COP4521 Homework 2

Name:                         FSU login:


1) (10 points). Let variable rate = 0.122. Write a print statement that prints
the rate in both the raw value and the (round down) integer
percentage format as the following using f-string:

rate = 0.122 (12%)







2) (10 points). What is the output of the following code segment:

a = [i * 2 for i in range(10)]
print(a[:-2:3])






3) (10 points). Write a function that takes two arguments, a dictionary
dict and a keyword key, and returns True if key is in dict
and False otherwise.






4) (20 points). Write a lambda function that has the same functionality as
the following function.

import math
def isPowerOfTwo(x):
    if 2**math.log2(x) == x:
        return True
    else :
        return False









5) (20 points). Complete the body of the function to count the number
of power of 2 numbers in a list using functional programming tools.
The body should only contain one return statement.

def countPowerOfTwo(lst):







6) (20 points). Write a class foo with three instance variables var1, var2,
and var3. var1 should be initialized to 10 and var2 to 20 when an object
of the class is created. var3 is initialized when method aaa in the
class is invoked. 






7) (10 points). Write a class boo that is a derived class of foo in problem 6)
with an additional instance variable var that should be initialized to 100
when an object of class boo is created.