>>> num_list = [1, 2, 3, 4, 5]>>>num_list.reverse()>>>num_list [5, 4, 3, 2, 1] If you want to loop over the reversed list, use the in built reversed() function, which returns an iterator (without creating a new list) num_list = [1, 2, 3, 4, 5]fornuminreversed...
Learn how to reverse a String in Python.There is no built-in function to reverse a String in Python.The fastest (and easiest?) way is to use a slice that steps backwards, -1.ExampleGet your own Python Server Reverse the string "Hello World": txt = "Hello World"[::-1]print(txt) ...
The redirect variable is the variable here that will have the reversed value. We assign the reversed URL value here. The backend allocates the URL value for the specified name in redirect_url_name and associates it with the redirect variable. We then use the actual reverse function to perform...
You can display a function to the console with print(), include it as an element in a composite data object like a list, or even use it as a dictionary key:Python >>> def func(): ... print("I am function func()!") ... >>> print("cat", func, 42) cat <function func ...
Let’s understand the code part. the functionreverse_list(input_list)is defined which accepts the list that needs to be reversed. Then, a starting index is created and initialized with the value 0 using thestart_index = 0. Then, the length of the given list is taken using theend_index ...
The easiest and fastest way to reverse a string in Python is to use the slice operator [start:stop:step]. When you pass a step of -1 and omit the start and end values, the slice operator reverses the string. A more verbose, but readable (and slower) version of the string reversal ...
Python: How to iterate list in reverse order #1 for index, val in enumerate(reversed(list)): print len(list) - index - 1, val #2 def reverse_enum(L): for index in reversed(xrange(len(L))): yield index, L[index] L = ['foo', 'bar', 'bas']...
Python >>> # Python 3 >>> help(sorted) Help on built-in function sorted in module builtins: sorted(iterable, /, *, key=None, reverse=False) Return a new list containing all items from the iterable in ascending order. A custom key function can be supplied to customize the sort ...
defreverse_string(s):returns[::-1] Later, we'd use this function instead of the plain slicing operator to reverse desired string, and the resulting string will be the same as before -"!dlroW olleH": reversed_str = reverse_string(example_str) ...
To use np.argsort in descending order in Python, first apply np.argsort to our array, and then either invert the result using array slicing ([::-1]) or negate the array before sorting. For inverting, sort the array using np.argsort and then reverse the resulting indices. For negating, ...