Question 1

Which of the following statements creates a tuple containing four items?
A) t = [ 1: 2: 3: 4 ]
B) t = {1, 2, 3, 4}
C) t =t = < 1; 2; 3; 4 >
D) t = (1, 2, 3, 4)

Accepted Answer

The correct syntax for creating a tuple is to use parentheses (). Therefore, the correct statement to create a tuple containing four items is t = (1, 2, 3, 4). Option A uses colons instead of commas and brackets instead of parentheses, which is not a valid syntax in Python. Option B uses curly braces instead of parentheses, which creates a set rather than a tuple. Option C is not a valid syntax in Python.

Question 2

What is the value of string1 after the following statement is executed?
String1 = "hello"[ :3 ] + "python"[ 0 ]
A) lpython
B) llo
C) help
D) lop

Accepted Answer

The slice "hello"[:3] gives "hel" and "python"[0] gives "p", so concatenating them results in "help".

Question 3

Select the answer that should be used to replace the missing code in the following statements. myList = list()
FileObj = open("myfile.dat", "rb")
While True:
Try:
Item = pickle.load(fileObj)
MyList.append(item)
< missing code >
FileObj.close()
Break
Print(myList)
A) if EOF:
B) elif Error:
C) except EOFError:
D) else while TRUE:

Accepted Answer

The missing code should be "except EOFError: break". This is because the loop should continue to read items from the file until it encounters the end-of-file (EOF) error, at which point the loop should be broken and the list should be printed. Therefore, we need to catch the specific exception for when the end-of-file is reached, which is EOFError in this case, and break out of the loop.

Question 4

In a class definition, what type of method uses the values of the object's instance variables without changing them?
A) constructor
B) accessor
C) instance
D) mutator

Accepted Answer

An accessor method (also called a getter method) is used to retrieve the values of an object's instance variables without modifying them. It is commonly used to access private instance variables in a safe manner. A constructor method is used to initialize an object's instance variables upon creation, while a mutator method (also called a setter method) is used to modify the values of an object's instance variables. An instance method is any method that operates on an instance of a class.

Question 5

What is the last line of the output when the following code is executed?
X = 2
For exp in range (5):
Print ("%2d.0" % x**exp)
A) 8.0
B) 16
C) 32
D) 16.0

Accepted Answer

The code first initializes the variable "X" as 2. Then, for each exponent "exp" from 0 to 4, it calculates and prints "X" raised to the power of "exp". Therefore, the output will be:
1.0
2.0
4.0
8.0
16.0
The last line of the output will be "16.0".

Question 6

What is the value of z after the following code is run?
Y = 0
Z = 0
For x in range(5,8):
Z = max(x, y)
Y = y + x
A) 18
B) 11
C) 7
D) 13

Accepted Answer

The answer of What is the value of z after...

Question 7

What are the values of variables x, y, and z after the following code is run?
Y = 0
Z = 0
For x in range(5,7):
If y > z:
Z, y = y, z
Y = y + x;
A) x == 7, y == 11, z == 6
B) x == 6, y == 6, z == 5
C) x = 6, y == 5, z == 6
D) x == 7, y == 12, z == 5

Accepted Answer

The answer of What are the values of variables x,...

Question 8

How do you describe a function that calls itself?
A) self_calling function
B) iterative function
C) derivative function
D) recursive function

Accepted Answer

A function that calls itself is known as a recursive function. The process of calling oneself is called recursion.

Question 9

What is the value of newList after the following code is executed?
NewList = [ "George", "John", "Thomas", "James" ]
NewList.pop()
NewList.append("Andrew")
A) [ "George", "John", "Thomas", "James", "Andrew" ]
B) [ "George", "John", "Thomas", "Andrew" ]
C) [ "Andrew", "John", "Thomas", "James" ]
D) [ "Andrew", "George", "John", "Thomas", "James" ]

Accepted Answer

The pop() function removes the last element of the list, which is "James" in this case. Then, the append() function adds "Andrew" to the end of the list. Therefore, the resulting list is [ "George", "John", "Thomas", "Andrew" ].

Question 10

What is the last line of output of the following code?
Pres = {1:"Washington", 16:"Lincoln", 35: "Kennedy", 40:"Reagan"}
For nth in pres:
Print("%2d:" % nth,pres[ nth ])
A) 35: Kennedy
B) 40: Reagan
C) 03: Kennedy
D) 04: Reagan

Accepted Answer

The last line of output is determined by the highest key value in the dictionary, which is 40 corresponding to "Reagan".

Question 11

Which of the following correctly defines a function named myFunc?
A) def myFunc():
B) func myfunc:
C) myfunc()#
D) int myFunc:

Accepted Answer

The correct syntax to define a function in Python is using the "def" keyword followed by the function name and parenthesis. The parentheses may contain parameters if required.

Quiz 1: Basic Python Programming

Which of the following statements creates a tuple containing four items?

What is the value of string1 after the following statement is executed? String1 = "hello"[ :3 ] + "python"[ 0 ]

Select the answer that should be used to replace the missing code in the following statements. myList = list() FileObj = open("myfile.dat", "rb") While True: Try: Item = pickle.load(fileObj) MyList.append(item) < missing code > FileObj.close() Break Print(myList)

In a class definition, what type of method uses the values of the object's instance variables without changing them?

What is the last line of the output when the following code is executed? X = 2 For exp in range (5) : Print ("%2d.0" % x**exp)

What is the value of z after the following code is run? Y = 0 Z = 0 For x in range(5,8) : Z = max(x, y) Y = y + x

What are the values of variables x, y, and z after the following code is run? Y = 0 Z = 0 For x in range(5,7) : If y > z: Z, y = y, z Y = y + x;

How do you describe a function that calls itself?

What is the value of newList after the following code is executed? NewList = [ "George", "John", "Thomas", "James" ] NewList.pop() NewList.append("Andrew")

What is the last line of output of the following code? Pres = {1:"Washington", 16:"Lincoln", 35: "Kennedy", 40:"Reagan"} For nth in pres: Print("%2d:" % nth,pres[ nth ])

Which of the following correctly defines a function named myFunc?