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Quiz von karljmurphy, aktualisiert more than 1 year ago
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Erstellt von karljmurphy
vor etwa 9 Jahre
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Frage 1
Frage
Examine the code and determine the value of the variable b when the code completes.
Antworten
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6
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2
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None
Frage 2
Frage
Examine the code and determine the output.
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{}
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foo
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{'obj_name': 'foo'}
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{'obj_name' = 'foo'}
Frage 3
Frage
What output will be produced from this snippet of code?
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IndexError
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[]
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['a', 'b', 'c', 'd', 'e']
Frage 4
Frage
What is the difference between a tuple and a list?
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A tuple is immutable and a list is mutable.
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A list is immutable and a tuple is mutable.
Frage 5
Antworten
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in except block
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in except block after try-except
Frage 6
Frage
Is a list a heterogeneous data structure in Python?
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Yes
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No
Frage 7
Frage
If a list is mutable in Python, can it hold immutable objects?
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Yes
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No
Frage 8
Frage
A tuple is an immutable data structure in Python. Can it hold mutable objects?
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No
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Yes
Frage 9
Frage
What is the value of variable d when the code completes?
Antworten
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[1, 'Dublin', 2, 'London', 3, 'Moscow']
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{1: 'Dublin', 2: 'London', 3: 'Moscow'}
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An exception is raised
Frage 10
Frage
Is the code performing legal operations?
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Yes
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No
Frage 11
Frage
Do a and b return the same object type?
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No
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Yes
Frage 12
Frage
Determine the value of the variable b when the code completes?
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[10,20,30]
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20
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[10, 20, 50]
Frage 13
Frage
What is the output from this code?
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False
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True
Frage 14
Antworten
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15
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25
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True
Frage 15
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'age under 30'
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'age equals 25'
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None of the above
Frage 16
Antworten
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{house:1215}, 'apt
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An exception is raised
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'apt', {house:1215}
Frage 17
Antworten
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0 2
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john sarah
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An exception is raised
Frage 18
Frage
Which line of code is correct to detect if a variable is a function?
Antworten
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hasattr(obj, '__call__')
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isinstance(x, function)
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type(x) == 'function'
Frage 19
Frage
What is PEP 8?
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It runs Python bytecode
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It is a data structure
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It is a code style guideline
Frage 20
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What is the value of the variable name when the code completes?
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Kim
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Sam
Frage 21
Frage
What is the "__init__.py" file for in a Python source directory?
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It's a constructor
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Marks a directory as a Python package
Frage 22
Frage
Is new_list a shallow or deep copy of old_list?
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shallow
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deep
Frage 23
Frage
Determine what the output will be?
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['j','o','h','n']
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'John'
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'mylist'
Frage 24
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list
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set
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dictionary
Frage 25
Frage
Determine the value of a after the method is called twice.
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[10, 10]
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[]
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[10]
Frage 26
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50
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40
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70
Frage 27
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'Sar'
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'Sarah'
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'Sa'
Frage 28
Antworten
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None
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4
Frage 29
Frage
I want to read from a file on the path 'C:\newfile\textfile.txt'. What is the correct way to open the file?
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myfile = open('C:\newfile\textfile.txt', 'r')
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myfile = open(r'C:\newfile\textfile.txt', 'r')
Frage 30
Frage
Review the code. Does the variable a have a type? If so, what is the type of a?
Antworten
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Variable a does not have a type
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Variable a is of type List
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Variable a is of type String
Frage 31
Antworten
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Yes
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No
Frage 32
Antworten
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2
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1
Frage 33
Antworten
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legal
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illegal
Frage 34
Antworten
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'today'
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'TODAY'
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'str'
Frage 35
Frage
What output does the code produce?
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['jack', 'peter', 'sarah']
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['sarah']
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[ 'sarah', 'peter', jack']
Frage 36
Frage
Analyse the code and determine the result
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Infinite loop
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The code prints the following: 2 Joe
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The code prints the following: 1 2 Mary
Frage 37
Antworten
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[10]
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raises an exception
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[[10]]
Frage 38
Frage
What object types do variables a and b point to?
Antworten
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a and b point to a tuple
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a points to an int; b points to a tuple
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a and b point to an int
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