We Keep Coding

Rounds integer even with float- python

Below is my code. the issue is in MAIN. The code works as a person trying to buy items into a cart and you can see the total price of those items. They have to enter in the price for each item that they want. If a person inputs a number to two decimal places, it rounds it to the nearest whole number.
import locale
class CashRegister:
def __init__(self):
mself.items = 0
self.price = int(float(0.00))
def addItems(self,price): #keeps track of total number of items in cart
self.price += price
self.items += 1
print(self.price)
def getTotal(self): #returns total price
return self.price
def getCount(self): #return the item count of the cart
return self.items
def clearCart(self): #clears cart for another user or checkout
self.items = 0
self.price = int(float(0.00))
def main():
user_name = input('What is your name?\n') #weclomes user
print("Hello",user_name)
locale.setlocale(locale.LC_ALL, 'en_US')
user_name = CashRegister() #user is using the cash register
while True:
line = input ("Would you like to add another food item to your cart? Choose y or n \n")
if line == "y":
** price = int(float(input("please input the price of the item\n")))
print(price)**
user_name.addItems(price) #user adds prices to cart
elif line == "n":
print("Your total checkout price:", locale.currency(user_name.getTotal()) )
# int(float(locale.currency(user_name.getTotal())))
print("Your total item count", user_name.getCount())
user_name.clearCart() #clears cart for another user/checkout
break
else:
print("Error")
if __name__ == '__main__':
main()
As soon as the person inputs the number, I printed it to see if that's where the problems lies. I'll enter 3.20 but it automatically converts it to 3. I have no idea how to force it to keep those decimals. I even tried printing it with the int/float and it still doesn't work.

The int() function always returns an integer. An integer never has any decimal points. So use only
float(input("please input the price of the item\n"))
instead of
int(float(input("please input the price of the item\n")))

How can i sort user input into a list based on conditionals

So im stuck on a homework problem, and i just need some guidance or criticism if what i have so far is wrong. But the prompt is to "Create a program that will create a clothing object. The clothing object must have the following
attributes: minimum temperature, maximum temperature, and formality level. Once you have created
a list of clothes, enter the current temperature and the formality of the event that you are going to.
Then, output a list of acceptable clothes to wear based upon the formality level."
And heres what i have so far, but i dont know if i cant sort the user input into a list based on my class instances
class Clothing:
def __init__(self, fit: str, mintemp: int, maxtemp: int, formalitylvl: str):
self.fit = fit
self.mintemp = mintemp
self.maxtemp = maxtemp
self.formalitylvl = formalitylvl
if __name__ == '__main__':
listofclothes = []
listofclothes.append(Clothing("coat", 0, 60, "yes"))
listofclothes.append(Clothing("dress", 0, 100, "yes"))
listofclothes.append(Clothing("T-shirt", 40, 100, "no"))
listofclothes.append(Clothing("Hoodie", 0, 60, "no"))
listofclothes.append(Clothing("jean shorts", 60, 100, "no"))
catalog = int(input("please enter the number of clothing pieces you want to catalog: "))
for i in range(catalog):
str("please enter the clothing item: ")
int(input("Please enter the minimmum temp you would wear the item:"))
int(input("Please enter the maximum temp you would wear the item:"))
str(input("Is the item formal: "))

you are on the right track! you should save the input to variables and not reset the input while looping:
type = input(str("please enter the clothing item: "))
min_temp = int(input("Please enter the minimmum temp you would wear the item:"))
max_temp = int(input("Please enter the maximum temp you would wear the item:"))
is_formal = str(input("Is the item formal: "))
Now, loop over the clothes and check which are right:
output_list = []
for item in listofclothes:
if (item.fit == type and item.mintemp == min_temp and item.maxtemp == max_temp and item.formalitylvl == is_formal):
output_list.append(item)
I've removed your catalog range since it is not mentioned in your assignment. Furthermore, it is not what you should loop over. You should loop over the list of clothes!
EDIT: added type for fit since I forgot that clothing part.

User input not saving into inventory list

Basically I am making an app to better assist me at managing my ebay store. I am still very new to programming and OOP. After watching some tutorials I pieced together the following code. Everything so far works pretty well. What I am currently stuck on is when the user inputs an item for inventory, it is not saving it. And, when the user wants to view the inventory the item they added wont populate. Any input or suggestions would be much apprenticed.
def Inventory():
All_Inventory = {}
class Ebay_Inventory:
def __init__(self, manufacturer, object_type, price):
self.manufacturer = manufacturer
self.object_type = object_type
self.price = price
def add_item(self):
manufacturer = input("Enter Manufacturer: ")
object_type = input("Enter what the item is: ")
price = input("Enter price: ")
item_info = Ebay_Inventory(manufacturer, object_type, price)
All_Inventory = item_info
print("Item added successfully")
def delete_item(self):
delete = input("What is the item you want to delete?: ")
if delete in All_Inventory.keys():
del[delete]
print("The item entered has been deleted.")
else:
print("Item not found")
def sale_status(self):
update = input("What is the item you want to update?:")
if update in All_Inventory.keys():
pass
else:
print("Item not found")
user=True
while user:
print("\n1. Add to item inventory")
print("2. Remove item from inventory")
print("3. Update sale status")
print("4. View inventory")
print("5. Exit program")
user_wants=input("What would you like to do today?")
if user_wants=="1":
Ebay_Inventory.add_item(input)
elif user_wants=="2":
Ebay_Inventory.delete_item(input)
elif user_wants=="3":
Ebay_Inventory.sale_status(input)
elif user_wants=="4":
print(All_Inventory)
elif user_wants=="5":
print("\n Thank you for using item inventory.")
break
elif user_wants!="":
print("\n Input not understood. Please try again.")

You need to read about Scope, OOP and dicts:
You are not adding to your Inventory.All_Inventory - you create a new local with All_Inventory = item_info
https://docs.python.org/3/tutorial/classes.html#python-scopes-and-namespaces
Short description of the scoping rules?
You mix up static class attributes and instance attributes, read:
https://docs.python.org/3/tutorial/classes.html#class-objects.
What is the difference between #staticmethod and #classmethod?
You are deleting / accessing your dictionary wrongly - see :
https://docs.python.org/3/tutorial/datastructures.html#dictionaries
Delete an element from a dictionary
Fixed:
class Ebay_Inventory:
Inventory = {} # class property
#staticmethod
def print_inventory():
for k in Ebay_Inventory.Inventory:
for i in Ebay_Inventory.Inventory[k]:
print(k,i)
class Ebay_Item:
def __init__(self, key, manufacturer, object_type, price):
self.manufacturer = manufacturer
self.object_type = object_type
self.price = price
self.key = key
def __str__(self):
return f"{self.manufacturer} {self.object_type} {self.price}"
def __repr__(self):
return str(self)
#staticmethod
def add_item(key=None, man=None, obj=None, pri=None):
# use values if given, else ask - this is for demo purposes only
key = key or input("Enter key: ")
manufacturer = man or input("Enter Manufacturer: ")
object_type = obj or input("Enter what the item is: ")
price = pri or input("Enter price: ")
# create new item
item_info = Ebay_Inventory.Ebay_Item(key, manufacturer, object_type, price)
# add to class member, create key if need be
Ebay_Inventory.Inventory.setdefault(item_info.key,[]).append(item_info)
def delete_item(key=None):
delete = key or input("What is the item you want to delete?: ")
if delete in Ebay_Inventory.Inventory:
del Ebay_Inventory.Inventory[delete]
print("The item entered has been deleted.")
else:
print("Item not found")
def __str__(self):
return Ebay_Inventory.print_inventory()
# add 2 items and print
Ebay_Inventory.add_item(1,"Me","Me",1000)
Ebay_Inventory.add_item(2,"You","You",1000)
Ebay_Inventory.print_inventory()
# remove non existent and existent item and print
Ebay_Inventory.delete_item(3)
Ebay_Inventory.delete_item(2)
Ebay_Inventory.print_inventory()
Output:
1 Me Me 1000
2 You You 1000
Item not found
The item entered has been deleted.
1 Me Me 1000

Sorry to rework your code pretty extensively, but I think this is more like what you are going for:
class EbayInventory:
def __init__(self):
self.all_inventory = []
def print_items(self):
print('Current item list by index:')
for i in range(0, len(self.all_inventory)):
print("{} -> {}".format(i+1, self.all_inventory[i]))
def add_item(self):
manufacturer = input("Enter Manufacturer: ")
object_type = input("Enter what the item is: ")
price = input("Enter price: ")
item = {'manufacturer': manufacturer, 'type': object_type, 'price': price}
self.all_inventory.append(item)
print("Item added successfully")
def delete_item(self):
self.print_items()
delete = int(input("Item id you want to delete: "))
try:
del self.all_inventory[delete - 1]
print("The item entered has been deleted.")
except Exception as e:
print("An error occurred deleting that item, details below")
print(e)
def sale_status(self):
self.print_items()
update_index = int(input("Item id you want to update: "))
if update_index > len(self.all_inventory) or update_index <= 0:
print("You're trying to change an item that doesn't exist!!")
return
print("OK. Let's get that item up to date!")
manufacturer = input("Enter Manufacturer: ")
object_type = input("Enter what the item is: ")
price = input("Enter price: ")
item = {'manufacturer': manufacturer, 'type': object_type, 'price': price}
self.all_inventory[update_index - 1] = item
print("OK. We got that update taken care of")
if __name__ == "__main__":
my_app = EbayInventory()
while True:
print("\n1. Add to item inventory")
print("2. Remove item from inventory")
print("3. Update sale status")
print("4. View inventory")
print("5. Exit program")
user_wants = input("Please enter the number corresponding to how you would like help: ")
if user_wants == "1":
my_app.add_item()
elif user_wants == "2":
my_app.delete_item()
elif user_wants == "3":
my_app.sale_status()
elif user_wants == "4":
my_app.print_items()
elif user_wants == "5":
print("Thank you for using item inventory.")
break
else:
print("Input not understood. Please try again.")
You had a variable user that did nothing. You can simply enter an infinite loop with while True:. If you wanted to loop the way you did, then instead of a break you could have put a user = False to break out of the loop. This is sometimes a nifty trick, but doesn't make sense here I think. It seemed to me the inventory was really the only thing that would benefit by being stored in your class, and the methods could then access it to adjust it via a self.all_inventory. I moved your code to ask for item inputs to the add_item() and sale_status() methods, so now the main block of code looks a lot cleaner. I also wrapped it in if __name__ == "__main__": so that you can import this class to another project without running the entire program! I threw in some basic error checking with try: and except: clauses also. I think you were misunderstanding the difference between a Class and an Instance. So in my code the Class is EbayInventory, but the Instance is my_app. You create instances of your class just like I did with my_app = EbayInventory() and then the self now refers to my_app. In this manner I can call my_app.add_item(). You can have several instances of objects though, and they each have their own space in your computers memory. So you could have said:
app1 = EbayInventory()
app2 = EbayInventory()
app1.add_item()
And only the app1 will have any items, whereas app2 is still an empty list, but still has the methods to build an inventory via app2.add_item(). To answer your main question though, you never call your function Inventory() and therefore it doesn't exist to hold your information. When you call item_info = Ebay_Inventory(manufacturer, object_type, price) in fact you are making an Instance of a class, which is really nonsensical to do here because that means on the next line you could say item_info.add_item() and this would make another instance, yet you are not saving this information anywhere so you can never retrieve it!

str reset to 0 when not asked to?

I am trying to print the total of the shopping list but every time i call on the string it prints 0 instead of what it should be.
cash_due = 0
import pickle
picklee = open('Store_stuff.pickle', 'rb')
contents = pickle.load(picklee)
picklee.close()
shopping_list = ['Name price quantity total']
store_contents ='''Store Contents
Name Price GTIN-8 Code
Butter £1.20 70925647
Chocolate £1.00 11826975
Bread £1.00 59217367
Cheese £2.80 98512508
Bacon £2.40 92647640
Lamb £4.80 49811230
Ham £2.59 53261496
Potatoes £2.00 11356288
Chicken £3.40 89847268
Eggs £1.29 21271243'''
def item(barcode, quantity, cash_due, shopping_list):
shopping_list.append(contents[barcode]['name']+' £'+(str((int(contents[barcode]['price']))/100))+' '+str(quantity)+' £'+str((int(quantity)*int(contents[barcode]['price']))/100))
print(cash_due)
print(contents[barcode]['price'])
print(quantity)
cash_due += ((int(contents[barcode]['price'])*(int(quantity)))/100)
print(cash_due)
def shopkeeper_ui():
print('Welcome to Stanmore\'s Food Emporium! Feel free to browse.')
print(store_contents)
user_input = ''
while user_input != 'finish':
user_input = input('''Welcome to the checkout.
instructions -
if you are entering text make sure your \'CAP\'s Lock\' is turned off
if you are entering a barcode number, please enter it carefully
if you want to print your current recipt, enter \'recipt\'
if you want to see your current total, enter \'total\'
and if you are finished, enter \'finish\'
You can see the stores contents below
Thanks for shopping: ''')
if len(user_input) == 8:
quantity = int(input('Enter the quantity that you want: '))
item(user_input, quantity, cash_due, shopping_list)
elif user_input == 'recipt':
count8 = 0
for i in shopping_list:
print(shopping_list[count8])
count8 += 1
elif user_input == 'finish':
print('Your shopping list is',shopping_list,' \nand your total was', total,'\n Thank you for shopping with Stanmore\'s Food Emporium')
elif user_input == 'total':
print('your total is, £',cash_due)
else:
print('User_input not valid. Try again...')
shopkeeper_ui()
If i enter the code and my first entry is 21271243 (the barcode for eggs). then i enter 4 for the quantity. i can get the shopping_list list to understand the total and if I print the string cash_due from inside the item function it understands it but as soon as i try to call cash_due from the shopkeeper_ui function it prints 0 instead of what should be 5.12?

cash_due is not mutable. Changes in item function are lost when leaving the function.
Generally, the way out of this is to let the function (item) return the value.
In this case, I would just keep cash_due out of item function and let item only return the cost for that item. Something like this:
def item(barcode, quantity, shopping_list):
shopping_list.append(contents[barcode]['name']+' £'+(str((int(contents[barcode]['price']))/100))+' '+str(quantity)+' £'+str((int(quantity)*int(contents[barcode]['price']))/100))
print(contents[barcode]['price'])
print(quantity)
cost = ((int(contents[barcode]['price'])*(int(quantity)))/100)
print(cost)
return cost
[...]
if len(user_input) == 8:
quantity = int(input('Enter the quantity that you want: '))
cash_due += item(user_input, quantity, shopping_list)
You don't have the same issue with shopping_list because it is a mutable: it is changed in place. Read about mutables to understand the concept.
However, it could be better design to not let item modify the list. It could just return both the list element and the cost, and the caller would modify the list.
def item(barcode, quantity):
stuff = (contents[barcode]['name']+' £'+(str((int(contents[barcode]['price']))/100))+' '+str(quantity)+' £'+str((int(quantity)*int(contents[barcode]['price']))/100))
cost = ((int(contents[barcode]['price'])*(int(quantity)))/100)
return stuff, cost
[...]
if len(user_input) == 8:
quantity = int(input('Enter the quantity that you want: '))
stuff, cost = item(user_input, quantity, shopping_list)
shopping_list.append(stuff)
cash_due += cost

NameError: Global Name not defined

my python code keeps getting nameerror, global variable not defined on ticketSold. I am not sure how to fix this, as I did define it as a global variable. Any help is appreciated.
aLimit=300
bLimit=500
cLimit=100
aPrice=20
bPrice=15
cPrice=10
def Main():
global ticketSold
getTickets(aLimit)
sectionIncome=calcIncome(ticketSold,aPrice)
SectionIncome+=totalIncome
print("The theater generated this much money from section A "+str(sectionIncome))
getTickets(bLimit)
sectionIncome=calcIncome(ticketSold,bPrice)
SectionIncome+=totalIncome
print("The theater generated this much money from section B "+str(sectionIncome))
getTickets(cLimit)
sectionIncome=calcIncome(ticketSold,cPrice)
sectionIncome+=totalIncome
print("The theater generated this much money from section C "+str(sectionIncome))
print("The Theater generated "+str(totalIncome)+" total in ticket sales.")
def getTickets(limit):
ticketSold=int(input("How many tickets were sold? "))
if (ticketsValid(ticketSold,limit)==True):
return ticketSold
else:
getTickets(limit)
def ticketsValid(ticketSold,limit):
while (ticketSold>limit or ticketSold<0):
print ("ERROR: There must be tickets less than "+str(limit)+" and more than 0")
return False
return True
def calcIncome(ticketSold,price):
return ticketSold*price

Saying global varname does not magically create varname for you. You have to declare ticketSold in the global namespace, for example after cPrice=10. global only makes sure that when you say ticketSold, you're using the global variable named ticketSold and not a local variable by that same name.

Here is a version which:
is Python 2 / 3 compatible
does not use any global variables
is easily extended to any number of sections
demonstrates some benefits of OOP (as opposed to a proliferation of named variables: aLimit, bLimit, etc - what will you do when you reach 27 sections?)
And so:
import sys
if sys.hexversion < 0x3000000:
# Python 2.x
inp = raw_input
else:
# Python 3.x
inp = input
def get_int(prompt):
while True:
try:
return int(inp(prompt))
except ValueError: # could not convert to int
pass
class Section:
def __init__(self, name, seats, price, sold):
self.name = name
self.seats = seats
self.price = price
self.sold = sold
def empty_seats(self):
return self.seats - self.sold
def gross_income(self):
return self.sold * self.price
def sell(self, seats):
if 0 <= seats <= self.empty_seats():
self.sold += seats
else:
raise ValueError("Cannot sell {} seats, only {} are available".format(seats, self.empty_seats))
def main():
# create the available sections
sections = [
Section("Loge", 300, 20., 0),
Section("Floor", 500, 15., 0),
Section("Wings", 100, 10., 0)
]
# get section seat sales
for section in sections:
prompt = "\nHow many seats were sold in the {} Section? ".format(section.name)
while True:
# prompt repeatedly until a valid number of seats is sold
try:
section.sell(get_int(prompt))
break
except ValueError as v:
print(v)
# report section earnings
print("The theatre earned ${:0.2f} from the {} Section".format(section.gross_income(), section.name))
# report total earnings
total_earnings = sum(section.gross_income() for section in sections)
print("\nTotal income was ${:0.2f} on ticket sales.".format(total_earnings))
if __name__=="__main__":
main()
which gives us
How many seats were sold in the Loge Section? 300
The theatre earned $6000.00 from the Loge Section
How many seats were sold in the Floor Section? 300
The theatre earned $4500.00 from the Floor Section
How many seats were sold in the Wings Section? 100
The theatre earned $1000.00 from the Wings Section
Total income was $11500.00 on ticket sales.