#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""
Created on Sun Oct 16 16:33:31 2022

@author: cpresser
"""




"""
Compute Shipping: shipping.py
Write a function called shippingCost which takes as an argumaent a package 
weight in pounds and returns the cost to ship it. The shipping rates are as 
follows:
    
Weight (lbs)      Cost per pound ($)
less than 1               3.99
1 to 2                    4.99
2 to 4                    5.99
4 to 8                    6.99
more than 8               7.99

Outside of the function, ask the user for a package weight and print its cost.

Sample Run:
Weight in pounds? 2.45
The package will cost $14.68 to ship.

"""

#define the function before we try to use it
def shippingCost(w):
    #assign our cost an initial value
    cost = 0
    if w < 1:
        cost = 3.99
    elif w < 2:        # because of the if, this is the same as  1 <= w < 2
        cost = 4.99
    elif w < 4:        #  2 <= w < 4
        cost = 5.99
    elif w < 8:        #  4 <= w < 8
        cost = 6.99
    else:              #  w >= 8
        cost = 7.99
    return cost * w 
# end of the function        

#Another equuivalent function
def shippingCost2(w):
    if w < 1:
        return w * 3.99
    elif w < 2:        # because of the if, this is the same as  1 <= w < 2
        return w * 4.99
    elif w < 4:        #  2 <= w < 4
        return w * 5.99
    elif w < 8:        #  4 <= w < 8
        return w * 6.99
    else:              #  w >= 8
        return w * 7.99
# end of the function        


# This is the main part of the program. 
# This will run first, calling the functions

weight = float(input("Weight in pounds? "))
total_cost = shippingCost(weight)

print(f"The package will cost ${total_cost:.2f} to ship.")