CODEWITHSUNDEEP
pythonlistpython-3.xnested-lists
Devon
Devon

Reputation: 9

Combine tuple and list into list-of-lists

I'm very new to programming and trying to combine a list and tuple into a new list:

I'd be very grateful for a simple solution and also a brief explanation why my attempt only returns a value for cloth (I entered range 0:5 but it seems just to return element 4, cloth and its price)

import random

goods = ("Silk", "Gems", "Wool", "Hide", "Cloth", "Iron")

def set_prices ():

    price_s = random.randrange(180,300)
    price_g = random.randrange(250,800)
    price_w = random.randrange(1,5)
    price_h = random.randrange(5,18)
    price_c = random.randrange(20,50)
    price_i = random.randrange(50,150)

    prices = [price_s,price_g,price_w,price_h,price_c,price_i]

    for n in range (0,5):
        offer = [(goods[n],prices[n])] 
        print (offer)

set_prices()

Upvotes: 0

Views: 85

Answers (1)

Trelzevir
Trelzevir

Reputation: 765

The problem is that range(0,5) will only produce 0,1,2,3,4, as the 5 is excluded. An easy solution is to use range(len(goods)), to produce a range with the same number of values of goods:

for n in range(len(goods)):
    ...

Alternatively, you could use zip to iterate through both lists simultaneously:

for offer in zip(goods,prices):
    print(offer)

This produces output as a tuple:

('Silk', 276)
('Gems', 486)
...

but can be converted to a list with list(offer):

['Silk', 188]
['Gems', 620]
['Wool', 2]
['Hide', 14]
['Cloth', 38]
['Iron', 130]

Upvotes: 2

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