Question

4.8.4 Better Sum

Answer 1

import sys

x = input("enter number 1: ") #ask for user input

y = input("enter number 2: ")

output = "" #the output string

try: #try integering them (this also has error message and will check if input is valid)

x = int(x)

except:

print("error! number 1 was not a number :(")

sys.exit() #leave

try:

y = int(y)

except:

print("error! number 2 was not a number :(")

sys.exit()

if x == y: #check they are not the same

print("both numbers are the same")

else: #do the thing

if y > x: #otherwise swap the order

for i in range (x, y + 1): #+1 for inclusive

output = (output + str(i) + " ")

else:

for i in range (y, x + 1):

output = (output + str(i) + " ")

print(output) #so it's all in one line