问题
I am at the beginning of learning Python trying to learn
The concept of the program is an "Application" for a coffee shop to take orders
This is the CSV import
import uuid # GET A RANDOM ID FOR THE CUSTOMER
from datetime import date # GET CURRENT DATE
from csv import DictWriter
file = open('CustomerNames.txt', 'w')
file1 = open('Orders_Per_Users.txt', 'a')
file2 = open('data_entered.csv', 'a')
x = -1
in_list = -1
length = 0
Total_Amount = 0.0
Customer_List = []
Address_List = []
Today_Key = date.toordinal(date.today())
Today_Date = date.today()
Print_Today = Today_Date
Customers = {}
Dates = {}
FirstEmployeeAccountUsername = "coffee1"
FirstEmployeeAccountPassword = "coffeeshop1"
SecondEmployeeAccountUsername = "coffee2"
SecondEmployeeAccountPassword = "coffeeshop2"
ThirdEmployeeAccountUsername = "coffee3"
ThirdEmployeeAccountPassword = "coffeeshop3"
print("Welcome to our coffee shop!")
print("Login")
# EMPLOYEE LOGIN PROCESS STARTS
LoginEnter = True
while LoginEnter:
username = input("Username: ")
password = input("Password: ")
if username == FirstEmployeeAccountUsername and password == FirstEmployeeAccountPassword or username == SecondEmployeeAccountUsername and password == SecondEmployeeAccountPassword or username == ThirdEmployeeAccountUsername and password == ThirdEmployeeAccountPassword:
print("Login Successful")
LoginEnter = False
else:
print("Invalid Login. Try again")
# EMPLOYEE LOGIN PROCESS ENDS
# PROCESS AFTER ORDER PLACEMENT STARTS
process1 = True
process2 = True
while process1:
while process2:
x += 1
Customer_Name = input("Customer's Name:")
Customer_Address = input("Customer's Address:")
Address_List.append(Customer_Address)
Customer_List.append(Customer_Name)
if x == 1:
if Customer_Address in Address_List:
First_Index = Address_List.index(Customer_Address)
if Customer_Name == Customer_List[First_Index]:
Customer_List.pop(First_Index)
Address_List.pop(First_Index)
x = x - 1
if Today_Key not in Dates:
Dates[Today_Key] = {}
if Customer_Name not in Dates[Today_Key]:
Dates[Today_Key][Customer_Name] = 1
else:
Dates[Today_Key][Customer_Name] += 1
if Customer_Name in Customers:
Customers[Customer_Name]['Orders'] += 1
Customers[Customer_Name]['TotalAmount'] = Total_Amount
else:
Customers[Customer_Name] = {}
Customers[Customer_Name]['Name'] = Customer_Name
Customers[Customer_Name]['Address'] = Customer_Address
Customers[Customer_Name]['ID'] = uuid.uuid1()
Customers[Customer_Name]['Orders'] = 1
Customers[Customer_Name]['TotalAmount'] = 0
print(Customer_Name, "has ordered {} time(s)".format(Customers[Customer_Name]['Orders']))
if Customers[Customer_Name]['TotalAmount'] == 0:
print("This is the first time", Customer_Name, "orders")
else:
print(Customer_Name, "has spent", Customers[Customer_Name]['TotalAmount'], "in total")
print("Current Date is: {}".format(Today_Date))
Order_Price = float(input("Total amount of order:"))
Total_Amount = Order_Price + Total_Amount
if Print_Today != Today_Date:
print("Total amount of orders today is: ", float(Total_Amount))
answer1 = input("Send another order? (Y/N)").lower()
process2 = answer1 == "y"
LengthCustomersList = len(Customer_List)
length += 1
in_list += 1
file.write(str(Customer_List[0:]) + '\n') # TAKE CARE FOR DUPLICATE NAMES FROM SAME ADDRESS
file1.write(Customer_Name + " has ordered " + str(Customers[Customer_Name]['Orders']) + " times in total\n")
# FIX DUPLICATES SAME NAME SAME ADDRESS
csv_writer = DictWriter(open('data_entered.csv','a'), fieldnames=['Customer Name', 'Customer Address', 'Customer ID', 'Total Orders',
'Total Amount'])
csv_writer.writeheader()
csv_writer.writerows([{'Customer Name': Customers[Customer_Name]['Name'],'Customer Address': Customers[Customer_Name]['Address'],
'Customer ID': Customers[Customer_Name]['ID'],
'Total Orders': Customers[Customer_Name]['Orders'],
'Total Amount': Customers[Customer_Name]['TotalAmount']}]) # TOTAL AMOUNT= 0 IF NOT MORE THAN 2 TIMES ORDER
if int(length) == int(LengthCustomersList):
process1 = False
file.close()
file1.close()
file2.close()
This is the output I am currently getting
The question is: Why does it only import the name that it gets inputted twice, and not Michelle in this case.
PS*. I would like to understand how to fix this. So please don't just give me the solution straight up
回答1:
It looks like you don't loop through the Customers dictionary in order to add it to the CSV File. You can use the .keys() attribute of the Customers nested dictionary and loop through each customer dictionary. Inside the loop, use .writerow() function to add the data of the current customer.
My changes to the code:
# Rest of the code
csv_writer = DictWriter(open('data_entered.csv', 'a'),
fieldnames=['Customer Name', 'Customer Address', 'Customer ID', 'Total Orders',
'Total Amount'])
csv_writer.writeheader()
for customer_name in Customers.keys():
csv_writer.writerows(
[{'Customer Name': Customers[customer_name]['Name'], 'Customer Address': Customers[customer_name]['Address'],
'Customer ID': Customers[customer_name]['ID'],
'Total Orders': Customers[customer_name]['Orders'],
'Total Amount': Customers[customer_name]['TotalAmount']}]) # TOTAL AMOUNT= 0 IF NOT MORE THAN 2 TIMES ORDER
Full code :
import uuid # GET A RANDOM ID FOR THE CUSTOMER
from datetime import date # GET CURRENT DATE
from csv import DictWriter
file = open('CustomerNames.txt', 'w')
file1 = open('Orders_Per_Users.txt', 'a')
file2 = open('data_entered.csv', 'a')
x = -1
in_list = -1
length = 0
Total_Amount = 0.0
Customer_List = []
Address_List = []
Today_Key = date.toordinal(date.today())
Today_Date = date.today()
Print_Today = Today_Date
Customers = {}
Dates = {}
FirstEmployeeAccountUsername = "coffee1"
FirstEmployeeAccountPassword = "coffeeshop1"
SecondEmployeeAccountUsername = "coffee2"
SecondEmployeeAccountPassword = "coffeeshop2"
ThirdEmployeeAccountUsername = "coffee3"
ThirdEmployeeAccountPassword = "coffeeshop3"
print("Welcome to our coffee shop!")
print("Login")
# EMPLOYEE LOGIN PROCESS STARTS
LoginEnter = True
while LoginEnter:
username = input("Username: ")
password = input("Password: ")
if username == FirstEmployeeAccountUsername and password == FirstEmployeeAccountPassword or username == SecondEmployeeAccountUsername and password == SecondEmployeeAccountPassword or username == ThirdEmployeeAccountUsername and password == ThirdEmployeeAccountPassword:
print("Login Successful")
LoginEnter = False
else:
print("Invalid Login. Try again")
# EMPLOYEE LOGIN PROCESS ENDS
# PROCESS AFTER ORDER PLACEMENT STARTS
process1 = True
process2 = True
while process1:
while process2:
x += 1
Customer_Name = input("Customer's Name:")
Customer_Address = input("Customer's Address:")
Address_List.append(Customer_Address)
Customer_List.append(Customer_Name)
if x == 1:
if Customer_Address in Address_List:
First_Index = Address_List.index(Customer_Address)
if Customer_Name == Customer_List[First_Index]:
Customer_List.pop(First_Index)
Address_List.pop(First_Index)
x = x - 1
if Today_Key not in Dates:
Dates[Today_Key] = {}
if Customer_Name not in Dates[Today_Key]:
Dates[Today_Key][Customer_Name] = 1
else:
Dates[Today_Key][Customer_Name] += 1
if Customer_Name in Customers:
Customers[Customer_Name]['Orders'] += 1
Customers[Customer_Name]['TotalAmount'] = Total_Amount
else:
Customers[Customer_Name] = {}
Customers[Customer_Name]['Name'] = Customer_Name
Customers[Customer_Name]['Address'] = Customer_Address
Customers[Customer_Name]['ID'] = uuid.uuid1()
Customers[Customer_Name]['Orders'] = 1
Customers[Customer_Name]['TotalAmount'] = 0
print(Customer_Name, "has ordered {} time(s)".format(Customers[Customer_Name]['Orders']))
if Customers[Customer_Name]['TotalAmount'] == 0:
print("This is the first time", Customer_Name, "orders")
else:
print(Customer_Name, "has spent", Customers[Customer_Name]['TotalAmount'], "in total")
print("Current Date is: {}".format(Today_Date))
Order_Price = float(input("Total amount of order:"))
Total_Amount = Order_Price + Total_Amount
if Print_Today != Today_Date:
print("Total amount of orders today is: ", float(Total_Amount))
answer1 = input("Send another order? (Y/N)").lower()
process2 = answer1 == "y"
LengthCustomersList = len(Customer_List)
length += 1
in_list += 1
file.write(str(Customer_List[0:]) + '\n') # TAKE CARE FOR DUPLICATE NAMES FROM SAME ADDRESS
file1.write(Customer_Name + " has ordered " + str(Customers[Customer_Name]['Orders']) + " times in total\n")
# FIX DUPLICATES SAME NAME SAME ADDRESS
csv_writer = DictWriter(open('data_entered.csv', 'a'),
fieldnames=['Customer Name', 'Customer Address', 'Customer ID', 'Total Orders',
'Total Amount'])
csv_writer.writeheader()
for customer_name in Customers.keys():
csv_writer.writerows(
[{'Customer Name': Customers[customer_name]['Name'], 'Customer Address': Customers[customer_name]['Address'],
'Customer ID': Customers[customer_name]['ID'],
'Total Orders': Customers[customer_name]['Orders'],
'Total Amount': Customers[customer_name]['TotalAmount']}]) # TOTAL AMOUNT= 0 IF NOT MORE THAN 2 TIMES ORDER
if int(length) == int(LengthCustomersList):
process1 = False
file.close()
file1.close()
file2.close()
More information on .keys() and other dictionary built-in methods: https://www.w3schools.com/python/python_ref_dictionary.asp
来源：https://stackoverflow.com/questions/65271618/how-can-i-fix-the-csv-imports