Python Taskbook Level 2.6
Given a string of letters and numbers, get a list of positions of all the numbers in that string.
Given a string:
'AbCdE'
Change the case of the letters in this line to the opposite. In our case, it should look like this:
'aBcDe'
Given a list of numbers, for example, like this:
[1, 2, 3, 4, 5, 6]
Merge pairs of elements together:
[12, 34, 56]
There is a certain line with the words:
'aaa bbb ccc eee fff'
Capitalize the first character of every other word in that line. In our case, it should look like this:
'aaa Bbb ccc Eee fff'
