string reverse in python

1# in order to make a string reversed in python 
2# you have to use the slicing as following
3
4string = "racecar"
5print(string[::-1])
6

1'String'[::-1] #-> 'gnirtS'

1'hello world'[::-1]
2'dlrow olleh'

1str="Python" # initial string
2stringlength=len(str) # calculate length of the list
3slicedString=str[stringlength::-1] # slicing 
4print (slicedString) # print the reversed string

1#linear
2
3def reverse(s): 
4  str = "" 
5  for i in s: 
6    str = i + str
7  return str
8
9#splicing
10'hello world'[::-1]

1str1="Hello"
2#if u want to take length input from user then use the next line 
3#n=int(input("enter the no of elements: ")) #this one 
4
5#if u don't wanna ask user the length then directly use this next line
6n=len(str1)
7
8for i in range(-1,-(n+1),-1):
9        print(str1[i],end='')
10#prints olleh    
11