Help!! Please

[leokraz]

I apologize, after messing around a little with the code I got it to work the only problem now is that. My code is displaying both results. Standard Shipping and Express shipping at the same time. What am I doing wrong?

 
print ("Welcome to Delivery Express please enter S for Standard shipping or E for Express")
shipping_option = input("Delivery Option:")
shipping_option = shipping_option.upper()
if shipping_option == "S" or "E":
        pounds = float(input("Please Enter Weight:"))
if pounds <= 4:
    pounds = pounds * 1.05
    print (pounds)
elif pounds == 5 or pounds == 7 or pounds == 8:
    pounds = pounds * 0.95
    print (pounds)
elif pounds ==  9 or pounds == 10 or pounds == 11 or pounds == 12 or pounds ==13 or pounds == 14 or pounds ==15:
    pounds = pounds * 0.85
    print (pounds)
elif pounds >= 16:
    pounds = pounds * 0.80
    print (pounds)
else:
    if shipping_option == "S" or "E":
        pounds = float(input("Please Enter Weight:"))
if pounds <= 2:
        pounds = pounds * 3.25
        print(pounds)
elif pounds == 3 or pounds == 4 or pounds == 5:
        pounds = pounds * 2.95
        print(pounds)
elif pounds == 6 or pounds == 7 or pounds == 8 or pounds == 9 or pounds == 10:
        pounds = pounds * 2.75
        print(pounds)
elif pounds >= 11:
        pounds = pounds * 2.55
        print(pounds)