Instructions

Annotate every line of code.

You may want to google line $7$ which is a common convention in Python code but sort of odd.

Make it so that average $($values$)$ only averages the non$-$negative values. For example, average $([-2,9,7,-2,8,0,-7])$ should

return $6.$ Hint: If you feel stuck, look at the "Conditionals" information near the bottom of this week's "Repetition" Notebook.

def average$($values$)$:

sum $=0$;

for $i$ in range$($len$($values$))$:

sum $=$ sum $+$ values $i$

return sum$/$len$($values$)$

if $==""$: # I recommend researching online what this line of code is doing $\_$ it has a unique purpose

but is commonly used.

values $=[-2,9,7,-2,8,0,-7]$

# values $=[1,2,3,4,5,6,7,8,-9,-10]$

# values $=[1,1,1,2,2,2,3,3,4,4,32]$

# values $=[30,32,21,11,12,92,46,54,7,-250]$

# values $=[5,5,5,5,5,-6,-6,-6,-6,-6]$

print$("$The average is $",$ average$($values$))$

# Annotate code.

# Make it so that average$($values$)$ only averages the non$-$negative values

# average $([-2,9,7,-2,8,0,-7])$ should return $6$