Play with loops inside loops

As previously mentioned, it is important that you read in your mind what you’re typing. Let’s read together the following example of a loop inside another loop (nested).

What are the initials of our project?

#First iteration of loop 1

• Line 1: We declare our variable project with a list containing 4 strings.
• Line 2: “For each word inside the list called project”. Now word = “Code”.

#First iteration of loop 2

• Line 3: and “for each letter in “Code”[0]. This means this second loop won’t iterate through the other letters “ode”, as I specified to focus only on the first element [0] of “Code”.  Now letter = “C”. It goes to line 4.
• Line 4: print “C”. It goes to line 2. 

#Second iteration of loop 1

• Line 2: Now word = “For”.

#Second iteration of loop 2

• Line3: for each letter in “For”[0]. Now letter = “F”.
• print “F”.

and so on.

What would happen if instead of printing initials, we want to print the first two letters?

Play with other examples by adding a second loop as you like. We recommend you to read it out loud, or even drawing in a paper: