#Place a comment before a line of code that previously worked, and record what happens when you rerun the program.
#Copied form Example1

var1 = "All "
var2 = "work "
var3 = "and "
var4 = "no "
#var5 = "play "
var6 = "makes "
var7 = "Jack "
var8 = "a "
var9 = "dull"
var10 = "boy."

print(var1+var2+var3+var4+var5+var6+var7+var8+var9+var10)
#now we get an error that var5 is not defined.