python - 我正在尝试用 spyder python 编写这个程序（很长一段时间后开始）。基本上我希望数据框“信息”永久存储用户值

Question

这是该项目的代码。它基于一个银行管理系统，可以注册新用户并允许注册用户进行交互。该代码非常基本，尚未完成，即仅编码到您可以注册的部分。它接受用户输入并将它们存储在数据框“信息”中。问题是每当我执行代码时，之前输入的用户值就会消失。

- - 编码：utf-8 - -

"""
Created on Mon Sep 13 19:45:40 2021

@author: Hp
"""

import pandas as pd
import datetime as dt
import sys

print("Welcome to Lotus Bank! Please select from one of the options below: ")
print("1. Create a new user account")
print("2. Login into an existing bank account.")

in1 = int(input())

#create bank account
if in1 == 1:
    print("We are honoured that you chose us as your trusted bank. Please fill in all the information to apply for a bank account.")
    
    pf = input("Prefix: ")
    n1 = input("First Name: ")
    n2 = input("Last Name: ")
    name = pf + " " + n1 + " " + n2
    
    print("Date of Birth: ")
    d1 = int(input("Day: "))
    
    if d1 >= 1 and d1 <= 31:
        d2 = int(input("Month: "))
    else:
        print("Please enter a valid day.")
        sys.exit()
        
    if d2 >= 1 and d2 <= 12:
        d3 = int(input("Year: "))
    else:
        print("Please enter a valid month.")
        sys.exit()
        
    if d3 >= 2004:
        print("Age too less to open a bank account.")
        sys.exit()
                
    elif d3 <= 1920:
        print("Please enter a valid year.")
        sys.exit()

    else: 
                
        g = input("Please enter your gender: ")
        print(" ")
        age = 2021-d3
        dob = dt.date(d3, d2, d1)
        print("Date of Birth: ", dob)
        print("Full Name: ", name)
        print("Gender: ", g)
        print("Age: ", age)
        print(" ") 
                
        c1 = input("Is this information correct? [Y/N] ")
            
        if c1 == 'Y' or 'y':
            print("Please continue: ")
        elif c1 == 'N' or 'n':
            ("Please retry entering your details.")
            sys.exit()
        else:
            print("Please enter a valid option.")
            sys.exit()
        
        print("Please select a number to choose the type of account to be created: ") 
        print("1. Current Account")
        print("2. Savings Account")
        c2 = int(input())
   
    if c2 == 1:
            print("You have chosen Current Account. Please fill the following details to continue: ")
            acnt = "Current"
            sal = int(input("Please enter your monthly salary: "))
            if sal < 30000:
                print("Salary too low to open a Current Account. Please try to open a Savings Account.")
                sys.exit()
            else:
                dep = int(input("Enter Deposit value (minimum deposit value is 50000): "))
                if dep < 50000:
                    print("Deposit value is too low. Please try again.")
                    sys.exit()
                else:
                    c3 = input("You have deposited "+ str(dep)+ ". Please confirm[Y/N] ")
                    
                    if c3 == 'Y' or c3 == 'y':
                        print("Thank you for creating your bank account with us.")
                        pin = int(input("Please enter your desired pin: "))
                        c4 = input("Please confirm your pin: "+ str(pin)+ " [Y/N] ")
                        print(" ")
                        if c4 == 'Y' or c4 == 'y': 
                            ipm = 0
                            print("Please confirm the information provided: ")
                            print("Account Type: ", acnt)
                            print("Salary: ", sal)
                            print("Deposit: ", dep) 
                            print("PIN: ", pin)
                            c5 = input("[Y/N] ")
                            if c5 == 'Y' or c5 == 'y':
                                info = pd.DataFrame([[name, dob, age, g, acnt, sal, dep, ipm, pin]], columns = ["Name", "Date of Birth", "Age", "Gender", "Account Type", "Salary", "Deposit", "Interest", "PIN"])
                                print("You have successfully created your bank account! Please login to continue.")
                                sys.exit()
                            elif c5 == 'N' or c5 == 'n':
                                print("Please retry creating your bank account.")
                                sys.exit()
                            else:
                                print("Please enter a valid option.")
                                sys.exit()
                                
                        elif c4 == 'N' or c4 == 'n':
                            print("Please try to create your bank account again.")
                            sys.exit()
                            
                        else: 
                            print("Please enter a valid option.")
                            sys.exit()
                            
                    elif c3 == 'N' or c3 == 'n': 
                        print("Please retry creating your bank account.")
                        sys.exit()
                    else: 
                        print("Please enter a valid option.")
                        sys.exit()
                        
    elif c2 == 2:
        print("You have chosen Savings Account. Please fill in all the information to apply for a bank account.")
        acnt = "Savings"
        
        sal = int(input("Please enter your monthly salary: "))
        
        dep = int(input("Please enter deposit amount: "))
        print(" ")
        ipm = 0.06*dep
        print("Your interest p.a. is: " + str(ipm)) 
        print(" ")
        
        print("Please confirm the information provided: ")
        print("Account Type: ", acnt)
        print("Salary: ", sal)
        print("Deposit: ", dep) 
        c6 = input("[Y/N]: ")
        
        if c6 == 'Y' or c6 == 'y':
            pin = int(input("Please enter your desired pin: "))
            c7 = input("Please confirm your pin: "+ str(pin)+ " [Y/N] ")
        
            
            if c7 == 'Y' or c7 == 'y':
                info = pd.DataFrame([[name, dob, age, g, acnt, sal, dep, ipm, pin]], columns = ["Name", "Date of Birth", "Age", "Gender", "Account Type", "Salary", "Deposit", "Interest", "PIN"])
                print("You have successfully created your bank account! Please login to continue.")
                sys.exit()
            elif c7 =='N' or c7 == 'n': 
                print("Please retry creating your bank account.")
                sys.exit()
            else: 
                print("Please enter a valid option.")
                sys.exit()
                
        elif c6 == 'N' or c6 == 'n':
            print("Please retry creating your bank account.")
            sys.exit()
        else:
            print("Please enter a valid option.")
            sys.exit()
            
    else:
        print("Please enter a valid option.")
        sys.exit()

请建议如何永久存储用户值，以便即使在执行代码后我也可以访问数据。非常感谢所有建议。谢谢！

标签： pythonpandasdataframespyder