How to have a new list for every input

Question

I am trying to edit the input entered for each day. I have created an input_sales_day function that contains a number of products to enter for a day, an input_sales function that takes the number of products and days as parameters, where I think the problem lies, and a final function that just prints. I’ve tried using split, but I always get the error or just print each word instead.

Here is the code, it prints:

Product name: z1
quantity sold : 1
Product Name: z1
quantity sold : 1
Product name : z2
quantity sold : 2
Product Name: z2
quantity sold : 2
Product name : z3
quantity sold : 3
Product Name: z3
quantity sold: 3
Day 1 : ['1 z1', '1 z1']
Day 2 : ['1 z1', '1 z1', '2 z2', '2 z2']
Day 3: ['1 z1', '1 z1', '2 z2', '2 z2', '3 z3', '3 z3']

I try to print:

Day 1: ['1 z1', '1 z1']
Day 2 : ['2 z2', '2 z2']
Day 3 : ['3 z3', '3 z3']

p = []
def input_sales_day(nbp):
    for i in range(nbp):
        np = input("Product Name: ")
        qv = input("quantity sold : ")
        p.append('{} {}'.format(qv, np))
    return p

def input_sales(nbp, d):
    sl = []
    for j in range(d):
        n = input_sales_day(nbp)
        sl.append('day {} : {}'.format(j+1, n))
    return sl

def print_sales(sl):
    return 'n'.join(sl)

print(print_sales(input_sales(2, 3)))

Asked By: Yao Min

||

Source

Answer 1

All you need to do is make p a local variable of the input_sales_day function. If you do this, then p will be reset on every invokation. Like this:

def input_sales_day(nbp):
    p = []
    for i in range(nbp):
        np = input("Product Name: ")
        qv = input("quantity sold : ")
        p.append('{} {}'.format(qv, np))
    return p


def input_sales(nbp, d):
    sl = []
    for j in range(d):
        n = input_sales_day(nbp)
        sl.append('day {} : {}'.format(j+1, n))
    return sl


def print_sales(sl):
    return 'n'.join(sl)


print(print_sales(input_sales(2, 3)))

Answered By: Michael M.

Answer 2

You dont delete the old values from the p list, so when you go for the next day, the data from the previous day is still in the list, you have to change the way to print it or delete it every day.

Answered By: Alvaro Suarez Menendez

How to have a new list for every input

Question:

Answers: