02. How to use Vim to insert, open and join lines o, O, J

Let's say you want to append some code beneath a line. To do this, we had to go to our line, then press "A" and ENTER. Remember that even two key strokes is sometimes too much in Vim. Thankfully, Vim makes this process much easier with the "o" key. Think of "o" as in open. To add a line, use: o - open a line below O - open a line above Let's add some comments to this python function: def sumAndSquare(a, b): #comment here sum = a+b # another comment here return sum ** 2 We can also join lines together. J - join current line with the one below Turn this block of text back into one line! Review Questions: 1) Insert a period at the end of this line 2) Insert a "please" in front of the following sentences: give me a cookie. don't text and drive. Solutions: 1) A. 2) on each line, type "IPlease"

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