Gwith

'''
Goal:
Say you have a list value like this:

spam = ['apples', 'bananas', 'tofu', 'cats']
Write a function that takes a list value as an argument and returns a string with all the items separated by a comma 
and a space, with and inserted before the last item. For example, passing the previous spam list to the function would 
return 'apples, bananas, tofu, and cats'. But your function should be able to work with any list value passed to it.
'''

Gwith

spam = ['apples', 'bananas', 'tofu', 'cats']

def comma(a_list):
    last = a_list[:-1]
    all_but_last = a_list[0:-1]
    result = ''
    for item in all_but_last:
        result += item
        result += ','

Gwith

spam = ['apples', 'bananas', 'tofu', 'cats']

def comma(a_list):
    last = a_list[-1]
    all_but_last = a_list[0:-1]
    result = ''
    for item in all_but_last:
        result += item
        result += ', '
    result += 'and '

Gwith

spam = ['apples', 'bananas', 'tofu', 'cats']

def comma(a_list):
    last = a_list[-1]
    all_but_last = a_list[0:-1]
    result = ''
    for item in all_but_last:
        result += item
        result += ', '
    result += 'and '

Gwith

def comma(a_list):
	last = a_list[-1]
	all_but_last = a_list[0:-1]
	new_all_but_last = ', '.join(all_but_last)
	print(new_all_but_last + ', ' + 'and' + ' ' + last)

comma(spam)

Gwith

grid = [['.', '.', '.', '.', '.', '.'],
        ['.', 'O', 'O', '.', '.', '.'],
        ['O', 'O', 'O', 'O', '.', '.'],
        ['O', 'O', 'O', 'O', 'O', '.'],
        ['.', 'O', 'O', 'O', 'O', 'O'],
        ['O', 'O', 'O', 'O', 'O', '.'],
        ['O', 'O', 'O', 'O', '.', '.'],
        ['.', 'O', 'O', '.', '.', '.'],
        ['.', '.', '.', '.', '.', '.']]

Gwith

grid = [['.', '.', '.', '.', '.', '.'],
        ['.', 'O', 'O', '.', '.', '.'],
        ['O', 'O', 'O', 'O', '.', '.'],
        ['O', 'O', 'O', 'O', 'O', '.'],
        ['.', 'O', 'O', 'O', 'O', 'O'],
        ['O', 'O', 'O', 'O', 'O', '.'],
        ['O', 'O', 'O', 'O', '.', '.'],
        ['.', 'O', 'O', '.', '.', '.'],
        ['.', '.', '.', '.', '.', '.']]

Gwith

spam = ['apples', 'bananas', 'tofu', 'cats']

def pretty_join(words):
    if len(words) == 1:
        return words[0]
    else:
        comma_separated = ", ".join(words[:-1])
        last_word = words[-1]
        return "{0}, and {1}".format(comma_separated, last_word)

Gwith

stuff = {'rope': 1, 'torch': 6, 'gold coin': 42, 'dagger': 1, 'arrow': 12}

def displayInventory(inventory):
    print("Inventory:")
    item_total = 0
    for k, v in inventory.items():
        print(v, k)
    print("Total number of items: " + str(item_total))

displayInventory(stuff)

Gwith

import math

def displayInventory(inventory):
    print('Inventory')
    for k, v in inventory.items():
        print(v, k)
    print('Total number of items:' + ' ' + str(sum(inventory.values())))


def addToInventory(inventory, addedItems):