Answer for problem in python programming

https://365datascience.com/dwqa-answer/answer-for-problem-in-python-programming/ -

Hi Prafful

thanks for reaching out!

This particular example is used to reverse a string using a slicer. The -1 is the step, so at each iteration we’re going back one element at a time. Here we haven’t specified the length of the interval to be reversed, so Python reverses the whole string. 

Here is a link with more on the topic of slicing:
https://www.educative.io/edpresso/how-do-you-reverse-a-string-in-python

 

Best, 

Eli

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