Python Taskbook Level 2.1
Given a list of strings, leave in this list only those strings that start with http://.
Given a string, find the position of the first zero in the string.
Given a list, remove elements with a given value from it.
Print to the console all numbers in the range from 10 to 1000, the sum of the first and second digits of which is equal to five.
Given a string:
'abcdeabc'
Clear it from duplicate characters:
'abcde'
