Q6 rgeeeeeeeeeeeeeeeeeeeeeeeeeeeunlasfeuykanfyhawughnejnqwekluriryjqwkdjeydkqwreyfqwetguifyitfgquioygwetfgwe weqgbjdnkegyrjhmgykktw 3e444ee2jtyrbsvefsmse

 

  P.I.P:- 9.1

 

Q1. Suppose that D is the dictionary {"what" : 22, "are" : 11, "you" : 14, "doing" : 5, "next" : 9, "Saturday?" : 4}. Write down what the value of D is after each of the following Python statements. Evaluate each statement starting with the same value of the dictionary D, mentioned above and write what will be the change dictionary D?

 

(a) D ["what"] = D ["are"]

(b) D.update ({"Sunday":25, "what":5})

(c) del D["you"]

(d) D ["which"] = 19

(e) D.clear ()

 

Answer =

 

(a)

>>> D = {"what" : 22, "are" : 11, "you" : 14, "doing" : 5, "next" : 9, "Saturday?" : 4}

>>> D ["what"] = D ["are"]

>>> D

{'what': 11, 'are': 11, 'you': 14, 'doing': 5, 'next': 9, 'Saturday?': 4}

>>> 

 

(b)

>>> D = {"what" : 22, "are" : 11, "you" : 14, "doing" : 5, "next" : 9, "Saturday?" : 4}

>>> D.update ({"Sunday":25, "what":5})

>>> D

{'what': 5, 'are': 11, 'you': 14, 'doing': 5, 'next': 9, 'Saturday?': 4, 'Sunday': 25}

>>> 

 

(c)

>>> D = {"what" : 22, "are" : 11, "you" : 14, "doing" : 5, "next" : 9, "Saturday?" : 4}

>>> del D["you"]

>>> D

{'what': 22, 'are': 11, 'doing': 5, 'next': 9, 'Saturday?': 4}

>>> 

 

(d)

>>> D = {"what" : 22, "are" : 11, "you" : 14, "doing" : 5, "next" : 9, "Saturday?" : 4}

>>> D ["which"] = 19

>>> D

{'what': 22, 'are': 11, 'you': 14, 'doing': 5, 'next': 9, 'Saturday?': 4, 'which': 19}

>>> 

 

(e)

>>> D = {"what" : 22, "are" : 11, "you" : 14, "doing" : 5, "next" : 9, "Saturday?" : 4}

>>> D.clear ()

>>> D

{}

>>> 

 

 

 

 

 

Q4. Predict the output of the following code:

 

birthday = {

    'Newton' : 1642,

    'Darwin' : 1809,

    'Turing' : 1912

}

 

print ('keys :', birthday.keys())

print ('values :', birthday.values())

print ('items:', birthday.items())

print ('get:', birthday.get('Curie', 1867))

 

temp = {

    'Curie' : 1867,

    'Hopper' : 1906,

    'Franklin' : 1920

}

 

birthday.update(temp)

print ('after update:', birthday)

 

birthday.clear()

print ('after clear:', birthday)

 

Answer =

 

Output:-

 

keys : dict_keys(['Newton', 'Darwin', 'Turing'])

values : dict_values([1642, 1809, 1912])

items: dict_items([('Newton', 1642), ('Darwin', 1809), ('Turing', 1912)])

get: 1867

after update: {'Newton': 1642, 'Darwin': 1809, 'Turing': 1912, 'Curie': 1867, 'Hopper': 1906, 'Franklin': 1920}

after clear: {}

>>> 

 

 

 

 

 

 

 

Q5. Write a program that uses a dictionary that contains ten usernames and passwords. The program should ask the user to enter their usernames and passwords. If the username is not in the dictionary, the program should indicate that the person is not a valid user of the system. If the username is in the dictionary, but the user does not enter the right password, the program should say that the password is invalid. If the password is correct, then the program should tell the user that they are now logged into the system.

 

Answer =

 

dic = {'Path' : "2003",

       'wala' : "1809",

       'Portal' : "1912",

       'Express' : "2003",

       'Computer' : "9834",

       'Python' : "1990",

       'Mysql' : "2001",

       'c++' : "1996",

       'java' : "1998",

       'html' : "1999" }

 

username = input("Enter username :- ")

 

if username in dic :

    password = input("Enter password :- ")

    if dic[username] == password :

        print ("You are now logged into the system.")

    else :

        print ("Invalid password.")

else :

    print ("You are not valid user.")

Comments

Post a Comment

Popular posts from this blog

Q 7 jrgeshestm teejthjkljklh srthklkltjsjkghsegbn tjhrhrthgkjerjklhbgebgjasb nerjks

P.I.P: - 7.1     Q1. Consider the following code: what is the value of ‘a’ at the end?   a = [1, 2, 3] a [2] = 0 a [a [ 2 ] ] = 5 a [1:2] = []   Answer =   Value of ‘a’ at the end is: [5, 0]               Q2. You have a list a = [1, 2, [3, 4], 5]. Now answer the following. Verify your answers in Python Shell.   (a) What is the length of a? 4 (b) How many elements does it contain? What are their types? It contain 4 element. 3 integer type & 1 list. (c) How many integers? 3 integer (d) What does len(a[2]) return? 2 (e) What does a[len(a)] evaluate to? It give error. (f) What does a [-1 * len(a)] evaluate to? Output:- 1               Q4. Giv...
Read more

Q4

  P.I.P: - 3.2     Q8. Predict the output of following code:   num = 20.5 z = 3 result = 2 + z * z ** 3 + num // z print (result)   (a) Firstly, determine the answer without running the code and write. (b) Now type the above code in script mode and test-run the program. Write below the result given by Python.   Answer =   (i) It is based on your thinking that how you execute the above program in your mind. So do you self.   (ii) Output:-   89.0 >>>              Q9. Write a program to read a floating point number n. Print n, n 2 , n 3 , n 4 and n 5 .   Answer =   num = float (input ("Enter the number :- ")) print ("Answer is :- ", num, ', ', num **2, ', ', num ** 3, ', ', num ** 4, ' &', num ** 5)             Q10. Write a program that calculates the volume and surface area ...
Read more

q5 kjhgtishtglrhtvthghdghnnvcmnzbsd,nbdn neffjkghklen h

    P.I.P: - 1.1     Q2. Display and print the given values:   (i) 33 + 23 (ii) S = 24 + 9 (first assign 24 + 9 to S and then print (display S)) (iii) a = 3, b = 17, c = b - 10 (first assign these values to a, b and c in three separate statements and then print/display them.)   Answer =   (i) >>> 33 + 23 56 >>>    (ii) >>> S = 24 + 9 >>> print (S) 33 >>>    (iii) >>> a = 3 >>> b = 17 >>> c = b - 10 >>> print (a , b , c) 3 17 7 >>> 
Read more