Chapter 3 Fundamentals Of Phython Lambert Flashcards ionicons-v5-c

How many times does a loop with the header for count in range (10): execute the statements in its body?

10 times

A for loop is convenient for

running a set of statements a predictable number of times

What is the output of the loop for count in range(5): print(count, end = " ")?

0 1 2 3 4

When the function range receives two arguments, what does the second argument specify?

The last value of a sequence of integers plus 1

Consider the following code segment: x = 5 y = 4 if x > y: print( y ) else: print( x )What value does this code segment print?

4

A Boolean expression using the and operator returns True when

both operands are true.

By default, the while loop is an

entry-controlled loop.

Consider the following code segment: count = 5 while count > 1: print(count, end = " ") count -= 1 What is the output produced by this code?

5 4 3 2 1

Consider the following code segment: count = 1 while count <= 10: print(count, end = " ") Which of the following describes the error in this code?

The loop is infinite.

Consider the following code segment: theSum = 0.0 while True: number = input("Enter a number: ") if number == "": break theSum += float(number) How many iterations does this loop perform?

At least one

Modify the guessing-game program of Section 3.5 so that the user thinks of a number that the computer must guess. The computer must make no more than the minimum number of guesses, and it must prevent the user from cheating by entering misleading hints. (Hint: Use the math.log function to compute the minimum number of guesses needed after the lower and upper bounds are entered.)

import mathsmaller = int(input("Enter the smaller number: "))larger = int(input("Enter the larger number: "))count = 0maxGuesses = round(math.log(larger - smaller + 1, 2))while True: count += 1 print(smaller, larger) yourNumber = (smaller + larger) // 2 print("Your number is", yourNumber) answer = input("Enter =, <, or >: ") if answer == "=": print("Hooray, I've got it in", count, "tries!") break elif count == maxGuesses: print("I'm out of guesses, and you cheated!") break elif answer == "<": larger = yourNumber - 1 else: smaller = yourNumber + 1

Write a program that receives a series of numbers from the user and allows the user to press the enter key to indicate that he or she is finished providing inputs. After the user presses the enter key, the program should print the sum of the numbers and their average.

count = 0theSum = 0.0data = input("Enter a number or just enter to quit: ")while data != "": number = float(data) theSum += number count += 1 data = input("Enter a number or just enter to quit: ")print("The sum is", theSum)average = (theSum / count)print("The average is,", average)