Python 3 Write a function that reverses a string the header

Python 3

Write a function that reverses a string. the header of the function is def reverse(s):

Write a test program that prompts the user to enter a string,invokes the reverse function and displays the reversed string

Use a loop, (use a loop, don\'t use [::-1])

Solution

reversestr.py----

str=input(\'enter a string : \')   
print \'reverse : \',reverse(str)
def reverse(s):
return s[::-1]

--------explanation------

In the reverse function we used to slice to reverse the string by going backward using -1 (double colon implies to implement reverse slice on the complete string)