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'] for index, item in reverse_enum(L): print index, item #3 L = ['foo', 'bar', 'bas'] for index in...
Basically, thereversed()function is good when you want to iterate over a list in reverse order without creating a copy. You can also convert the iterator into a list if you need a reversed version of the list itself. numbers=[1,2,3,4,5]#Convert the iterator to a listreversed_numbers...
If you need to destructively iterate through a dictionary in Python, then .popitem() can do the trick for you: Python >>> likes = {"color": "blue", "fruit": "apple", "pet": "dog"} >>> while True: ... try: ... print(f"Dictionary length: {len(likes)}") ... item ...
The simplest way to reverse a list is to iterate through the list in reverse order. While iterating, we can add each traversed element to a new list which will create a reversed list. For this, first we will calculate the length of the list and then we will iterate through the list i...
You can also reverse a string in Python by using a for loop to iterate over the characters in the string and append them to a new string in reverse order. Here’s an example: # Using a for loop to reverse a string my_string = 'Hello, World!' reversed_string = '' for char in...
Just like before, you can use sorted() to iterate through each element of the iterable you pass in. In a string, each element means each character, including spaces. Note: Python sorts strings lexicographically by comparing Unicode code points of the individual characters from left to right. ...
In this script, the enqueue() function adds an element to the queue by appending it to the end of the queue list. The dequeue() function removes the first element from the queue using the pop(0) method. The display_queue() function iterates through the elements in the queue list and ...
Using the same examplenumbersabove, reverse the list using this function. Don’t forget to wrap the function withlist()to actually store the return value ofreversed()into a list. newList=list(reversed(numbers))print(newList) Alternatively, you can also use aforloop to iterate over the rever...
Run the code to get the5X5table like the image shown below values with step size 2. Read More:Loop through a Range for Each Cell with Excel VBA Example 7 – Use a Backwards For Next Loop to Iterate Over a Dataset in Reverse Order ...
Reverse Dictionary Lookup by Brute ForcePerhaps a straightforward way of solving this problem is to iterate over the dictionary until we find the value we’re looking for:my_dict = {"color": "red", "width": 17, "height": 19} value_to_find = "red" for key, value in my_dict.items...