Revision of basics of Python (2 Marks Questions)

1. Find and write the output of the following Python code:

   STR = ["90","10","30","40"]
   COUNT = 3
   SUM = 0
   for I in [1,2,5,4]:
       S = STR[COUNT]
       SUM = float (S)+I
       print (SUM)
       COUNT-=1
   

   Solution
2. What is the possible outcome(s) executed from the following code? Also, specify the maximum and minimum values that can be assigned to variable NUM.

   import random
   NAV = ["LEFT","FRONT","RIGHT","BACK"]
   NUM = random.randint(1,3)
   NAVG = ""
   for I in range(NUM,1,-1):
       NAVG = NAVG+NAV[I]
   print (NAVG)
   (i) BACKRIGHT   (ii) BACKRIGHTFRONT
   (iii) BACK      (iv) LEFTFRONTRIGHT

   Solution
3. Choose the possible output(s) of the following code and write the MAX and MIN values of N and M respectively.

   import random
   N=random.randint(0,2)
   M=random.randint(0,3)
   DOCK = [[1,2,3],[2,3,4],[3,4,5]]
   for R in range(N):
       for C in range(M):
           print(DOCK[R][C],end=" ")
       print()
   
   i.  1 2 3  ii.   1 2 3  iii.  1 2   iv.  1 2
       2 3 4        2 3 4        2 3        2 3
       3 4 5                                3 4
   

   Solution
4. Which of the following can be used as a valid variable identifier(s) in Python write the reason for each and every option: 
• total
• 7Salute
• Que$tion
• global
Solution

5. Rewrite the following code in python after removing all syntax error(s). Underline each correction done in the code:

   TEXT=""GREAT
   DAY""
   for T in range[0,7]:
       print (TEXT(T))
   print (T+TEXT)

Solution

6. Rewrite the following code in Python after removing all syntax error(s). Underline each correction done in the code.

   Val = int(rawinput("Value:"))
   Adder = 0
   for C in range(1,Val,3)
    Adder+=C
    if C%2=0:
     Print (C*10)
    Else:
     print (C*)
   print (Adder)
   

   Solution
   
7. Out of the following, find those identifiers, which cannot be used for naming Variable or Functions in a Python program:

   Price*Qty class
   For  do
   4thCol  totally
   Row3  _Amount
   

   Solution
8. Rewrite the following code in python after removing all syntax error(s). Underline each correction done in the code.

   for Name in [Amar,Shveta,Parag]
    IF Name[0]='S':
     print(Name)
   

   Solution
9. Find and write the output of the following python code :

   Numbers = [9,18,27,36]
   for Num in Numbers:
    for N in range(1, Num%8):
     print(N,"#",end="")
   print()
   

   Solution
10. Find and write the output of the following python code :

    Msg1="WeLcOME"
    Msg2="GUeSTs"
    Msg3=""
    for I in range(0,len(Msg2)+1):
        if Msg1[I]>="A" and Msg1[I]<="M":
            Msg3=Msg3+Msg1[I]
        elif Msg1[I]>="N" and Msg1[I]<="Z":
            Msg3=Msg3+Msg2[I]
        else:
            Msg3=Msg3+"*"
    print (Msg3)
    

    Solution


11. What will be the output of the following code:

    dc1 = {}
    dc1[1] = 1
    dc1['1'] = 2
    dc1[1.0] = 4
    sum = 0
    for k in dc1:
     sum += dc1[k]
    print(sum)
    

Solution

12. What possible output(s) are expected to be displayed on the screen at the time of execution of the program from the following code? Also, specify the minimum values that can be assigned to each of the variables BEGIN and LAST.

    import random
    VALUES=[10,20,30,40,50,60,70,80]
    BEGIN=random.randint(1,3)
    LAST=random.randint(BEGIN,4)
    
    for I in range(BEGIN,LAST+1):
     print (VALUES[I],"-",)
    
    i)   30 - 40 - 50 - 
    ii)  10 - 20 - 30 - 40 -  
    iii) 30 - 40 - 50 - 60 -  
    iv)  30 - 40 - 50 - 60 - 70 -
    

Solution

13. Write a python program using a random module to generate random numbers between 15 and 35.

Solution
14. Rewrite the following code in python after removing all syntax error(s). Underline each correction done in the code.
    

    250 = Number 
    WHILE Number<=1000:     
    	if Number=>750:           
    		print (Number)
    		Number=Number+100     
    	else           
    	print (Number*2)
    	Number=Number+50
    
    


Solution
15. Predict the output of the following code snippet :

    1 2 3

    x="hello world" print(x[:2],x[:-2],x[-2:]) print(x[2:-3],x[-4:-2])

Solution
16. Find the output of the following :

    1 2 3 4

    word="green vegetables" print(word.find('g',2)) print(word.find('veg',2)) print(word.find('tab',4,15))

Solution
17. What will be the output of the following code snippet? Also, justify your answer.

    1 2 3 4 5 6

    rec={'Name':'Python', 'Age':20, 'Addr':'SK01', 'Country':'India'} id1=id(rec) del rec rec={'Name':'C++', 'Age':40, 'Addr':'SK02', 'Country':'USA'} id2=id(rec) print(id1==id2)

Solution