Python Taskbook Level 5.6

Задание 1

Ask the user to enter their email. Check if they entered the correct value.

Задание 2

Ask the user to enter a date in the format year-month-day. Determine if the date was already in the current year.

Задание 3

There is a certain list given, for example, this one:

python[123, 456, 789]

Merge all the elements of this list into one list, breaking them down character by character:

python[1, 2, 3, 4, 5, 6, 7, 8, 9]