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Page 1 of 20

1. Which of the following expression evaluate to True? (Select two answers)

len(''•) == 1

len(""" """) == o

chr(ordCA') + 1) == 'B'

ord("Z") - ord("z") -- ord("0")

2. With regards to the directory structure below, select the proper forms of the directives in order to import module_a. (Select two answers)

import pypack.module_a

import module_a from pypack

import module_a

from pypack import module_a

3. You are going to read 16 bytes from a binary file into a bytearray called data .

Which lines would you use?

data = bytearray (16) bf.readinto (data)

data = binfile.read (bytearray (16))

bf. readinto (data = bytearray (16))

data = bytearray (binfile.read (16))

4. Which of the following statement are true? (Select two answers)

closing an open file is performed by the closefile ( ) function

the second open ( ) argument describes the open mode and defaults to ‘w’

if open ( ) ‘s second argument is ‘r’ the file must exist or open will fail

if open ( )’s second argument is ‘w’ and the invocation succeeds, the previous file’s content is lost

5. The__bases__property contains:

base class locations (addr)

base class objects (class)

base class names (str)

base class ids (int)

6. The following class hierarchy is given .

What is the expected out of the code?

7. A method for passing the arguments used by the following snippet is called:

sequential

named

positional

keyword

8. If you want to access an exception object's components and store them in an object called e, you have to use the following form of exception statement

except Exception(e):

except e=Exception:

except Exception as e:

such an action is not possible in Python

9. What is true about Object-Oriented Programming in Python? (Select two answers)

encapsulation allows you to protect some data from uncontrolled access

the arrows on a class diagram are always directed from a superclass towards its subclass

inheritance is the relation between a superclass and a subclass

an object is a recipe for a class

10. What is the expected behavior of the following code?

It outputs False

It outputs nothing

It outputs True

It raises an exception

Page 2 of 20

11. If you need to serve two different exceptions called Ex1 and Ex2 in one except branch, you can write:

except Ex1 Ex2:

except (ex1, Ex2):

except Ex1, Ex2:

except Ex1+Ex2:

12. What is the expected behavior of the following code?

It will:

print 0

cause a runtime exception

prints 3

print an empty line

13. Which of the following expression evaluate to True? (Select two answers)

A)

Option A

Option B

Option C

Option D

14. What can you deduce from the following statement? (Select two answers)

str = open('file.txt', "rt")

str is a string read in from the file named file.txt

a newlina character translation will be performed during the reads

if file. txt does not exist, it will be created

the opened file cannot be written with the use of the str variable

15. What is the expected behavior of the following code?

it raises an exception

it outputs True

it outputs False

it outputs nothing

16. What is the expected behavior of the following code?

it outputs 'None'

it outputs 3

it raises an exception

it outputs 0

17. What is the expected behavior of the following code?

it outputs [1, 3]

the code is erroneous and it will not execute

it outputs [3, 1]

it outputs [4, 2, 0]

18. What is the expected behavior of the following code?

it outputs 2

the code is erroneous and it will not execute

it outputs 1

it outputs 3

19. What is the expected output of the following snippet?

the code is erroneous

20. Assuming that the following code has been executed successfully, selected the expression which evaluate to True (Select two answers)

a ( ) == 4

a is not None

b ( ) == 4

a ! = b

Page 3 of 20

21. Which of the following statements are true? (Select two answers)

open () is a function which returns an int that represents a physical file handle

the second open () argument is optional

instd, outstd, errstd are the names of pre-opened streams

if invoking open () fails, the value None is returned

22. What is the expected output of the following snippet?

23. A variable stored separately in every object is called:

there are no such variables, all variables are shared among objects

a class variable

an object variable

an instance variable

24. Assuming that the following code has been executed successfully, select the expressions which evaluate to True (Select two answers.)

a is not None

a ! =b

b () ==4

a () == 4

25. What is the expected behavior of the following code?

it outputs list assignment index out of range

the code is erroneous and it will not execute

it outputs <class 'IndexError'>

it outputs error

26. Assuming that the following inheritance set is in force, which of the following classes are declared properly? (Select two answers)

class Class_4 (D, A) : pass

class Class_1(C,D): pass

class Class_3(A,C): pass

class Class_2(B,D): pass

27. What is the expected behavior of the following code?

it outputs 2

the code is erroneous and it will not execute

it outputs 3

it outputs :

28. What is true about Python packages? (Select two answers)

the__name__variable content determines the way in which the module was run

a package can be stored as a tree of sub-directories/sub-folders

__pycache__is the name of a built-in variable

hashbang is the name of a built-in Python function

29. What is the expected output of the following code?

abcef

The program will cause a runtime exception error

acdef

abdef

30. A Python module named pymod, py contains a function named pyfun ( ).

Which of the following snippets will let you invoke the function? (Select two answers)

From pymod import ‘ Pymod.pyfun ( )

Import pymod Pymod. Pyfun ( )

Import pyfun from pymod Pyfun ( )

From pymod import pyfun Pyfun ( )

Page 4 of 20

31. You need data which can act as a simple telephone directory. You can obtain it with the following clauses (choose two relevant variants; assume that no other items have been created before)

dir={'Mom':5551234567, 'Dad':5557654321>

dir={'Mom':'5551234567', * Dad':'5557654321'}

dir={Mom:5551234567, Dad:5557654321}

dir={Mom:'5551234567', Dad:'5557654321'}

32. Which of the following invocations are valid? (Select two answers)

sorted ("python'')

"python" .sort ( )

sort" ("python")

"python' ,find (")

33. What is the expected behavior of the following code?

it outputs 1

it outputs 0

it raises an exception

it outputs 2

34. What is the expected output of the following code if there is no file named non existing_file inside the working directory?

2 2

1 3

1 2 3

2 2 3

35. What will the value of the i variable be when the following loop finishes its execution?

the variable becomes unavailable

36. Assuming that the math module has been successfully imported, which of the following expressions evaluate to True? (Select two answers)

math. hypot (3,4) == math.sqrt (25)

math. hypot (2,5) == math.truec (2.5)

math. hypot (2,5) == math.true (2.5)

math. cell (2,5) == math.floor (2.5)

37. What is a true about python class constructors? (Select two answers)

the constructor must have at least one parameter

the constructor must return a value other than None

the constructor is a method named_init_

there can the more than one constructor in a Python class.

38. Assuming that the code below has been executed successfully, which of the following expressions evaluate to True? (Select two answers)

'var' in Object.__dict__

'prop' in Class.__dict

len(Object.__diet__) == 1

'var1 in Class, dict

39. Which of the following expressions evaluate to True? (Select two answers)

str(1-1) in '012345£739'[:2]

'phd' in 'alpha'

'deb' not in 'abcde' [::-1]

'True' not in 'False'

40. What will be the value of the i variable when the while e loop finishes its execution?

the variable becomes unavailable

Page 5 of 20

41. What is the expected behavior of the following code?

it outputs 1

it outputs 2

the code is erroneous and it will not execute

it outputs 3

42. Assuming that the V variable holds an integer value to 2, which of the following operators should be used instead of OPER to make the expression equal to 1?

V OPER 1 -

<<<

>>>

43. What can you do if you don’t like a long package path like this one?

you can make an alias for the name using the alias keyword

nothing, you need to come to terms with it

you can shorten it to alpha. zeta and Python will find the proper connection

you can make an alias for the name using the as keyword

44. An operator able to perform bitwise shifts is coded as (select two answers)

- -

45. What is the expected output of the following snippet?

abc

The code will cause a runtime exception

ABC

123

46. The following expression

1+-2

is:

equal to 1

invalid

equal to 2

equal to -1

47. Which of the following lines of code will work flawlessly when put independently inside theadd_new () method in order to make the snippet's output equal to [0, 1, 1]? (Select two answers)

put self.store(1])

self put stire(1])

self .put self.get () [-1])

self .put (self.store[1])

48. What is the expected output of the following code?

def foo(x,y,z):

return x(y) - x(z)

print{f00(lambda x: x % 2, 2, 1) )

-1

an exception is raised

49. What is true about Python packages? (Select two answers)

the sys.path variable is a list of strings

_pycache_is a folder that stores semi-completed Python modules

a package contents can be stored and distributed as an mp3 file

a code designed to initialize a package's state should be placed inside a file named init.py

50. What is the expected output of the following code?

an exception is raised

Page 6 of 20

51. Which of the following expression evaluate to True? (Select two answers)

len(''•) == 1

len(""" """) == o

chr(ordCA') + 1) == 'B'

ord("Z") - ord("z") -- ord("0")

52. With regards to the directory structure below, select the proper forms of the directives in order to import module_a. (Select two answers)

import pypack.module_a

import module_a from pypack

import module_a

from pypack import module_a

53. You are going to read 16 bytes from a binary file into a bytearray called data .

Which lines would you use? (Select two answers)

data = bytearray (16) bf.readinto (data)

data = binfile.read (bytearray (16))

bf. readinto (data = bytearray (16))

data = bytearray (binfile.read (16))

54. Which of the following statement are true? (Select two answers)

closing an open file is performed by the closefile ( ) function

the second open ( ) argument describes the open mode and defaults to ‘w’

if open ( ) ‘s second argument is ‘r’ the file must exist or open will fail

if open ( )’s second argument is ‘w’ and the invocation succeeds, the previous file’s content is lost

55. The__bases__property contains:

base class locations (addr)

base class objects (class)

base class names (str)

base class ids (int)

56. The following class hierarchy is given .

What is the expected out of the code?

57. A method for passing the arguments used by the following snippet is called:

sequential

named

positional

keyword

58. If you want to access an exception object's components and store them in an object called e, you have to use the following form of exception statement

except Exception(e):

except e=Exception:

except Exception as e:

such an action is not possible in Python

59. What is true about Object-Oriented Programming in Python? (Select two answers)

encapsulation allows you to protect some data from uncontrolled access

the arrows on a class diagram are always directed from a superclass towards its subclass

inheritance is the relation between a superclass and a subclass

an object is a recipe for a class

60. What is the expected behavior of the following code?

It outputs False

It outputs nothing

It outputs True

It raises an exception

Page 7 of 20

61. If you need to serve two different exceptions called Ex1 and Ex2 in one except branch, you can write:

except Ex1 Ex2:

except (ex1, Ex2):

except Ex1, Ex2:

except Ex1+Ex2:

62. What is the expected behavior of the following code?

It will:

print 0

cause a runtime exception

prints 3

print an empty line

63. Which of the following expression evaluate to True? (Select two answers)

A)

Option A

Option B

Option C

Option D

64. What can you deduce from the following statement? (Select two answers)

str = open('file.txt', "rt")

str is a string read in from the file named file.txt

a newlina character translation will be performed during the reads

if file. txt does not exist, it will be created

the opened file cannot be written with the use of the str variable

65. What is the expected behavior of the following code?

it raises an exception

it outputs True

it outputs False

it outputs nothing

66. What is the expected behavior of the following code?

it outputs 'None'

it outputs 3

it raises an exception

it outputs 0

67. What is the expected behavior of the following code?

it outputs [1, 3]

the code is erroneous and it will not execute

it outputs [3, 1]

it outputs [4, 2, 0]

68. What is the expected behavior of the following code?

it outputs 2

the code is erroneous and it will not execute

it outputs 1

it outputs 3

69. What is the expected output of the following snippet?

the code is erroneous

70. Assuming that the following code has been executed successfully, selected the expression which evaluate to True (Select two answers)

a ( ) == 4

a is not None

b ( ) == 4

a ! = b

Page 8 of 20

71. Which of the following statements are true? (Select two answers)

open () is a function which returns an int that represents a physical file handle

the second open () argument is optional

instd, outstd, errstd are the names of pre-opened streams

if invoking open () fails, the value None is returned

72. What is the expected output of the following snippet?

73. A variable stored separately in every object is called:

there are no such variables, all variables are shared among objects

a class variable

an object variable

an instance variable

74. Assuming that the following code has been executed successfully, select the expressions which evaluate to True (Select two answers.)

a is not None

a ! =b

b () ==4

a () == 4

75. What is the expected behavior of the following code?

it outputs list assignment index out of range

the code is erroneous and it will not execute

it outputs <class 'IndexError'>

it outputs error

76. Assuming that the following inheritance set is in force, which of the following classes are declared properly? (Select two answers)

class Class_4 (D, A) : pass

class Class_1(C,D): pass

class Class_3(A,C): pass

class Class_2(B,D): pass

77. What is the expected behavior of the following code?

it outputs 2

the code is erroneous and it will not execute

it outputs 3

it outputs :

78. What is true about Python packages? (Select two answers)

the__name__variable content determines the way in which the module was run

a package can be stored as a tree of sub-directories/sub-folders

__pycache__is the name of a built-in variable

hashbang is the name of a built-in Python function

79. What is the expected output of the following code?

abcef

The program will cause a runtime exception error

acdef

abdef

80. A Python module named pymod, py contains a function named pyfun ( ).

Which of the following snippets will let you invoke the function? (Select two answers)

From pymod import ‘ Pymod.pyfun ( )

Import pymod Pymod. Pyfun ( )

Import pyfun from pymod Pyfun ( )

From pymod import pyfun Pyfun ( )

Page 9 of 20

81. You need data which can act as a simple telephone directory. You can obtain it with the following clauses (choose two relevant variants; assume that no other items have been created before)

dir={'Mom':5551234567, 'Dad':5557654321>

dir={'Mom':'5551234567', * Dad':'5557654321'}

dir={Mom:5551234567, Dad:5557654321}

dir={Mom:'5551234567', Dad:'5557654321'}

82. Which of the following invocations are valid? (Select two answers)

sorted ("python'')

"python" .sort ( )

sort" ("python")

"python' ,find (")

83. What is the expected behavior of the following code?

it outputs 1

it outputs 0

it raises an exception

it outputs 2

84. What is the expected output of the following code if there is no file named non existing_file inside the working directory?

2 2

1 3

1 2 3

2 2 3

85. What will the value of the i variable be when the following loop finishes its execution?

the variable becomes unavailable

86. Assuming that the math module has been successfully imported, which of the following expressions evaluate to True? (Select two answers)

math. hypot (3,4) == math.sqrt (25)

math. hypot (2,5) == math.truec (2.5)

math. hypot (2,5) == math.true (2.5)

math. cell (2,5) == math.floor (2.5)

87. What is a true about python class constructors? (Select two answers)

the constructor must have at least one parameter

the constructor must return a value other than None

the constructor is a method named_init_

there can the more than one constructor in a Python class.

88. Assuming that the code below has been executed successfully, which of the following expressions evaluate to True? (Select two answers)

'var' in Object.__dict__

'prop' in Class.__dict

len(Object.__diet__) == 1

'var1 in Class, dict

89. Which of the following expressions evaluate to True? (Select two answers)

str(1-1) in '012345£739'[:2]

'phd' in 'alpha'

'deb' not in 'abcde' [::-1]

'True' not in 'False'

90. What will be the value of the i variable when the while e loop finishes its execution?

the variable becomes unavailable

Page 10 of 20

91. What is the expected behavior of the following code?

it outputs 1

it outputs 2

the code is erroneous and it will not execute

it outputs 3

92. Assuming that the V variable holds an integer value to 2, which of the following operators should be used instead of OPER to make the expression equal to 1?

V OPER 1 -

<<<

>>>

93. What can you do if you don’t like a long package path like this one?

you can make an alias for the name using the alias keyword

nothing, you need to come to terms with it

you can shorten it to alpha. zeta and Python will find the proper connection

you can make an alias for the name using the as keyword

94. An operator able to perform bitwise shifts is coded as (select two answers)

- -

95. What is the expected output of the following snippet?

abc

The code will cause a runtime exception

ABC

123

96. The following expression

1+-2

is:

equal to 1

invalid

equal to 2

equal to -1

97. Which of the following lines of code will work flawlessly when put independently inside the add_new () method in order to make the snippet's output equal to [0, 1, 1]? (Select two answers)

put self.store(1])

self put stire(1])

self .put self.get () [-1])

self .put (self.store[1])

98. What is the expected output of the following code?

def foo(x,y,z):

return x(y) - x(z)

print{f00(lambda x: x % 2, 2, 1) )

-1

an exception is raised

99. What is true about Python packages? (Select two answers)

the sys.path variable is a list of strings

_pycache_is a folder that stores semi-completed Python modules

a package contents can be stored and distributed as an mp3 file

a code designed to initialize a package's state should be placed inside a file named init.py

100. What is the expected output of the following code?

an exception is raised

Page 11 of 20

101. Executing the following snippet

will cause the dct:

to hold two keys named ‘pi’ linked to 3.14 and 3.1415 respectively

to hold two key named ‘pi’ linked to 3.14 and 3.1415

to hold one key named ‘pi’ linked to 3.1415

to hold two keys named ‘pi’ linked to 3.1415

102. Python's built-in function named open () tries to open a file and returns:

an integer value identifying an opened file

an error code (0 means success)

a stream object

always None

103. Assuming that the code below has been placed inside a file named code.py and executed successfully, which of the following expressions evaluate to True? (Select two answers)

str(Object) == 'Object'

_name == _main_'

Class

_module_ == 'ClassA'

len(Class

__bases__) == 1

104. Which of the following lambda function definitions are correct? (Select two answers)

lambda X: None

lambda: 3,1415

lambda x: def fun(x): return x

lambda lambda: lambda * lambda

105. What is the expected behavior of the following code?

the code is erroneus and it will not execute

it outputs [2, 4]

it outputs [4, 2]

it outputs [0, 1, 2, 3, 4]

106. What is the expected behavior of the following code?

it outputs 2

the code is erroneous and it will not execute

it outputs 1

it outputs 3

107. What is the expected behavior of the following code?

it outputs 6

it outputs 1

it outputs 3

it raises an exception

108. The first parameter of each method:

holds a reference to the currently processed object

is always set to None

is set to a unique random value

is set by the first argument's value

109. If you need to serve two different exceptions called Ex1 and Ex2 in one except branch, you can write:

except Ex1 Ex2:

except (ex1, Ex2):

except Ex1, Ex2:

except Ex1+Ex2:

110. Assuming that String is six or more letters long, the following slice String [1:-2] is shorter than the original string by:

four chars

three chars

one char

two chars

Page 12 of 20

111. Which of the following words can be used as a variable name? (Select two valid names)

for

True

true

For

112. A Python module named pymod.py contains a variable named pyvar.

Which of the following snippets will let you access the variable? (Select two answers)

import pyvar from pymod pyvar = 1

from pymod import pyvar = 1

from pymod import pyvar pyvar ()

import pymod pymod.pyvar = 1

113. A file name like this one below says mat: (select three answers)

services. cpython-36.pyc

the interpreter used to generate the file is version 3.6

it has been produced by CPython

it is the 36th version of the file

the file comes from the services . py source file

114. Python strings can be “glued” together using the operator:

115. What is the expected output of the following code?

abcef

The program will cause a runtime exception error

acdef

abdef

116. A class constructor (Select two answers)

can return a value

cannot be invoked directly from inside the class

can be invoked directly from any of the subclasses

can be invoked directly from any of the superclasses

117. What would you use instead of XXX if you want to check whether a certain ‘ key' exists in a dictionary called diet? (Select two answers)

II

if XXX:

print ("Key exists")

'key' in diet

diet['key'] != None

diet.exists('key')

'key' in diet.keys()

118. Is it possible to safely check if a class object has a certain attribute0

yes, by using the hasattr attribute

yes. by using the hasattr () method

yes, by using the hasattr () function

no, it is not possible

119. What is true about Python class constructors? (Select two answers)

the constructor's first parameter identifies an object currently being created

the constructor cannot use the default values of the parameters

the constructor can be invoked directly under strictly defined circumstances

super-class constructor is invoked implicitly during constructor execution

120. What is the expected output of the following code if the file named existing_text_file is a non-zero length text file located inside the working directory?

the length of the first line from the file

-1

the number of lines contained inside the file

the length of the last line from the file

Page 13 of 20

121. Which of the following lambda definitions are correct? (Select two answers)

lanbda x, y; return x\y - x%y

lambda x, y: x//y - x%y

lambda (x, y = x\y x%y

lambda x, y: (x, y)

122. What can you deduce from the following statement? (Select two answers)

str = open('file.txt', "rt")

str is a string read in from the file named file.txt

a newlina character translation will be performed during the reads

if file. txt does not exist, it will be created

the opened file cannot be written with the use of the str variable

123. Which of the following sentences are true? (Select two answers)

lists may not be stored inside tuples

tuples may be stored inside lists

tuples may not be stored inside tuples

lists may be stored inside lists

124. The following class hierarchy is given.

What is the expected out of the code?

125. Which of the following expressions evaluate to True? (Select two answers)

121 + 1 != '!'+ 2 * '2'

'AbC' lower () 'AB'<

'1'+ '1'+ '1'< '1'*3'

'3.14'!= str(3.1415)

126. Which of the following expression evaluate to True? (Select two answers)

len(''•) == 1

len(""" """) == o

chr(ordCA') + 1) == 'B'

ord("Z") - ord("z") -- ord("0")

127. What is the expected output of the following code?

def foo(x,y,z):

return x(y) - x(z)

print {f00(lambda x: x % 2, 2, 1) )

-1

an exception is raised

128. What is the expected behavior of the following code?

It will:

print 0

cause a runtime exception

prints 3

print an empty line

129. Which of the following expression evaluate to True? (Select two answers)

'in not' in 'not'

'in' in 'Thames'

't' . upper ( ) in 'Thames'

'in' in 'in'

130. What is the expected output of the following code if existing_file is the name of a file located inside the working directory?

1 2

1 2 3

1 3

2 3

Page 14 of 20

131. Assuming that the following code has been executed successfully, select the expressions which evaluate to True (Select two answers)

a is b

b( ) > 2

a() > 2

a is not None

132. How many elements will the list2 list contain after execution of the following snippet?

list1 = [False for i in range (1, 10) ]

list2 = list1 [-1:1:-1]

zero

five

seven

three

133. What will be the value of the i variable when the while e loop finishes its execution?

the variable becomes unavailable

134. The following class hierarchy is given.

What is the expected output of the code?

135. Which one of the platform module functions should be used to determine the underlying platform name?

platform.uname ()

platform.platform ()

platform.python_version()

platform.processor()

136. What is true about the following snippet? (Select two answers)

the code will raise an unhandled exception

the siring I feel fine 'will be seen

the string it's nice to see you will be seen

the string what a pity will be seen

137. What is true about Python packages? (Select two answers)

the__name__variable content determines the way in which the module was run

a package can be stored as a tree of sub-directories/sub-folders

__pycache__is the name of a built-in variable

hashbang is the name of a built-in Python function

138. A two-parameter lambda function raising its first parameter to the power of the second parameter should be declared as:

lambda (x, y) = x ** y

lambda (x, y): x ** y

def lambda (x, y): return x ** y

lambda x, y: x ** y

139. What can you do if you don't like a long package path tike this one0 import alpha.beta.gamma.delta.epsiIon.zeta

you can make an alias for the name using the a 1 i a s keyword

nothing; you need to come to terms with it

you can shorten it to alpha. zeta and Python will find the proper connection

you can make an alias for the name using die as keyword

140. What is the expected behavior of the following code?

it outputs error

it outputs list assignment index out of range

the code is erroneous and it will not execute

it outputs <class ' IndexError’ >

Page 15 of 20

141. Which of the listed actions can be applied to the following tuple? (Select two answers)

tup [:]

tup.append (0)

tup [0]

del tup

142. There is a stream named s open for writing.

What option will vou select to write a line to the stream''

s.write("Hello
")

write(s, "Hello")

s.writeln("Hello")

s.writeline("Hello")

143. What is the expected output of the following code if existing_file is the name of a file located inside the working directory?

1 2

1 2 3

1 3

2 3

144. Files with the suffix .pyc contain:

Python 4 source code

backups

temporary data

semi-compiled Python code

145. What is true about Python packages? (Select two answers)

the sys.path variable is a list of strings

_pycache_is a folder that stores semi-completed Python modules

a package contents can be stored and distributed as an mp3 file

a code designed to initialize a package's state should be placed inside a file named init.py

146. Which of the following statements are true? (Select two answers)

e is an escape sequence used to mark the end of lines

ASCII is synonymous with UTF-8

II in ASCII stands for Information Interchange

a code point is a number assigned to a given character

147. What is the expected output of the following snippet?

the code is erroneous

148. Which of the following invocations are valid? (Select two answers)

rfind("python","r")

sorted("python")

"python".sort ()

"python".index("th")

149. Which of the following lambda definitions are correct? (Select two answers)

lanbda x, y; return x\y - x%y

lambda x, y; x\y - x%y

lambda (x, y = x\y x%y

lambda x, y; (x, y)

150. If you need a function that does nothing, what would you use instead of XXX? (Select two answers)

def idler ( ):

XXX

pass

return

exit

None

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151. Which one of the platform module functions should be used to determine the underlying platform name?

platform.uname ()

platform.platform ()

platform.python_version()

platform.processor()

152. A file name like this one below says mat: (select three answers)

services. cpython-36.pyc

the interpreter used to generate the file is version 3.6

it has been produced by CPython

it is the 36th version of the file

the file comes from the services . py source file

153. What is the expected behavior of the following code?

the code is erroneus and it will not execute

it outputs [2, 4]

it outputs [4, 2]

it outputs [0, 1, 2, 3, 4]

154. Which of the following lambda function definitions are correct? (Select two answers)

lambda X: None

lambda: 3,1415

lambda x: def fun(x): return x

lambda lambda: lambda * lambda

155. Assuming that the snippet below has been executed successfully, which of the following expressions will evaluate to True? (Select two answers)

string = 'python' [::2]

string = string[-1] + string[-2]

string[0] == string[-1]

string is None

len (string] == 3

string[0] == 'o'

156. The following class definition is given.

We want the show () method to invoke the get () method, and then output the value the get () method returns.

Which of the invocations should be used instead of XXX?

print (get(self))

print (self.get())

print (get())

print (self.get (val))

157. A property that stores information about a given class's super-classes is named:

_upper_

_bases_

_ancestors_

_super_

158. The simplest possible class definition in Python can be expressed as:

class X:

class X: pass

class X: return

class X: {}

159. What is the expected out of the following code of the file named zero_length_existing_file is a zero-length file located inside the working directory?

-1

an errno value corresponding to file not found

160. What is the expected behavior of the following code?

it outputs error

it outputs list assignment index out of range

the code is erroneous and it will not execute

it outputs <class ' IndexError’ >

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161. Which of the following expression evaluate to True? (Select two answers)

'in not' in 'not'

'in' in 'Thames'

't' . upper ( ) in 'Thames'

'in' in 'in'

162. Assuming that the code below has been executed successfully, which of the following expressions will always evaluate to True? (Select two answers)

import random

v1 = random. random()

v2 = random. random()

len(random. sample([1,2,3],1)) > 2

v1 == v2

random.choice{[1,2,3]) > 0

v1 < 1

163. With regards to the directory structure below, select the proper forms of the directives in order to import module_a. (Select two answers)

import pypack.module_a

import module_a from pypack

import module_a

from pypack import module_a

164. Assuming that the following piece of code has been executed successfully, which of the expressions evaluate to True? (Select two answers)

obj_b.prop_a == 3

hasattr(obj_b, 'prop_aa')

isinstance(obj_c,A)

VarA == 3

165. Which of the following statements are true? (Select two answers)

open () requires a second argument

open () is a function which returns an object that represents a physical file

instd, outstd, errstd are the names of pre-opened streams

if invoking open () fails, an exception is raised

166. Which line can be used instead of the comment to cause the snippet to produce the following expected output? (Select two answers)

Expected output:

1 2 3

Code:

c, b, a = b, a, c

c, b, a = a, c, b

a, b, c = c, a, b

a, b, c = a, b, c

167. How many elements will the list1 list contain after execution of the following snippet?

two

zero

one

three

168. The following class hierarchy is given.

What is the expected output of the code?

169. Assuming that the following snippet has been successfully executed, which of the equations are True? (Select two answers)

len(a) == len (b)

b[0] fe- 1 == a[0]

a[0] = b[0]

a[0] + 1 == b[0]

170. A method for passing the arguments used by the following snippet is called:

sequential

named

positional

keyword

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171. What is the expected output of the following snippet?

True lower

True upper

False upper

False lower

172. Assuming that the code below has been placed inside a file named code.py and executed successfully, which of the following expressions evaluate to True? (Select two answers)

str(Object) == 'Object'

_name == _main_'

Class

_module_ == 'ClassA'

len(Class

__bases__) == 1

173. How many lines does the following snippet output?

three

one

two

four

174. You are going to read 16 bytes from a binary file into a bytearray called data.

Which lines would you use? (Select two answers)

data = bytearray (16) bf.readinto (data)

data = binfile.read (bytearray (16))

bf. readinto (data = bytearray (16))

data = bytearray (binfile.read (16))

175. Assuming that the following inheritance set is in force, which of the following classes are declared properly? (Select two answers)

class Class_4 (D, A) : pass

class Class_1(C,D): pass

class Class_3(A,C): pass

class Class_2(B,D): pass

176. Which of the following lines of code will work flawlessly when put independently inside the add_new () method in order to make the snippet's output equal to [0, 1, 1]? (Select two answers)

put self.store(1])

self put stire(1])

self .put self.get () [-1])

self .put (self.store[1])

177. What is the expected behavior of the following code?

it outputs 'None'

it outputs 3

it raises an exception

it outputs 0

178. What is true about Python packages? (Select two answers)

the__name__variable content determines the way in which the module was run

a package can be stored as a tree of sub-directories/sub-folders

__pycache__is the name of a built-in variable

hashbang is the name of a built-in Python function

179. What will the value of the i variable be when the following loop finishes its execution?

the variable becomes unavailable

180. Which of the following literals reflect the value given as 3 4. 2 3 (select two answers)

.3423e2

3423e-2

.3423e-2

3423e2

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181. Which of the following lambda function definitions are correct? (Select two answers)

lambda X: None

lambda: 3,1415

lambda x: def fun(x): return x

lambda lambda: lambda * lambda

182. What is true about the following snippet? (Select two answers)

the code will raise an unhandled exception

the siring I feel fine 'will be seen

the string it's nice to see you will be seen

the string what a pity will be seen

183. Which of the following expression evaluate to True? (Select two answers)

'in not' in 'not'

'in' in 'Thames'

't' . upper ( ) in 'Thames'

'in' in 'in'

184. Which of the following snippets will execute without raising any unhandled exceptions? (Select answers)

A)

Option A

Option B

Option C

Option D

185. Which of the following invocations are valid? (Select two answers)

rfind("python","r")

sorted("python")

"python".sort ()

"python".index("th")

186. What is the expected behavior of the following code?

it outputs 6

it outputs 1

it outputs 3

it raises an exception

187. What is the expected behavior of the following code?

it outputs 'None'

it outputs 3

it raises an exception

it outputs 0

188. What is the expected behavior of the following code?

x = 8 ** (1/3)

y = 2. if x < 2.3 else 3.

print(y)

it outputs 2.0

it outputs 2. 5

the code is erroneus and it will not execute

it outputs 3.0

189. Assuming that the code below has been executed successfully, which of the following expressions will always evaluate to True? (Select two answers)

import random

v1 = random. random()

v2 = random. random()

len(random. sample([1,2,3],1)) > 2

v1 == v2

random.choice{[1,2,3]) > 0

v1 < 1

190. What is the expected out of the following code of the file named zero_length_existing_file is a zero-length file located inside the working directory?

-1

an errno value corresponding to file not found

Page 20 of 20

191. With regards to the directory structure below, select the proper forms of the directives in order to import module_a. (Select two answers)

import pypack.module_a

import module_a from pypack

import module_a

from pypack import module_a

192. Which one of the platform module functions should be used to determine the underlying platform name?

platform.uname ()

platform.platform ()

platform.python_version()

platform.processor()

193. What is a true about python class constructors? (Select two answers)

the constructor must have at least one parameter

the constructor must return a value other than None

the constructor is a method named_init_

there can the more than one constructor in a Python class.

194. Assuming that the following inheritance set is in force, which of the following classes are declared properly? (Select two answers)

class Class_4 (D, A): pass

class Class_1(C, D): pass

class Class_3(A, C): pass

class Class_2(B, D): pass

195. What is the expected output of the following code? def foo(x,y,z): return x(y) - x(z) print{f00(lambda x: x % 2, 2, 1) )

-1

an exception is raised

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