在if语句下将两个for循环合并在一起

Question

我试图将这两个代码合并在一起，以便最后一部分可以将文本文档“Payments”附加到列表中。对于“付款”的每一行，我希望它在myList名单内，所以它看起来是这样的：

myList = [['E1234','12/09/14','440','A','0']['E3431','10/01/12','320','N','120']['E0987','04/12/16','342','A','137']] 

我希望能够创建最终的代码来提示用户输入客户号码，然后通过myList搜索客户号码并在屏幕上显示客户的所有信息。

这是两个程序中的第一个。它是最终代码的“骨干”。我们称之为A：

print("Option A: Show a record\nOption Q: Quit") 
decision = input("Enter A or Q: ") 

if decision == "A" or decision == "a": 
    myFile = open("Payments.txt") 
    customer_number = input("Enter a customer number to view their details: ") 
    record = myFile.readlines() 
    for line in record: 
     if customer_number in line: 
      print(line) 
    myFile.close() 

elif decision == "Q" or "q": 
    exit 

这是第二段代码。我们称之为B：

myFile = open("Payments.txt") 
myList = [] 
for item in myFile: 
    print(item.strip()) 
    myList.append(item.strip().split(',')) 
myFile.close() 
print(myList) 

我想在if语句中插入B：if decision == "A" or decision == "a":。

我对for循环感到困惑，因为A和B中都有for循环，这两个循环对于最终代码都是至关重要的。我无法将B置入A而不会中断任何一个for循环。

print("Option A: Show a record\nOption Q: Quit") 
decision = input("Enter A or Q: ") 
myList = [] 

if decision == "A" or decision == "a": 
    myFile = open("Payments.txt") 
    customer_number = input("Enter a customer number to view their details: ") 
    record = myFile.readlines() 
    for line in record: 
     for item in myFile: 
      print(item.strip()) 
      myList.append(item.strip().split(',')) 
      print(myList) 
     if customer_number in line: 
      print(line) 
    myFile.close() 

elif decision == "Q" or "q": 
    exit 

它显示客户号码来自的行，但它不打印列表。

更新

我希望能够从单独的每一行打印的个人数据：

Customer number: E1234 
Date of payment: 12/09/14 
Payment amount: £440 
Paid amount: £0 

Answer 1

在你的评论中提到您需要追加到一个列表，所以我有修改了我的脚本以包含该内容，但是您当前的答案是分离您的A和B部分，但您必须将它们合并。

逻辑是，如果customer_number存在于一行中，则您追加到列表并使用循环遍历列表以打印您想要的内容。您的解决方案是打印整个客户的详细信息，并打印每隔一行。

print("Option A: Show a record\nOption Q: Quit") 
decision = input("Enter A or Q: ").lower() 
myList = [] 

if decision == "a": 
    myFile = open("Payments.txt") 
    customer_number = input("Enter a customer number to view their details: ") 
    record = myFile.readlines() 
    for line in record: 
     if customer_number in line: 
      myList.append(line.strip().replace("'","").split(',')) 
      for info in myList: 
       print("Customer number: ", info[0]) 
       print("Date of payment: ", info[1]) 
       print("Payment Amount: ", info[2]) 
       print("Paid Amount: ", info[4]) 
    myFile.close() 

elif decision == "q": 
    exit() 

这里是输出：

Answer 2

我希望能够创建最终的代码，以提示用户输入 客户编号，然后通过myList中的搜索客户号码 ，并在屏幕上显示客户的所有信息。

我对代码进行了一些修改，并将其放入符合PEP-8的Boilerplate中。

def customer_payment(customer_number): 
    """Edited Code. Purpose is to accept User Input for a customer number 
    Search for Customer Number, and if Found, Display Information about Customer. 
    """ 
    myList = [] 
    with open("Payments.txt") as myFile: 
     for line in myFile: 
      if customer_number in line: 
       print(line) 
      for item in line: 
       print(item.strip()) 
       myList.append(line.strip().split(',')) 


def main(): 
    decision = input("Option A: Show a record\nOption Q: Quit\nEnter A or Q: ") 
    if decision.lower() == "a": 
     customer_number = input("Enter a customer number to view their details: ") 
     customer_payment(customer_number) 

if __name__=="__main__": 
    main() 

这可能需要基于这样Payments.txt是格式进行修改。