Final Exam (Part 1 - Questions)
22. October 2024
Question 1
What is the result of the following operation 9 % 4?
2.25
❌2
❌2.0
❌1
✅Question 2
What is the value of variable b after the execution of the following statements?
10
✅5
❌(5, 10)
❌15
❌Question 3
The result of which of the following mathematical operations has the data type integer?
2.0 + 3
❌9 ** 0.5
❌2 // 3
✅2 / 3
❌2 % 3
✅Question 4
What is the result of the following statement?
12 34
❌"12", "34"
❌1234
✅46
❌Question 5
What is the value of a after the following statements have been executed?
"1234"
❌"1230"
✅"127"
❌"123"
❌Question 6
According to the following code, what is the drink?
Whiskey
❌Milk
❌Beer
❌Cola
✅Question 7
Which of the following numbers assigned to the variable a makes the following expression True?
Note: There are 2 correct answers to this question.
17
❌18
❌14
✅16
✅15
❌Question 8
Which of the following statements about lists are correct?
Note: There are 3 correct answers to this question.
Lists can contain elements of all data types. That means there can be lists of integers or list of strings.
✅Lists can be multiplied with integers. The result is again a list.
✅All elements within a list must have the same data type.
❌The keyword "in" is used to check if a given element is part of a list.
✅The elements of a list are separated by semicolons ";".
❌Question 9
What is the content of variable list1 after the following statement has been executed?
[1, 3, 5, 2, 4, 6]
✅[[1, 3, 5], [2, 4, 6]]
❌[1, 2, 3, 4, 5, 6]
❌[3, 7, 11]
❌Question 10
What is the value of variable list1 after the following statements have been executed?
[1, 1, 1, 2, 3]
❌[1, 1, 3]
❌[1, 1, 1, 2, 2, 3]
✅[1, 1, 2, 2, 2, 3]
❌Question 11
What is the value of x after the following statements have been executed?
9
❌1
❌4
✅7
❌Question 12
Which sequence is generated by the following range? range(1, 9, 2)
2, 4, 6, 8
❌1, 3, 5, 7, 9, 11, 13, 15
❌1, 3, 5, 7, 9
❌1, 3, 5, 7
✅Question 13
What is the value of variable list2 after the following statements have been executed?
[4, 2, 0]
✅[0, 2, 4]
❌[3, 1]
❌[6, 4, 2, 0]
❌Question 14
What is the value of variable a after the following statements have been executed?
(1980, "July", 31)
Error
❌Potter
❌1980
✅Question 15
What is the effect of the following statements?
As the key is already available, this code runs into an error.
❌The key-value pair " "Peter" : 234 " is added to the dictionary.
❌The key-value pair " "Peter" : 123 " is replaced by " "Peter " : 234 "
✅As the key is already available, the dictionary is unchanged.
❌Question 16
What is the result of the following statements?
Variable "a" contains the value " "Hermione" "
❌Variable "a" contains the value " "Harry" "
✅Index Error
❌Key Error
❌Question 17
Which of the following statements about the while loop are correct?
Note: There are 3 correct answers to this question.
while loops can end up in infinite loops.
✅while loops should be preferred over for loops.
❌If the iteration is to be done over a sequence, for loops are preferred. If it is not clear how many iterations are required, then a while loop is (often) the better choice.
✅while loops execute the while block (that is, the conditional statements belonging to the loop) at least once.
❌The while block (that is, the conditional statements belonging to the loop) must contain at least one statement.
✅Question 18
What is the value of variable a after the following code has been executed?
65
❌54
✅66
❌55
❌Question 19
Which of the following statements about the modes used to open a file are correct?
Note: There are 3 correct answers to this question.
In mode "r", the file must exist. If an attempt is made to access a file that is not available, the FileNotFoundError is triggered.
✅In mode "r+", it is possible to read data from a file, but also to write data to the file.
✅If data is written to a file that is opened in mode "r", an error is triggered.
✅A file opened in mode "r+" has first to be read. In a second step, data can be written to the file. A file opened in mode "w+" must first have data written to the file before data can be read.
❌In mode "w+", an existing file will be opened.
❌Question 20
Which of the following statements about reading from a file are correct?
Note: There are 3 correct answers to this question.
It is possible to read the complete file into a list in one go, without a for loop, using the method ".readlines()"
✅Files are organized sequentially, therefore a for loop can be used to iterate over the lines of a file.
✅As files are organized sequentially, they can easily be converted into a list, as a list is a sequence type as well.
✅If a file is read with ".readlines()", it is not necessary to close it at the end of the program.
❌If a file is read from the beginning to the end, the read cursor is automatically positioned at the beginning of the file again.
❌Question 21
Which of the following statements about f-strings are correct?
Note: There are 3 correct answers to this question.
It is possible to add additional information into the braces, which supports the alignment of the output.
✅To indicate that a string should be treated as an f-string, an "f" simply has to be placed before the string.
✅When using an f-string, curly braces "{ }" can be used. Variables or function calls can be placed within these braces.
✅Using f-strings, the programmer has the opportunity to specify the layout. For example, the output could be in different colors, or bold, or italic.
❌f-strings have been available in Python since version 3.0.
❌Question 22
What is the result of the following statement?
['Yesterday,', 'Let', 'it', 'be,', 'Help,', 'Something']
✅"Yesterday, Let it be, Help, Something"
❌"Yesterday", " Let it be", " Help", " Something"
❌['Yesterday', 'Let it be', 'Help', 'Something']
❌Question 23
Which of the following are built-in-functions in Python?
Note: There are 2 correct answers to this question.
.strip()
❌.isdecimal()
❌int()
✅for
❌print()
✅Question 24
Which of the following statements about the syntax of functions in Python are correct?
Note: There are 2 correct answers to this question.
The definition of a function always starts with the keyword "def".
✅Functions can have none, one or more input parameters.
✅A function must have a return value.
❌The function body can consist of zero, one, or many statements.
❌The docstring is a mandatory part of the function.
❌Question 25
What is the return value of the following function?
None
❌Error
❌9
❌7
✅Question 26
What is the output of the following program?
Question 27
What is the outcome of the following program?
Question 28
What is the outcome of the following program?
Question 29
What is the output of the following program?
