Python Final Exam ALL ANSWERS 100% CORRECT LATEST SOLUTION

Python Final Exam ALL ANSWERS 100% CORRECT LATEST SOLUTION Who developed the Python programming language? - Guido van Rossum T/F: Python is a general-purpose programming language, appropriate for solving problems in many areas of computing. - True (You might use Python for web development, business applications, and artificial intelligence, among many others.) T/F: The Python programming language was so named after a snake was discovered in the creator's office. - False T/F: Python 3 is backwards compatible to Python 2. - False Python embodies elements of which programming paradigm? - Procedural programming Object-oriented programming Functional programming Which of the following is NOT a principle embraced by the Python programming language? - Verbose is better than succinct Thonny is best described as which of the following? - Integrated Development Environment (IDE) T/F: The output of a Python program run in Thonny appears in the shell window. - True T/F: Thonny displays code using syntax highlighting. - True T/F: Running a program that contains errors will cause the Thonny development environment to terminate. - True T/F: The Thonny debugger lets you trace the value of variables while your program is executing. - True T/F: A Python program must be enclosed in curly braces { } to be executed. - False Which of the following statements is true? - The print statement is a call to a function T/F: A Python program must compiled into an executable form before it can be run. - False What is syntax coloring? - Showing certain elements of a program code in different colors What does the term case sensitive mean? - The difference between uppercase and lowercase letters matters What output does the following code produce? print('apple', 'banana') - apple banana What output is produced by the following code? print(15 + 30) - 45 What output does the following code produce? print('Ready', end=' ') print('Set', end='') print('Go') - Ready SetGo What output is produced by the following code? print('Jan', 'Feb', 'Mar', sep='-') - Jan-Feb-Mar What output is produced by the following code? print('oak', 'elm', 'pine', end='!', sep='#') - oak#elm#pine! T/F: Python variables are created using an assignment statement. - True T/F: The value of a variable can change throughout a program. - True Which of the following is NOT a valid Python identifier? - 1stPlace Which of the following identifiers follows the convention for naming Python variables? - total_value T/F: In dynamically typed languages, variables are declared to store a specific type of data. - False T/F: Python variables that represent integers are NOT object reference variables. - False T/F: The assignment operator has higher precedence than the arithmetic operators. - False What value is assigned to the variable num by the following statement if the current value of num is 4? num = num * 2 - 8 T/F: The value assigned to a variable must be numeric. - False In Python, the assignment statement is also an expression. - False The value assigned to a variable could be a floating point number. - True T/F: Python comments begin with a hash mark (#) and extend to the end of the line. - True T/F: A comment in a Python program is ignored by the interpreter. - True T/F: A Python comment cannot appear on a line that contains an executable statement. - False (helps explain it) T/F: A Python block comment begins with a double slash (//). - False (starts with #) What is a docstring? - A character string used as a comment in a program T/F: If either or both operands to the division operator (//) are floating-point values, then the result will be a floating-point value. - True T/F: If both operands to the remainder operator (%) are positive, a divisor of n will produce a result in the range 1 to n. - False (produce a range 0 to n-1) T/F: The math module contains a constant that represents the value pi to several digits. - True What is the result of the expression 7 // 2? - 3 What is the result of the expression 43 % 5 - 3 If the variable num contains a positive integer, what are the only two possible results of the expression num % 2? - 0 and 1 Suppose the integer variable hours contains a value that represents a number of hours. Which of the following expressions will compute how many 24-hour periods are represented by that value, without worrying about any leftover hours. - hours // 24 What is the Python Standard Library? - A collection of programming components that can be used in any python program T/F: Using components from the Python Standard Library is a rare occurrence. - False T/F: Built-in functions of the Python Standard Library can be used without being imported. - True T/F: Full documentation about the Python Standard Library can be found online. - True T/F: All mathematical functions in Python are part of the math module. - False (several built-in functions) T/F: The constant represents pi to 15 decimal places. - True What is the result of the expression max(6, 17) - 17 What is the result of the expression (3, 3) - 27 What is the result of the expression (12.843) - 12 Why don't we use natural languages (like English) to program a computer? - Natural languages are semantically ambiguous (have more than one meaning) What is the syntax of a language? - The rules that determine how words and symbols can be combined. T/F: In a programming language, a syntactically valid statement has only one meaning. - True T/F: A program that runs without generating a runtime error will produce correct results. - False Which of the following would cause a syntax error? - Mispelling a word Which of the following would cause a runtime error? - Diving by 0 Computing the wrong answer is an example of what kind of error? - Logic error Debugging is the process of: - Finding the root cause of an error and fixing it. If the current value of the variable num is 4, what value will be stored in num after the following line of code is executed? num += 2 - 6 If the current value of the variable size is 2, what value will be stored in size after the following line of code is executed? size *= 3 - 6 If the current value of the variable count is 2, what value will be stored in count after the following line of code is executed? count += count * 3 - 8 If the current value of the variable num1 is 2 and the current value of the variable num2 is 3, what value will be stored in num2 after the following line of code is executed? num2 /= num1 * num2 - 0.5 Which line of code is equivalent to the following? depth += 50 * offset - depth = depth + (50 * offset) T/F: The Python turtle graphics module is based on the programming language Logo developed in the 1960s. - True If the turtle is currently facing up (north), which way would it be facing after executing the command (45)? - up and right (northeast) T/F: The pen color and size determines the color and width of the lines drawn. - True T/F: The effect of the setheading depends on the current heading of the turtle. - False Which way would the turtle be facing after executing the command ading(135)? - up and left (northwest) Which way would the turtle be facing after executing the following code? ading(270) (20) (65) - down and right (southeast) T/F: The position of a circle depends on the current heading of the turtle. - True T/F: The turtle circle command can be used to draw a regular polygon. - True T/F: The origin point (0, 0) of the turtle coordinate system is in the upper left corner of the graphic screen. - False T/F: The goto command moves the turtle without drawing a line. - False T/F: A turtle draws a filled circle using the fill_circle command. - False (no such command) T/F: The stroke color of a filled turtle shape must be the same as the fill color. - False T/F: If a filled shape drawn by a turtle is not fully enclosed, Python fills the shape as if the starting point is connected to the end point. - True T/F: Setting the turtle's speed to 0 turns off the animation of the turtle movement completely. - True Which of the following does the input function NOT do when it is called? - Convert the user input to an integer. What is text that requests user input called? - prompt T/F: The input function always returns the read data as a character string. - True T/F: The input, int, and float functions are all built-in functions. - True T/F: The input function will produce an error if the value read is not numeric. - False (wil produce error if int or float used) What operator is used to perform string concatenation in Python? - +