate on the list, then convert the enumerate object to list, it will give list of tuples where each tuple will have index and value, finally iterate on reversed list





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