Problem
1. Write a Python program that modifies the following set so that it only includes valid types of animals. Provide the code and the output of the program running as text.
animals = {"cat", "degree", "dog"}
2. Assuming that you could not see the contents of the variable 'animals' from the previous question, how would you know that there are not two items with the same value?
3. Describe two challenges you may face when web scraping a dynamic webpage versus a static webpage.
4. Web scraping is a contentious topic in data science. Describe two ethical issues associated with web scraping. Provide two examples of how such ethical issues have the potential to cause harm.
5. Write a Python program to check that a password has a capital letter, a special character (: ; !) and a number.
6. Describe two advantages and two disadvantage of utilising test-driven development processes for data processing tasks.
7. Provide an example of where you have found test-driven development useful in your own work.
8. Provide an example of where you have found test-driven development challenging in your own work.