Question 7:
Define two variables first and second so that first = “Jimmy” and second = “Johny”. Write a short python code segment that swaps the values assigned to these two variables and prints the results.

Answer:

first = "Jimmy"
second = "Johny"
temp = first
first = second
second = temp
print("first =", first)
print("second =", second)

Output:

first = Johny
second = Jimmy

Question 8:

Write a python program that creates a tuple storing first 9 terms of Fibonacci series.

Answer:

lst = [0,1]
a = 0
b = 1
c = 0

for i in range(7):
    c = a + b
    a = b
    b = c
    lst.append(c)

tup = tuple(lst)

print("9 terms of Fibonacci series are:", tup)

Output:

9 terms of Fibonacci series are:  (0, 1, 1, 2, 3, 5, 8, 13, 21)

Question 9:

Create a dictionary whose keys are month names and whose values are the number of days in the corresponding months.

(a) Ask the user to enter a month name and use the dictionary to tell them how many days are in the month.
(b) Print out all of the keys in alphabetical order.
(c) Print out all of the months with 31 days.
(d) Print out the (key-value) pairs sorted by the number of days in each month.

Answer:

days_in_months = {
    "january":31,
    "february":28,
    "march":31,
    "april":30,
    "may":31,
    "june":30,
    "july":31,
    "august":31,
    "september":30,
    "october":31,
    "november":30,
    "december":31
}

m = input("Enter name of month: ")

if m not in days_in_months:
    print("Please enter the correct month")
else:
    print("There are", days_in_months[m], "days in", m)

print("Months in alphabetical order are:", sorted(days_in_months))

print("Months with 31 days:", end=" ")
for i in days_in_months:
    if days_in_months[i] == 31:
        print(i, end=" ")

day_month_lst = []
for i in days_in_months:
    day_month_lst.append([days_in_months[i], i])
day_month_lst.sort()

month_day_lst =[]
for i in day_month_lst:
    month_day_lst.append([i[1], i[0]])

sorted_days_in_months = dict(month_day_lst)
print()
print("Months sorted by days:", sorted_days_in_months)

Output:

Enter name of month: may
There are 31 days in may
Months in alphabetical order are: ['april', 'august', 'december', 'february', 'january', 'july', 'june', 'march', 'may', 'november', 'october', 'september']
Months with 31 days: january march may july august october december
Months sorted by days: {'february': 28, 'april': 30, 'june': 30, 'november': 30, 'september': 30, 'august': 31, 'december': 31, 'january': 31, 'july': 31, 'march': 31, 'may': 31, 'october': 31}

Question 10:

Write a function called addDict(dict1, dict2) which computes the union of two dictionaries. It should return a new dictionary, with all the items in both its arguments (assumed to be dictionaries). If the same key appears in both arguments, feel free to pick a value from either.

Answer:

def addDict(dict1, dict2):
    union_dict = {}
    for key, value in dict1.items():
        union_dict[key] = value
    for key, value in dict2.items():
        union_dict[key] = value
    return union_dict

dict1 = {'a': 1, 'b': 2}
dict2 = {'b': 3, 'c': 4}
result = addDict(dict1, dict2)
print("Union of dict1 and dict2:", result)

Output:

Union of dict1 and dict2: {'a': 1, 'b': 3, 'c': 4}

Question 11:

Write a program to sort a dictionary’s keys using Bubble sort and produce the sorted keys as a list.

Answer:

my_dict = eval(input("Enter the dictionary: "))
keys = list(my_dict.keys())
l = len(keys)
for i in range(l):
    for j in range(0, l - i - 1):
        if keys[j] > keys[j + 1]:
            keys[j], keys[j + 1] = keys[j + 1], keys[j]
print("Sorted keys:",keys)

Output:

Enter the dictionary: {'c':10, 'f':87, 'r':23, 'a':5}
Sorted keys: ['a', 'c', 'f', 'r']

Question 12:
Write a program to sort a dictionary’s values using Bubble sort and produce the sorted values as a list.

Answer:

my_dict = eval(input("Enter the dictionary: "))
values = list(my_dict.values())
l = len(values)
for i in range(l):
    for j in range(0, l - i - 1):
        if values[j] > values[j + 1]:
            # Swap values
            values[j], values[j + 1] = values[j + 1], values[j]
print("Sorted values:", values)

Output:

Enter the dictionary: {'w':34, 'a':5, 'g':45, 't':21}
Sorted values: [5, 21, 34, 45]