how to reverse certain section of string in python code example

Example 1: how to reverse a string in python

# in order to make a string reversed in python 
# you have to use the slicing as following

string = "racecar"
print(string[::-1])

Example 2: python reverse a string

#linear

def reverse(s): 
  str = "" 
  for i in s: 
    str = i + str
  return str

#splicing
'hello world'[::-1]