Module 3 Graded Assessment : Crash course Python

answersweek3.py

#Fill in the blanks of this code to print out the numbers 1 through 7.

number = 1
while number <= 7:
	print(number, end=" ")
	number += 1
	
#The show_letters function should print out each letter of a word on a separate line. Fill in the blanks to make that happen.

def show_letters(word):
	for i in word:
		print(i)

show_letters("Hello")
# Should print one line per letter

#Complete the function digits(n) that returns how many digits the number has. 
#For example: 25 has 2 digits and 144 has 3 digits. 
#Tip: you can figure out the digits of a number by dividing it by 10 once per digit until there are no digits left.

def digits(n):
	count = 0
	if n == 0:
	  return 1
	while (n > 0):
		count += 1
		n=n//10
	return count
	
print(digits(25))   # Should print 2
print(digits(144))  # Should print 3
print(digits(1000)) # Should print 4
print(digits(0))    # Should print 1

# This function prints out a multiplication table (where each number is the result of multiplying the 
# first number of its row by the number at the top of its column). Fill in the blanks so that calling
# multiplication_table(1, 3) will print out:
# 1 2 3 
# 2 4 6 
# 3 6 9 

def multiplication_table(start, stop):
	for x in range(start, stop+1):
		for y in range(start, stop+1):
			print(str(x*y), end=" ")
		print()

# The counter function counts down from start to stop when start is bigger than stop, 
# and counts up from start to stop otherwise. Fill in the blanks to make this work correctly.

def counter(start, stop):
    x = start
    if start > stop:
        return_string = "Counting down: "
        while x >= stop:
            return_string += str(x)
            x = x-1
            if start != stop:
                return_string += ","
    else:
        return_string = "Counting up: "
        while x <= stop:
            return_string += str(x)
            x = x + 1
            if start != stop:
                return_string += ","
    return return_string.rstrip(',')
    
print(counter(1, 10)) # Should be "Counting up: 1,2,3,4,5,6,7,8,9,10"
print(counter(2, 1)) # Should be "Counting down: 2,1"
print(counter(5, 5)) # Should be "Counting up: 5"

# The even_numbers function returns a space-separated string of all positive numbers that are divisible by 2, 
# up to and including the maximum that's passed into the function. For example, even_numbers(6) returns “2 4 6”. 
# Fill in the blank to make this work.

def even_numbers(maximum):
	return_string = ""
	for x in range(1, maximum+1):
		num = x%2
		if num == 0:
			return_string += str(x) + " "
	return return_string.strip()

print(even_numbers(6))  # Should be 2 4 6
print(even_numbers(10)) # Should be 2 4 6 8 10
print(even_numbers(1))  # No numbers displayed
print(even_numbers(3))  # Should be 2
print(even_numbers(0))  # No numbers displayed