Python Lecture Notes 11

Python notes 11 Study the informal language, used by programmers use to create models of programs, that has no syntax rules and is not meant to be compiled or executed? pseudocode A(n) ________ is a diagram that graphically depicts the steps that take place in a program flowchart The ________ function reads a piece of data that has been entered at the keyboard and returns that piece of data, as a string, back to the program input() The line continuation character is a \ Which mathematical operator is used to raise 5 to the second power in Python? ** In a print statement, you can set the ________ argument to a space or empty string to stop the output from advancing to a new line end After the execution of the following statement, the variable sold will reference the numeric literal value as (n) ________ data type. sold = 256.752 float After the execution of the following statement, the variable price will reference the value price = int(68.549) 68 What is the output of the following statement? print('I\'m ready to begin') I'm ready to begin What is the output of the following statement, given that value1 = 2.0 and value2 = 12? print(value1 * value2) 24.0 What is the output of the following statement? print('The path is D:\\sample\\test.') The path is D:\sample\test. What is the output of the following statement? print('One', 'Two' 'Three') OneTwoThree The ________ built-in function is used to read a number that has been typed on the keyboard. input() What is the output of the following code? val = 123.456789 print(f'{val:.3f}') 123.457 What is the output of the following code? val = 123456.789 print(f'{val:,.2f}') 123,456.79 Which of the following will display 20%? print(f'{20:.0%}') print(f'{0.2:.0%}') print(f'{0.2 * 100:.0%}') print(f'{0.2:%}') print(f'{0.2:.0%}') What symbol is used to mark the beginning and end of a string? a quote mark (") A(n) ________ structure is a logical design that controls the order in which a set of statements execute. control The decision structure that has two possible paths of execution is known as dual alternative Multiple Boolean expressions can be combined by using a logical operator to create ________ expressions. compound When using the ________ logical operator, one or both of the subexpressions must be true for the compound expression to be true. or Which logical operators perform short-circuit evaluation? or, and Which of the following is the correct if clause to determine whether y is in the range 10 through 50, inclusive? if 10 < y or y > 50: if 10 > y and y < 50: if y >= 10 and y <= 50: if y >= 10 or y <= 50: if y >= 10 and y <= 50: A Boolean variable can reference one of two values which are True or False What is the result of the following Boolean expression, given that x = 5, y = 3, and z = 8? x < y or z > x True What is the result of the following Boolean expression, given that x = 5, y = 3, and z = 8? x < y and z > x False What is the result of the following Boolean expression, given that x = 5, y = 3, and z= 8? not (x < y or z > x) and y < z False What does the following expression mean? x <= y x is less than or equal to y Which of the following is the correct if clause to determine whether choice is anything other than 10? if choice != 10: When using the ________ logical operator, both subexpressions must be true for the compound expression to be true. and In Python the ________ symbol is used as the not-equal-to operator. != In Python the ________ symbol is used as the equality operator. == What is a group of statements that exists within a program for the purpose of performing a specific task? a function The first line in a function definition is known as the function header The ________ design technique can be used to break down an algorithm into functions. top-down A set of statements that belong together as a group and contribute to the function definition is known as a block The ________ keyword is ignored by the Python interpreter and can be used as a placeholder for code that will be written later. pass A ________ variable is created inside a function. local A(n) ________ is any piece of data that is passed into a function when the function is called. argument A(n) ________ is a variable that receives an argument that is passed into a function. parameter A ________ variable is accessible to all the functions in a program file. global It is recommended that programmers avoid using ________ variables in a program whenever possible. global The Python library functions that are built into the Python ________ can be used by simply calling the required function. interpreter What type of function can be used to determine whether a number is even or odd? Boolean Which of the following will assign a random integer in the range of 1 through 50 to the variable number? random(1, 50) = number number = random.randint(1, 50) randint(1, 50) = number number = random(range(1, 50)) number = random.randint(1, 50) What will display after the following code is executed? def main( ): print("The answer is" , magic(5)) def magic(num): answer= num + 2*10 return answer if _name_=='_main_': main( ) 25 The Python standard library's ________ module contains numerous functions that can be used in mathematical calculations. math What will be the output after the following code is executed? def pass_it(x,y): z=x+ "," + y return (z) name2= "Julian" name1 = "Smith" fullname = pass_it(name1,name2) print(fullname) Smith, Julian What will be the output after the following code is executed? def pass_it(x,y): z=y**x return (z) num1=3 num2=4 answer=pass_it(num1,num2) print(answer) 64 What will be displayed after the following code is executed? def pass_it(x,y): z=x*y return (z) results=get_result(z) return result def get_result(number): z=number+2 return z num1=3 num2=4 answer = pass_it(num1,num2) print(answer) 14 What type of loop structure repeats the code a specific number of times? count-controlled loop What type of loop structure repeats the code based on the value of Boolean expression? condition-controlled loop What are the values that the variable num contains through the iterations of the following for loop? for num in range(2, 9, 2): 2, 4, 6, 8 What are the values that the variable num contains through the iterations of the following for loop? for num in range(4): 0, 1, 2, 3 Which of the following is NOT an augmented assignment operator? <= A variable used to keep a running total is called a(n) accumulator ________ is the process of inspecting data that has been input into a program in order to ensure that the data is valid before it is used in a computation. Input validation A(n) ________ structure is a structure that causes a statement or a set of statements to execute repeatedly. repetition The first operation is called the ________ and its purpose is to get the first input value that will be tested by the validation loop. priming read When will the following loop terminate? while keep_going != 999: when keep_going refers to a value equal to 999 In Python, a comma-separated sequence of data items that are enclosed in a set of brackets is called list In Python, the variable in the for clause is referred to as the ________ because it is the target of an assignment at the beginning of each loop iteration. target variable Which of the following represents an example to calculate the sum of numbers (that is, an accumulator), given that the number is stored in the variable number and the total is stored in the variable total? total + number = total number += number total += number total = number total += number What will be displayed after the following code is executed? total=0 for count in range(1,4): total+=count print(total) 6 What will be displayed after the following code is executed? total=0 for count in range(4,6): total+=count print(total) 9 What will be displayed after the following code is executed? for num in range(0,20,5): num+=num print(num) 30