RLayton Ch7 Ex2 | Python Fiddle

#Theater Seating Revenue
#by Robert Layton

SECTION_A_PRICE = 20
SECTION_B_PRICE = 15
SECTION_C_PRICE = 10

SECTION_A_SEATS = 300
SECTION_B_SEATS = 500
SECTION_C_SEATS = 200

section_a_sold = 0
section_b_sold = 0
section_c_sold = 0

#Welcome user
print '\nWelcome to the ticket review program.'

#GET SECTION A SALES
section_a_sold = input("\nEnter the number of tickets sold in Section A: ")
while(section_a_sold < 0 or section_a_sold > SECTION_A_SEATS):
    print("\nThe number of tickets sold is invalid.")
    section_a_sold = input("\nEnter the number of tickets sold in Section A: ")
    
#GET SECTION B SALES
section_b_sold = input("\nEnter the number of tickets sold in Section B: ")
while(section_b_sold < 0 or section_b_sold > SECTION_B_SEATS):
    print("\nThe number of tickets sold is invalid.")
    section_b_sold = input("\nEnter the number of tickets sold in Section B: ")
    
#GET SECTION C SALES
section_c_sold = input("\nEnter the number of tickets sold in Section C: ")
while(section_c_sold < 0 or section_c_sold > SECTION_C_SEATS):
    print("\nThe number of tickets sold is invalid.")
    section_c_sold = input("\nEnter the number of tickets sold in Section C: ")
    
    
#Calculate total revenue    
totalTicketSales = 0
totalTicketSales += section_a_sold*SECTION_A_PRICE
totalTicketSales += section_b_sold*SECTION_B_PRICE
totalTicketSales += section_c_sold*SECTION_C_PRICE

print '\n\nThe total revenue from ticket sales is: $' + str(totalTicketSales)

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