QUESTIONS

Q$1.$Create a Python function that removes all punctuation characters from a given string. The function should prompt the user to enter a string, remove all punctuation characters $($such as $\text{'}.\text{'},\text{'},\text{'},\text{'}!\text{'},$ etc.$),$ and return the cleaned string.

Q$2.$Develop a Python function that checks if a given string is a palindrome. The function should prompt the user to input a string, determine whether it is a palindrome $($reads the same forwards and backwards$),$ and return True or False accordingly.

Q$3.$Write a Python function that calculates the length of each word in a given string entered by the user and returns these lengths as a list. The function should prompt the user to enter a string, calculate the lengths of the words, and return them as a list.

Q$4.$ Write a Python function that converts uppercase letters to lowercase and lowercase letters to uppercase in a given string. The function should prompt the user to enter a string, convert uppercase letters to lowercase, and lowercase letters to uppercase.