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Start your free trialMaximilian Hill
Python Development Techdegree Graduate 7,661 PointsUnit Project 4: Wrong number of product Id's
I am reading the CSV file using dict reader, but I am getting the wrong number of product Id's, 83 instead of 26. I am assuming it's somewhere in my add_csv function, probably a loop, but I need help with it. Can anyone let me know where I am making the mistake.
Here is my app file:
from models import (Base, session, Product, engine)
import datetime
import csv
import time
def menu():
choice =input('''
\n***** Main Menu *****
\rPlease make a selection
\rPress 'v' View details
\rPress 'a' to add item
\rpress 'b' to make a back up of all contets
\rPress 'e' to exit
\r
\rMake your selection: ''')
if choice in ['v', 'a', 'b', 'e' ]:
return choice
def clean_date(date_str):
try:
date_object = datetime.datetime.strptime(date_str, "%m/%d/%Y")
format_date =date_object.strftime("%Y-%m-%d")
return_date = datetime.datetime.strptime(format_date, '%Y-%m-%d').date()
except ValueError:
input( '''
\n******** DATE ERROR *********
\rThe Date format should inlcude a valid Month Day, Year from the past
\rExample: January 13, 2003
\rPress ENTER to try again
\r*********************************
\r''')
return
else:
return return_date
def clean_price(price_str):
cleaned_price = float(price_str.strip("$"))
cleaned_price = float(cleaned_price)
cleaned_price = int(cleaned_price * 100)
return cleaned_price
def clean_id(id_str, options):
try:
book_id = int(id_str)
except:
input( f'''
\n******** Id ERROR *********
\rId must be a number.
\rPress ENTER to try again
\r***************************''')
return
else:
if book_id in options:
return book_id
else:
input( '''
\n******** Id ERROR *********
\r Options are: {my_options}.
\rPress ENTER to try again
\r***************************''')
def add_csv():
with open('inventory.csv') as csvfile:
data = csv.DictReader(csvfile)
new_data =[]
for row in data:
clean_rows = {}
clean_rows['product_name'] = row['product_name']
prices = row.get('product_price', 'N/A')
prices = clean_price(prices)
clean_rows['product_price'] = prices
quants = row['product_quantity']
quants = int(quants)
clean_rows['product_quantity'] = quants
dates = row.get('date_updated', 'N/A')
dates = clean_date(dates)
clean_rows['date_updated'] = dates
new_data.append(clean_rows)
for item in new_data:
product = Product(**item)
session.add(product)
session.commit
def app():
add_csv()
app_running = True
while app_running:
choice = menu()
if choice == 'v':
id_options = []
for item in session.query(Product):
id_options.append(item.product_id)
id_error = True
while id_error:
pick_id = input(f'''
\nId options = {id_options}
\rMake your selection: ''')
pick_id = clean_id(pick_id, id_options)
if type(pick_id) == int:
id_error = False
the_product = session.query(Product).filter(Product.product_id == pick_id).first()
print(f'''
\nProduct name: {the_product.product_name}
\rProduct Price: ${(the_product.product_price) / 100}
\rStock: {the_product.product_quantity}
\rStock updated on: {(the_product.date_updated)}
\r''')
input('Press ENTER to continue')
elif choice == 'a':
pass
elif choice == 'b':
pass
else:
print("Inventory Closing: Goodbye!")
app_running = False
if __name__ == "__main__":
Base.metadata.create_all(engine)
add_csv()
for item in session.query(Product):
print(item.product_id)
Here is my model file:
from sqlalchemy import (create_engine, Column,
String, Integer, Date)
from sqlalchemy.ext.declarative import declarative_base
from sqlalchemy.orm import sessionmaker
engine = create_engine('sqlite:///inventory.db.', echo = False)
Session = sessionmaker(bind = engine)
session = Session()
Base = declarative_base()
class Product(Base):
__tablename__ = 'Products'
product_id = Column(Integer, primary_key= True)
product_name = Column('Name',String )
product_price = Column('Price', Integer)
product_quantity = Column('Quantity', Integer)
date_updated = Column('Date Updated', Date)
def __repr__(self):
return (f'Name: {self.product_name} Quantity: {self.product_quantity} Price:{self.product_price} Date Updated: {self.date_updated}')
1 Answer
Jeff Muday
Treehouse Moderator 28,720 PointsI don't know the exact nature of your program.
Perhaps you added your data multiple times (during multiple runs) rather than starting with a "clean" database?