Question

1. what is the output for y?

y = 0
for i in range(0, 8, 2):
y += i
print(y)
20
7
12
8
this program computes the sum of the even numbers from 0 to 7 and then prints out the sum at the end. in this case, the program computes 0+2+4+6 which equals 12. this sum does not include 8 because the range function stops at the last valid integer less than the given stop argument.

1. suppose d = {\peter\:33, \john\:36}, to obtain the number of entries in dictionary, use

d.size()
size(d)
len(d)
d.len()

1. nested loops are loops inside of other loops.

true
false

Explanation:

10.

Step1: Analyze range function

The range(0, 8, 2) generates a sequence of numbers starting from 0, incrementing by 2, and stopping before 8. So the sequence is 0, 2, 4, 6.

Step2: Calculate sum

We start with y = 0 and then add each number from the sequence to y. So $y=0 + 0+2+4+6=12$.

In Python, to get the number of key - value pairs (entries) in a dictionary, we use the built - in len() function. We pass the dictionary as an argument to it. For a dictionary d, we write len(d). There is no size() method for dictionaries in Python, and d.len() is not a valid syntax.

By definition, nested loops are loops where one loop is placed inside another loop. For example, a for loop inside another for loop or a while loop inside a for loop etc.

Answer:

12

11.