This function reverse the order of letters in each word of a sentence.

def reverse(sentence):  
  words = sentence.split()  
  reversesentence = ' '.join(word[::-1] for word in words)  
  return reversesentence  

input = "Jim wants to get a job in data science"  
print("The output of " + input + " is: " + reverse(input))  

It gives an output like this:

The output of Jim wants to get a job in data science is: miJ stnaw ot teg a boj ni atad ecneics