Review questions, analyze choices, and reveal correct answers at your own pace.
1. What will be the output of the following Python code?
elements = [0, 1, 2]
def incr(x):
return x+1
print(list(map(elements, incr)))
A. [1, 2, 3]
B. [0, 1, 2]
C. error
D. none of the mentioned
Correct Option: error
2. What will be the output of the following Python code?
elements = [0, 1, 2]
def incr(x):
return x+1
print(list(map(incr, elements)))
A. [1, 2, 3]
B. [0, 1, 2]
C. error
D. none of the mentioned
Correct Option: [1, 2, 3]
3. What will be the output of the following Python code?
x = ['ab', 'cd']
print(list(map(upper, x)))
A. [‘AB’, ‘CD’]
B. [‘ab’, ‘cd’]
C. error
D. none of the mentioned
Correct Option: error
4. What will be the output of the following Python code?
def to_upper(k):
return k.upper()
x = ['ab', 'cd']
print(list(map(upper, x)))
A. [‘AB’, ‘CD’]
B. [‘ab’, ‘cd’]
C. none of the mentioned
D. error
Correct Option: error
5. What will be the output of the following Python code?
def to_upper(k):
return k.upper()
x = ['ab', 'cd']
print(list(map(to_upper, x)))
A. [‘AB’, ‘CD’]
B. [‘ab’, ‘cd’]
C. none of the mentioned
D. error
Correct Option: [‘AB’, ‘CD’]
6. What will be the output of the following Python code?
def to_upper(k):
k.upper()
x = ['ab', 'cd']
print(list(map(to_upper, x)))
A. [‘AB’, ‘CD’]
B. [‘ab’, ‘cd’]
C. none of the mentioned
D. error
Correct Option: none of the mentioned
7. What will be the output of the following Python code?
x = ['ab', 'cd']
print(map(len, x))
A. [‘ab’, ‘cd’]
B. [2, 2]
C. [‘2’, ‘2’]
D. None of the mentioned
Correct Option: None of the mentioned
8. What will be the output of the following Python code?
x = ['ab', 'cd']
print(list(map(len, x)))
A. [‘ab’, ‘cd’]
B. [2, 2]
C. [‘2’, ‘2’]
D. None of the mentioned
Correct Option: [2, 2]
9. What will be the output of the following Python code?
x = ['ab', 'cd']
print(len(map(list, x)))
A. [2, 2]
B. 2
C. 4
D. none of the mentioned
Correct Option: none of the mentioned
10. What will be the output of the following Python code?
x = ['ab', 'cd']
print(len(list(map(list, x))))
A. 2
B. 4
C. error
D. none of the mentioned
Correct Option: 2
11. What will be the output of the following Python code?
x = ['ab', 'cd']
print(len(list(map(list, x))))))
A. 2
B. 4
C. error
D. none of the mentioned
Correct Option: error
12. What will be the output of the following Python code?
x = ['ab', 'cd']
print(list(map(list, x)))
26. What will be the output of the following Python code?
x = abcd
print(list(map(list, x)))
A. [‘a’, ‘b’, ‘c’, ‘d’]
B. [‘abcd’]
C. [[‘a’], [‘b’], [‘c’], [‘d’]]
D. none of the mentioned
Correct Option: none of the mentioned
27. What will be the output of the following Python code?
x = 1234
print(list(map(list, x)))
A. [1, 2, 3, 4]
B. [1234]
C. [[1], [2], [3], [4]]
D. none of the mentioned
Correct Option: none of the mentioned
28. What will be the output of the following Python code?
x = 1234
print(list(map(list, [x])))
A. [1, 2, 3, 4]
B. [1234]
C. [[1], [2], [3], [4]]
D. none of the mentioned
Correct Option: none of the mentioned
29. What will be the output of the following Python code?
x = 'abcd'
print(list(map([], x)))
A. [‘a’, ‘b’, ‘c’, ‘d’]
B. [‘abcd’]
C. [[‘a’], [‘b’], [‘c’], [‘d’]]
D. none of the mentioned
Correct Option: none of the mentioned
30. which of these is false about a package?
A. A package can have subfolders and modules
B. Each import package need not introduce a namespace
C. import folder.subfolder.mod1 imports packages
D. from folder.subfolder.mod1 import objects imports packages
Correct Option: Each import package need not introduce a namespace
31. Which of these definitions correctly describes a module?
A. Denoted by triple quotes for providing the specification of certain program elements
B. Design and implementation of specific functionality to be incorporated into a program
C. Defines the specification of how it is to be used
D. Any program that reuses code
Correct Option: Design and implementation of specific functionality to be incorporated into a program
32. Which of the following is not an advantage of using modules?
A. Provides a means of reuse of program code
B. Provides a means of dividing up tasks
C. Provides a means of reducing the size of the program
D. Provides a means of testing individual parts of the program
Correct Option: Provides a means of reducing the size of the program
33. Program code making use of a given module is called a ______ of the module.
A. Client
B. Docstring
C. Interface
D. Modularity
Correct Option: Client
34. ______ is a string literal denoted by triple quotes for providing the specifications of certain program elements.
A. Interface
B. Modularity
C. Client
D. Docstring
Correct Option: Docstring
35. Which of the following is true about top-down design process?
A. The details of a program design are addressed before the overall design
B. Only the details of the program are addressed
C. The overall design of the program is addressed before the details
D. Only the design of the program is addressed
Correct Option: The overall design of the program is addressed before the details
36. What will be the output of the following Python code?
#mod1
def change(a):
b=[x*2 for x in a]
print(b)
#mod2
def change(a):
b=[x*x for x in a]
print(b)
from mod1 import change
from mod2 import change
#main
s=[1,2,3]
change(s)
A. [2,4,6]
B. [1,4,9]
C. [2,4,6] [1,4,9]
D. There is a name clash
Correct Option: There is a name clash
37. Which of the following isn’t true about main modules?
A. When a python file is directly executed, it is considered main module of a program
B. Main modules may import any number of modules
C. Special name given to main modules is: __main__
D. Other main modules can import main modules
Correct Option: Other main modules can import main modules
38. Which of the following is not a valid namespace?
A. Global namespace
B. Public namespace
C. Built-in namespace
D. Local namespace
Correct Option: Public namespace
39. Which of the following is false about “import modulename†form of import?
A. The namespace of imported module becomes part of importing module
B. This form of import prevents name clash
C. The namespace of imported module becomes available to importing module
D. The identifiers in module are accessed as: modulename.identifier
Correct Option: The namespace of imported module becomes part of importing module
40. Which of the following is false about “from-import†form of import?
A. The syntax is: from modulename import identifier
B. This form of import prevents name clash
C. The namespace of imported module becomes part of importing module
D. The identifiers in module are accessed directly as: identifier
Correct Option: This form of import prevents name clash
41. Which of the statements about modules is false?
A. In the “from-import†form of import, identifiers beginning with two underscores are private and aren’t imported
B. dir() built-in function monitors the items in the namespace of the main module
C. In the “from-import†form of import, all identifiers regardless of whether they are private or public are imported
D. When a module is loaded, a compiled version of the module with file extension .pyc is automatically produced
Correct Option: In the “from-import†form of import, all identifiers regardless of whether they are private or public are imported
42. What will be the output of the following Python code?
from math import factorial
print(math.factorial(5))
A. 120
B. Nothing is printed
C. Error, method factorial doesn’t exist in math module
D. Error, the statement should be: print(factorial(5))
Correct Option: Error, the statement should be: print(factorial(5))
43. What is returned by math.ceil(3.4)?
A. 3
B. 4
C. 4.0
D. 3.0
Correct Option: 4
44. What is the value returned by math.floor(3.4)?
A. 3
B. 4
C. 4.0
D. 3.0
Correct Option: 3
45. What will be the output of print(math.copysign(3, -1))?
A. 1
B. 1.0
C. -3
D. -3.0
Correct Option: -3.0
46. What is displayed on executing print(math.fabs(-3.4))?
A. -3.4
B. 3.4
C. 3
D. -3
Correct Option: 3.4
47. Is the output of the function abs() the same as that of the function math.fabs()?
A. sometimes
B. always
C. never
D. none of the mentioned
Correct Option: sometimes
48. What is the value returned by math.fact(6)?
A. 720
B. 6
C. [1, 2, 3, 6]
D. error
Correct Option: error
49. What is the value of x if x = math.factorial(0)?
A. 0
B. 1
C. error
D. none of the mentioned
Correct Option: 1
50. What is math.factorial(4.0)?
A. 24
B. 1
C. error
D. none of the mentioned
Correct Option: 24
51. What will be the output of print(math.factorial(4.5))?