Q1. Which of the following statement will create list?
a. L1=list( )
b. L1=[1,2,3,4]
c. Both of the above
d. None of the above
Ans. c. Both of the above
Which of the following statement will reverse the list l1 MCQ
70+ List in Python MCQ Class 11-12
21. What will be the output of the following code segment?
list1 =[‘Red’, ‘Green’, ‘Blue’, ‘Cyan’, ‘Magenta’,
‘Yellow’, ‘Black’]
print(list1[-4:0:-1])
a) [‘Cyan’, ‘Blue’, ‘Green’, ‘Red’]
b) []
c) [‘Cyan’, ‘Blue’, ‘Green’]
d) [‘Cyan’, ‘Magenta’, ‘Yellow’, ‘Black’]
Show Answer
c) [‘Cyan’, ‘Blue’, ‘Green’]
22. Which of the following is a mutable sequence data type?
a) string
b) list
c) tuple
d) All of the mentioned
Show Answer
b) list
23. Which of the following is not an immutable data type:
a) string
b) complex
c) list
d) tuple
Show Answer
c) list
24. Which statement does not show any error after execution? Given L=[1,2,3,4] (U)
a) print(L+L)
b) print(L*L)
c) print(L-L)
d) All of the mentioned
Show Answer
a) print(L+L)
25. Which of the following command(s) will create a list?
a) list1 = list()
b) list1 = []
c) list1 = list([1, 2, 3])
d) all of these
Show Answer
d) all of these
26. Which command can we use to insert 5 to the third position in list1?
a) list1.insert(3, 5)
b) list1.insert(2, 5)
c) list1.add(3, 5)
d) list1.append(3, 5)
Show Answer
b) list1.insert(2, 5)
27. Which of the following commands will sort list1 in descending order?
a) list1.sort(reverse=0)
b) list1.sort()
c) list1.sort(reverse=‘True’)
d) list1.sort(reverse=1)
Show Answer
d) list1.sort(reverse=1)
28. Which command we use cane use To remove string “hello” from list1, Given, list1=[“hello”]
a) list1.remove(“hello”)
b) list1.pop(list1.index(‘hello’))
c) both a & b
d) none of these
Show Answer
c) both a & b
29. What will be the output of the following code segment?
list1 = [10,20,30,10,40,10]
print(list1.remove(10))
a) 10
b) [20,30,40]
c) None
d) []
Show Answer
c) None
30. What will be the output of the following code segment?
L=’good’
L=[1,2,3]
n=2
print(L*n)
a) goodgood
b) [1, 2, 3, 1, 2, 3]
c) error
d) none
Show Answer
b) [1, 2, 3, 1, 2, 3]
31. What will be the output of the following code segment?
l=[‘A’,’a’,’Aa’,’aA’]
print(max(l))
a) ‘aA’
b) ‘A’,
c) ‘a’
d) ‘Aa’
Show Answer
a) ‘aA’
32. pop() returns the element whose index is passed as argument to this function and also removes it from the list. If no argument is given,then it returns and removes the _____element ofthe list. Fill in the Blank Space.
a) None
b) first
c) last
d) all
Show Answer
c) last
33. What will be the output of the following code segment?
l=list(range(100,20,-20))
print(l)
a) [100 80 60 40]
b) [100, 80, 60, 40]
c) [100,20,-20]
d) error
Show Answer
b) [100, 80, 60, 40]
34. What will be the output of the following code segment?
myList = [1,2,3,4,5,6,7,8,9,10]
newList=[]
for i in range(0,len(myList)):
if i%2 == 0:
newList.append(myList[i])
print(newList)
a) [1,3,5,7,9]
b) [1,3,5,7]
c) []
d) [1,2,3,4,5,6,7,8,9,10]
Show Answer
a) [1,3,5,7,9]
35. Given list1 = [34,66,12,89,28,99]
Statement 1: list1.reverse()
Statement 2: list1[::-1]
Which statement modifies the contents of original list1.
a) Statement 1
b) Statement 2
c) Both Statement 1 and 2.
d) none of the mentioned
Show Answer
a) Statement 1
36. Given a string: s=”String”. Which statement converts string ‘s’ into List ‘L’.
a) L=s
b) L=list(s)
c) L=s[::]
d) all of the mentioned
Show Answer
b) L=list(s)
37. What will be the output of the following code segment?
list1 = [10,20,30,10,40,10]
print(list1.index(10))
a) [0]
b) [0,3,5]
c) 0
d) 1 3 5
Show Answer
c) 0
38. The record of a student (Name, Roll No, Marks in five subjects and percentage of marks) isstored in the following list:
stRecord = [‘Raman’,’A-36′,[56,98,99,72,69], 78.8]
Write Python statements to retrieve the following information from the list stRecord.
a) print(stRecord [2][4])
b) print(stRecord [2][-1])
c) print(stRecord [-2][-1])
d) all of the mentioned
Show Answer
d) all of the mentioned
39. S1: Operator + concatenates one list to the end of another list.
S2: Operator * is to multiply the elements inside the list.
Which option is correct?
a) S1 is correct, S2 is incorrect
b) S1 is incorrect, S2 is incorrect
c) S1 is incorrect, S2 is incorrect
d) S1 is incorrect, S2 is correct
Show Answer
a) S1 is correct, S2 is incorrect
40. Which type of copy is shown in the following python code?
1s1=[[10, 20], [30, 40], [50, 60]]
1s2=list(1s1)
a) Shallow copy
b) Deep copy
c) memberwise
d) All of the mentioned
Show Answer
a) Shallow copy
70+ List in Python MCQ Class 11-12
41. What is the data type of x after the following statement?
x = [7, 8, 9, 10]
a) List
b) Dictionary
c) Tuple
d) String
Show Answer
a) List
42. What is the data type of x after the following statement?
x = [‘Today’, ‘Tomorrow’, ‘Yesterday’]
a) List
b) Dictionary
c) Tuple
d) String
Show Answer
a) List
43. What will be the output after the following statements?
x = [‘Today’, ‘Tomorrow’, ‘Yesterday’]
y = x[1]
print(y)
a) x1
b) Today
c) Tomorrow
d) Yesterday
Show Answer
c) Tomorrow
44. What will be the output after the following statements?
x = [25, 35, 45]
y = x[0]
print(y)
a) x0
b) 25
c) 35
d) 45
Show Answer
b) 25
45. What will be the output after the following statements?
x = [10, 20, 30]
y = x[1] + x[2]
print(y)
a) 20
b) 30
c) 40
d) 50
Show Answer
d) 50
46. What will be the output after the following statements?
x = [‘Sunday’, ‘Monday’, ‘Tuesday’]
y = x[1] + x[2]
print(y)
a) MondayTuesday
b) SundayMonday
c) SunMonday
d) Monday Tuesday
Show Answer
a) MondayTuesday
47. What will be the output after the following statements?
x = [[0.0, 1.0, 2.0],[4.0, 5.0, 6.0]]
y = x[1][2]
print(y)
a) 0.0
b) 1.0
c) 5.0
d) 6.0
Show Answer
d) 6.0
48. What will be the output after the following statements?
x = [[0.0, 1.0, 2.0],[4.0, 5.0, 6.0]]
y = x[0][1] + x[1][0]
print(y)
a) 1.0
b) 4.0
c) 5.0
d) 6.0
Show Answer
c) 5.0
49. What will be the output after the following statements?
x = 3
y = 4
print(x*y)
a) 3
b) 4
c) 3 4
d) 12
Show Answer
d) 12
50. What will be the output after the following statements?
x = [15, 45, 85, 95]
print(x[3]-x[1])
a) 30
b) 40
c) 50
d) 10
Show Answer
c) 50
51. What will be the output after the following statements?
x = [5, 4, 3, 2]
print(x)
a) [5, 4, 3, 2]
b) 5, 4, 3, 2
c) 5432
d) (5, 4, 3, 2)
Show Answer
a) [5, 4, 3, 2]
52. What will be the output after the following statements?
x = [5, 4, 3, 2]
x.append(1)
print(x)
a) [5, 4, 3, 2]
b) 5, 4, 3, 2, 1
c) 5432
d) [5, 4, 3, 2, 1]
Show Answer
d) [5, 4, 3, 2, 1]
53. What will be the output after the following statements?
x = [5, 4, 3, 2]
x.insert(1, 0)
print(x)
a) [5, 1, 3, 2, 0]
b) [5, 0, 4, 3, 2]
c) [0, 5, 4, 3, 2]
d) [1, 5, 4, 3, 2]
Show Answer
b) [5, 0, 4, 3, 2]
54. What will be the output after the following statements?
x = [5, 4, 3, 2]
x.remove(2)
print(x)
a) [5, 3, 2]
b) [5, 4, 3]
c) [5, 4, 2]
d) [3, 2]
Show Answer
b) [5, 4, 3]
55. What will be the output after the following statements?
x = [5, 4, 3, 2, 1]
print(x.pop(3))
a) 4
b) 3
c) 2
d) 1
Show Answer
c) 2
56. What will be the output after the following statements?
x = [5, 4, 3, 2, 1]
print(x.index(1))
a) 4
b) 3
c) 2
d) 1
Show Answer
a) 4
57. What will be the output after the following statements?
x = [5, 4, 3, 2, 1]
x.extend(x)
print(x)
a) [5, 4, 3, 2, 1]
b) []
c) [1, 2, 3, 4, 5]
d) [5, 4, 3, 2, 1, 5, 4, 3, 2, 1]
Show Answer
d) [5, 4, 3, 2, 1, 5, 4, 3, 2, 1]
58. What will be the output after the following statements?
x = [5, 4, 3, 2, 1]
y = [0, 5, 10]
x.extend(y)
print(x)
a) [5, 4, 3, 2, 1, 0, 5, 10]
b) []
c) [5, 4, 3, 2, 1]
d) [0, 5, 10, 5, 4, 3, 2, 1]
Show Answer
a) [5, 4, 3, 2, 1, 0, 5, 10]
59. What will be the output after the following statements?
x = [5, 4, 3, 2, 1]
y = [10, 5, 0]
x.extend(y)
print(y)
a) [5, 4, 3, 2, 1, 10, 5, 0]
b) []
c) [10, 5, 0, 5, 4, 3, 2, 1]
d) [10, 5, 0]
Show Answer
d) [10, 5, 0]
60. What will be the output after the following statements?
x = [5, 4, 3, 2, 1]
y = [10, 5, 0]
y.extend(x)
print(y)
a) [5, 4, 3, 2, 1, 10, 5, 0]
b) [10, 5, 0, 5, 4, 3, 2, 1]
c) [5, 4, 3, 2, 1]
d) [10, 5, 0]
Show Answer
b) [10, 5, 0, 5, 4, 3, 2, 1]
Python List MCQs
This section focuses on the "list" in Python. These Multiple Choice Questions (mcq) should be practiced to improve the Python skills required for various interviews (campus interview, walk-in interview, company interview), placement, entrance exam and other competitive examinations.
1.Which of the following would give an error?
A. list1=[]
B. list1=[]*3
C. list1=[2,8,7]
D. None of the above
View Answer
Ans : D
Explanation: None of the above will result in error.
2.Which of the following is True regarding lists in Python?
A. Lists are immutable.
B. Size of the lists must be specified before its initialization
C. Elements of lists are stored in contagious memory location.
D. size(list1) command is used to find the size of lists.
View Answer
Ans : C
Explanation: Elements of lists are stored in contagious memory location is True regarding lists in Python.
3.What will be the output of below Python code?
print(list1[::-1])
A. [5,9,0,8]
B. [8,0,9]
C. [8,0,9,5]
D. [0,9,5]
View Answer
Ans : A
Explanation: [5,9,0,8] will be the output of below Python code.
4.Which of the following will give output as [23,2,9,75] ?
A. print(list1[1:7:2])
B. print(list1[0:7:2])
C. print(list1[1:8:2])
D. print(list1[0:8:2])
View Answer
Ans : C
Explanation: print(list1[1:8:2]) of the following will give output as [23,2,9,75].
5.The marks of a student on 6 subjects are stored in a list, list1=[80,66,94,87,99,95]. How can the student’s average mark be calculated?
A. print(avg(list1))
B. print(sum(list1)/len(list1))
C. print(sum(list1)/sizeof(list1))
D. print(total(list1)/len(list1))
View Answer
Ans : B
Explanation: the student’s average mark be calculated through print(sum(list1)/len(list1)).
6.What will be the output of following Python code?
print(min(list1))
A. c
B. C++
C. C
D. min function cannot be used on string elements
View Answer
Ans : C
Explanation: C will be the output of following Python code.
7.The elements of a list are arranged in descending order. Which of the following two will give same outputs?
i. print(list_name.sort())
ii. print(max(list_name))
iii. print(list_name.reverse())
iv. print(list_name[-1])
A. i, ii
B. i, iii
C. ii, iii
D. iii, iv
View Answer
Ans : B
Explanation: print(list_name.sort()) and print(list_name.reverse()) will give same outputs.
8. What will be the result after the execution of above Python code?
list1.pop(3)
print(list1)
A. [3,2,5,3,6]
B. [2,5,7,3,6]
C. [2,5,7,6]
D. [3,2,5,7,3,6]
View Answer
Ans : A
Explanation: [3,2,5,3,6] will be the result after the execution of above Python code.
9.What will be the output of below Python code?
list1.remove(2)
print(sum(list1))
A. 18
B. 19
C. 21
D. 22
View Answer
Ans : C
Explanation: 21 will be the result after the execution of above Python code.
10.What will be the output of below Python code?
list1.insert(5,8)
print(list1)
A. ["tom", "mary", "simon", 5]
B. ["tom", "mary", "simon", 8]
C. [8, "tom", "mary", "simon"]
D. Error
View Answer
Ans : B
Explanation: ["tom", "mary", "simon", 8] will be the result after the execution of above Python code.
Discussion
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vanur swamy
it is very easy to understand
Python MCQ (Multi Choice Questions)
1) What is the maximum possible length of an identifier?
- 16
- 32
- 64
- None of these above
Answer: (d) None of these above
Explanation: The maximum possible length of an identifier is not defined in the python language. It can be of any number.
2) Who developed the Python language?
- Zim Den
- Guido van Rossum
- Niene Stom
- Wick van Rossum
Answer: (b) Guido van Rossum
Explanation: Python language was developed by Guido van Rossum in the Netherlands.
3) In which year was the Python language developed?
- 1995
- 1972
- 1981
- 1989
Answer: (d) 1989
Explanation: Python language was developed by Guido van Rossum in 1989.
4) In which language is Python written?
- English
- PHP
- C
- All of the above
Answer: (b) C
Explanation: Python is written in C programming language, and it is also called CPython.
5) Which one of the following is the correct extension of the Python file?
- .py
- .python
- .p
- None of these
Answer: (a) .py
Explanation: ".py" is the correct extension of the Python file.
6) In which year was the Python 3.0 version developed?
- 2008
- 2000
- 2010
- 2005
Answer: (a) 2008
Explanation: Python 3.0 version was developed on December 3, 2008.
7) What do we use to define a block of code in Python language?
- Key
- Brackets
- Indentation
- None of these
Answer: (c) Indentation
Explanation: Python uses indentation to define blocks of code. Indentations are simply spaces or tabs used as an indicator that is part of the indent code child. As used in curly braces C, C++, and Java.
8) Which character is used in Python to make a single line comment?
- /
- //
- #
- !
Answer: (c) #
Explanation: "#" character is used in Python to make a single-line comment.
9) Which of the following statements is correct regarding the object-oriented programming concept in Python?
- Classes are real-world entities while objects are not real
- Objects are real-world entities while classes are not real
- Both objects and classes are real-world entities
- All of the above
Answer: (b) Objects are real-world entities while classes are not real
Explanation: None
10) Which of the following statements is correct in this python code?
- It will throw the error as multiple references to the same object is not possible
- id(name1) and id(name2) will have same value
- Both name1 and name2 will have reference to two different objects of class Name
- All of the above
Answer: (b) id(name1) and id(name2) will have same value
Explanation: "name1" and "name2" refer to the same object, so id(name1) and id(name2) will have the same value.
11) What is the method inside the class in python language?
- Object
- Function
- Attribute
- Argument
Answer: (b) Function
Explanation: Function is also known as the method.
12) Which of the following declarations is incorrect?
- _x = 2
- __x = 3
- __xyz__ = 5
- None of these
Answer: (d) None of these
Explanation: All declarations will execute successfully but at the expense of low readability.
13) Why does the name of local variables start with an underscore discouraged?
- To identify the variable
- It confuses the interpreter
- It indicates a private variable of a class
- None of these
Answer: (c) It indicates a private variable of a class
Explanation: Since there is no concept of private variables in Python language, the major underscore is used to denote variables that cannot be accessed from outside the class.
14) Which of the following is not a keyword in Python language?
- val
- raise
- try
- with
Answer: (a) val
Explanation: "val" is not a keyword in python language.
15) Which of the following statements is correct for variable names in Python language?
- All variable names must begin with an underscore.
- Unlimited length
- The variable name length is a maximum of 2.
- All of the above
Answer: (b) Unlimited length
Explanation: None
16) Which of the following declarations is incorrect in python language?
- xyzp = 5,000,000
- x y z p = 5000 6000 7000 8000
- x,y,z,p = 5000, 6000, 7000, 8000
- x_y_z_p = 5,000,000
Answer: (b) x y z p = 5000 6000 7000 8000
Explanation: Spaces are not allowed in variable names.
17) Which of the following words cannot be a variable in python language?
- _val
- val
- try
- _try_
Answer: (c) try
Explanation: "try" is a keyword.
18) Which of the following operators is the correct option for power(ab)?
- a ^ b
- a**b
- a ^ ^ b
- a ^ * b
Answer: (b) a**b
Explanation: The power operator in python is a**b, i.e., 2**3=8.
19) Which of the following precedence order is correct in Python?
- Parentheses, Exponential, Multiplication, Division, Addition, Subtraction
- Multiplication, Division, Addition, Subtraction, Parentheses, Exponential
- Division, Multiplication, Addition, Subtraction, Parentheses, Exponential
- Exponential, Parentheses, Multiplication, Division, Addition, Subtraction
Answer: (a) Parentheses, Exponential, Multiplication, Division, Addition, Subtraction
Explanation: PEMDAS (similar to BODMAS).
20) Which one of the following has the same precedence level?
- Division, Power, Multiplication, Addition and Subtraction
- Division and Multiplication
- Subtraction and Division
- Power and Division
Answer: (b) Division and Multiplication
Explanation: None
21) Which one of the following has the highest precedence in the expression?
- Division
- Subtraction
- Power
- Parentheses
Answer: (d) Parentheses
Explanation: PEMDAS (similar to BODMAS).
22) Which of the following functions is a built-in function in python language?
- val()
- print()
- print()
- None of these
Answer: (b) print()
Explanation: The print() function is a built-in function in python language that prints a value directly to the system.
23) Study the following function:
What will be the output of this function?
- 4
- 5
- 576
- 5
Answer: (d) 5
Explanation: The round function is a built-in function in the Python language that round-off the value (like 3.85 is 4), so the output of this function will be 5.
24) Which of the following is correctly evaluated for this function?
- (x**y) / z
- (x / y) * z
- (x**y) % z
- (x / y) / z
Answer: (c) (x**y) % z
Explanation: None
25) Study the following function:
What will be the output of this function?
- False
- True
- 0
- Invalid code
Answer: (a) False
Explanation: If any element is zero, it returns a false value, and if all elements are non-zero, it returns a true value. Hence, the output of this "all([2,4,0,6])" function will be false.
26) Study the following program:
What will be the output of this code?
- error
- 2 1
- 0 3 1
- None of these
Answer: (a) error
Explanation: Syntax error, there should not be a space between + and =.
27) Which one of the following syntaxes is the correct syntax to read from a simple text file stored in ''d:\java.txt''?
- Infile = open(''d:\\java.txt'', ''r'')
- Infile = open(file=''d:\\\java.txt'', ''r'')
- Infile = open(''d:\java.txt'',''r'')
- Infile = open.file(''d:\\java.txt'',''r'')
Answer: (a) Infile = open(''c:\\scores.txt'', ''r'')
Explanation: None
28) Study the following code:
What will be the output of this program?
- ['XX', 'YY']
- ['xx', 'yy']
- [XX, yy]
- None of these
Answer: (a) ['XX', 'YY']
Explanation: None
29) Study the following function:
What will be the output of this code?
- Error
- -6
- 6
- 6.0
Answer: (d) 6.0
Explanation: This function prints the square of the value.
30) Study the following function:
What will be the output of this code?
- False
- Ture
- Invalid code
- None of these
Answer: (b) True
Explanation: None
31) Study the following statement:
What will be the output of this statement?
- a+bc
- abc
- a bc
- a
Answer: (b) abc
Explanation: In Python, the "+" operator acts as a concatenation operator between two strings.
32) Study the following code:
What will be the output of this code?
- javatpoint
- java
- point
- None of these
Answer: (c) point
Explanation: Slice operation is performed on the string.
33) The output to execute string.ascii_letters can also be obtained from:?
- character
- ascii_lowercase_string.digits
- lowercase_string.upercase
- ascii_lowercase+string.ascii_upercase
Answer: (d) string.ascii_lowercase+string.ascii_upercase
Explanation: None
34) Study the following statements:
What will be the output of this statement?
- t
- j
- point
- java
Answer: (a) t
Explanation: The correct output of this program is "t" because -1 corresponds to the last index.
35) Study the following code:
What will be the output of this statement?
- java
point - java point
- \njavat\npoint
- Print the letter r and then javat and then point
Answer: (c) \njavat\npoint
Explanation: None
36) Study the following statements:
What will be the output of this statement?
- 33
- 63
- 0xA + 0xB + 0xC
- None of these
Answer: (a) 33
Explanation: A, B and C are hexadecimal integers with values 10, 11 and 12 respectively, so the sum of A, B and C is 33.
37) Study the following program:
Which of the following is the correct output of this program?
- 32
- 32 32
- 32 None
- Error is generated
Answer: (d) Error is generated
Explanation: Error is generated because self.o1 was never created.
38) Study the following program:
What will be the output of this statement?
- Ann Bob
- Ann Nick
- Wick Bob
- Wick Nick
Answer: (d) Wick Nick
Explanation: None
39) Study the following statements:
What will be the output of this statement?
- 18
- -18
- 17
- -17
Answer: (b) -18
Explanation: ASCII value of h is less than the z. Hence the output of this code is 104-122, which is equal to -18.
40) Study the following program:
Which of the following is correct output of this program?
- ['xy', 'yz']
- ['XY', 'YZ']
- [None, None]
- None of these
Answer: (a) ['xy', 'yz']
Explanation: None
41) Study the following program:
Which of the following is the correct output of this program?
- 1 2 3
- 3 2 1
- 1 2
- Invalid syntax
Answer: (d) Invalid syntax
Explanation: Invalid syntax, because this declaration (i = 1:) is wrong.
42) Study the following program:
Which of the following is correct output of this program?
- 1 2 3 4 5
- 1 2 3 4 5 6
- 1 2 3 4 5 6 7
- Invalid syntax
Answer: (b) 1 2 3 4 5 6
Explanation: None
43) Study the following program:
What will be the output of this statement?
- 1 2 3
- 0 1 2 3
- 0 1 2
- 3 2 1
Answer: (c) 0 1 2
Explanation: None
44) Study the following program:
What will be the output of this statement?
- 0 1
- 0 1 2
- 0 1 2 0
- 0 1 2 3
Answer: (c) 0 1 2 0
Explanation: None
45) Study the following program:
What will be the output of this statement?
- xyz
- No output
- x y z
- j j j j j j j..
Answer: (b) No output
Explanation: "j" is not in "xyz".
46) Study the following program:
Which of the following is the correct output of this program?
- PQRS
- pqrs
- qrs
- None of these
Answer: (b) pqrs
Explanation: None
47) Study the following program:
What will be the output of this statement?
- a b c
- 0 1 2
- 0 a 1 b 2 c
- None of these above
Answer: (b) 0 1 2
Explanation: None
48) Study the following program:
What will be the output of this statement?
- {0, 1, 2} {0, 1, 2} {0, 1, 2}
- 0 1 2
- Syntax_Error
- None of these above
Answer: (b) 0 1 2
Explanation: None
49) Which of the following option is not a core data type in the python language?
- Dictionary
- Lists
- Class
- All of the above
Answer: (c) Class
Explanation: Class is not a core data type because it is a user-defined data type.
50) What error will occur when you execute the following code?
- NameError
- SyntaxError
- TypeError
- ValueError
Answer: (a) NamaError
Explanation: Mango is not defined hence the name error.
51) Study the following program:
What will be the output of this statement?
- hello2hello2
- hello2
- Cannot perform mathematical operation on strings
- indentationError
Answer: (d) indentationError
Explanation: None
52) Which of the following data types is shown below?
What will be the output of this statement?
- Dictionary
- Tuple
- List
- Stack
Answer: (c) List
Explanation: Any value can be stored in the list data type.
53) What happens when '2' == 2 is executed?
- False
- Ture
- ValueError occurs
- TypeError occurs
Answer: (a) False
Explanation: It only evaluates to false.
54) Study the following program:
What will be the output of this statement?
- invalid code
- JavaTpoint has not exist
- JavaTpoint has exist
- none of these above
Answer: (a) invalid code
Explanation: A new exception class must inherit from a BaseException, and there is no such inheritance here.
55) Study the following statement
Which of the following is the correct statement?
- x dictionary z is created
- x and y are the keys of dictionary z
- 0 and 1 are the values of dictionary z
- All of the above
Answer: (d) All of the above
Explanation: All of the above statements is correct regarding Python code.
Next TopicPython MCQ Part 2
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Reversing a List in Python
Python provides us with various ways of reversing a list. We will go through few of the many techniques on how a list in python can be reversed.
Examples:
Python List reverse()
Python List reverse() is an inbuilt method in the Python programming language that reverses objects of the List in place.
Syntax:
list_name.reverse()
Parameters:
There are no parameters.
Returns:
The reverse() method does not return any value but reverses the given object from the list.
Error:
When anything other than list is used in place of list, then it returns an AttributeError
Example 1: Reverse a List
Python3
|
# Python3 program to demonstrate the
# use of reverse method
# a list of numbers
list1 = [1, 2, 3, 4, 1, 2, 6]
list1.reverse()
print(list1)
# a list of characters
list2 = ['a', 'b', 'c', 'd', 'a', 'a']
list2.reverse()
print(list2)
|
Output:
[6, 2, 1, 4, 3, 2, 1] ['a', 'a', 'd', 'c', 'b', 'a']Example 2: Demonstrate the Error in reverse() Method
Python3
|
# Python3 program to demonstrate the
# error in reverse() method
# error when string is used in place of list
string = "abgedge"
string.reverse()
print(string)
|
Output:
Traceback (most recent call last): File "/home/b3cf360e62d8812babb5549c3a4d3d30.py", line 5, in string.reverse() AttributeError: 'str' object has no attribute 'reverse'Example 3: Practical Application
Given a list of numbers, check if the list is a palindrome.
Note: Palindrome-sequence that reads the same backward as forwards.
Python3
|
# Python3 program for the
# practical application of reverse()
list1 = [1, 2, 3, 2, 1]
# store a copy of list
list2 = list1.copy()
# reverse the list
list2.reverse()
# compare reversed and original list
if list1 == list2:
print("Palindrome")
else:
print("Not Palindrome")
|
Output:
Palindrome
Article Tags :
Python
python-list
python-list-functions
Reverse
Practice Tags :
python-list
Reverse
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