This task involves creating a text cleaning pipeline to remove punctuation and convert text to lowercase. **Example:** The input 'This is a test sentence!' should return 'this is a test sentence'. **Constraints:** The input will be a string, and the output should be a string.
Test Cases
Test Case 1
Input:
'This is a test sentence!'Expected:
'this is a test sentence'Test Case 2
Input:
'Hello, world!'Expected:
'hello world'+ 3 hidden test cases