Bite 128. Work with datetime's strptime and strftime

In this Bite you get some more practice with datetime's useful strptime and stftime.

Complete the two functions: years_ago and convert_eu_to_us_date following the instructions in their docstrings.

This is the definition and difference between the two:

• strptime: parse (convert) string to datetime object.
• strftime: create formatted string for given time/date/datetime object according to specified format.

Reference: 8.1.8. strftime() and strptime() Behavior. Good luck and keep calm and code in Python!