A Shamelessly Simple E-Restaurant Order

Shopify gets your restaurant online fast. So you can keep cooking without sacrificing what matters.

To get started, a shamelessly simple open-source Python implementation of the above restaurant online order system is discussed.

The simplest restaurant online order system using Python functions is described as follows:

Check input numeric validation

def numeric_validation(value):
“”””
This function take an input as interger
and validate that it takes onlu numeric data.
“””
while True:
try:
val = int(input(value))
except:
print(‘Please use numeric digits.’)
continue
if val < 0:
print(‘Please enter a positive number.’)
continue
else:
break
return val

Add Order items

def order_items(orders):
order_items.total_price = 0
run = True
while run:
orderList = orders
items = numeric_validation(“Enter Item No:”)
if (items in orderList):
print(“Already ordered!!! Try Somthing New”)
continue
else:
items_no = int(items)
qty = numeric_validation(“Quantity:”)
order_items.total_price += (menue[items_no][‘price’] * qty)
orderList.append(menue[items_no][‘item’])
order = input(“Do you want to order more? y/n:”)
if order == ‘y’:
continue
else:
run = False
return order_items

Let’s start main function

print(“#”30+”\n Welcome To DigHiSci Cafe\n”+”#”30+ \
“\nPlease Chose your Order Number:”)

Declare Variables

menue = { 1:{“item”:”tea”,”price”:1},
2:{“item”:”coffee”,”price”:2},
3:{“item”:”sandwich”,”price”:4},
4:{“item”:”salad”,”price”:6}
}

orders = [] # issue it has to be a dictionary not a list
qty= 1

Show menu

for item,value in menue.items():
print(“No#”,item,”: Item: “,value[“item”].title(),”- Price:”+str(value[“price”])+”$”)
print(‘#’*30)

Add item

order_items(orders)
print(‘#’*30)

Show card list

print(“You ordered the following Items: “)
for i in range(len(orders)):
print(str(i+1)+”- “+orders[i].title())
print(“-“*30+”\nYour Total Price: “+str(order_items.total_price)+”$”)

End

print(‘#’*30+”\nGreat Thanks! Order Again.\n”)

Here is the result:

##############################
    Welcome To DigHiSci Cafe
##############################
Please Chose your Order Number:
No# 1 : Item:  Tea - Price:1$
No# 2 : Item:  Coffee - Price:2$
No# 3 : Item:  Sandwich - Price:4$
No# 4 : Item:  Salad - Price:5$
##############################
Enter Item No:1
Quantity:1
Do you want to order more? y/n:y
Enter Item No:2
Quantity:1
Do you want to order more? y/n:y
Enter Item No:3
Quantity:1
Do you want to order more? y/n:y
Enter Item No:4
Quantity:1
Do you want to order more? y/n:n
##############################
You have ordered the following Items: 
1- Tea
2- Coffee
3- Sandwich
4- Salad
------------------------------
Your Total Price: 12$
##############################
Great Thanks! Order Again.

Voilà!

Bon appétit!