python如何一次打印出一组信息？

Question

我是 python 初学者 我尝试制作一个联系簿程序，但这是问题所在，我想添加类似搜索的功能，所以在我添加联系人姓名、电话号码、email 并将其存储到另一个文件（contact.txt）之后我想通过搜索访问它并打印它。

例子：

姓名：约翰电话：036902480157 Email：Johan@Email.com

我想通过输入他的联系人姓名或他的电话号码来访问有关 Johan 的所有信息，我该怎么做？

注意：我想在每一行中打印姓名、电话号码和 email

提前致谢

我的代码

import os

def head():
    print("")
    print("========================")
    print("      Contact Book      ")
    print("========================")

def restart():
    response = input("\nOpen menu again? (yes/no): ").lower()
    if response == "yes":
        task()
    else:
        print("\nSee You next time!")

def task():
    head()
    done = False
    print('''1. Add Contact
2. Search
3. View Contact List
4. Delete All Contact
5. Exit''')
    while not done:
        task = input("\nWhat do You want to do? (1-5):")
        if task == "1":
            print("\nAdding a new contact!")
            with open('contact.txt', 'a') as f:
                name = input("Name: ")
                phone = input("Phone Number: ")
                if not phone.isnumeric():
                    while not phone.isnumeric():
                        print("Invalid input, please enter only a number!")
                        phone = input("Phone Number: ")
                email = input("Enter an email: ")
                f.writelines(('\n',('=' * 15),'\nName: ',name,
                              '\nPhone: ',phone,'\nEmail: ',email,'\n',('=' * 15)))
                print("\nContact is saved!")
            done = True
            restart()

        elif task == "2":
            with open('contact.txt', 'r') as f:
                search = input("\nSearch: ")
                for i in f:
                    if search in i:
                        print(i)
                else:
                    print("\nNo info was found!")
            done = True
            restart()

        elif task == "3":
            if os.path.getsize('contact.txt') == 0:
                print("\nNo contact info available!")
            else:
                with open('contact.txt', 'r') as f:
                    print("\nAll Contact Info")
                    for i in f:
                        print(i,end="")
            done = True
            restart()

        elif task == "4":
            with open('contact.txt', 'w') as f:
                print("\nSuccesfully deleted all contact info!")
            done = True
            restart()

        elif task == "5":
            print("See You next time!")
            break

        else:
            print("Invalid input please enter a single number from 1 to 5")
            restart()
   
task()

Answer 1

添加联系人然后搜索此联系人打印：

Adding a new contact!
Name: mrd
Phone Number: 99
Enter an email: the@ff.com

Contact is saved!
...
                              
What do You want to do? (1-5):2

Search: mrd
Name: mrd                  
                           
                           
No info was found!      

这是不准确的，因为你只是找到了这个名字。 您要做的是将所有联系信息保存在 contacts.txt 中的同一行中，这样当您搜索号码或姓名时，它会返回该行，然后您可以根据需要打印。

或者，您可以按照建议在 memory 中保留一个字典，该字典在 json 退出时坚持使用，并在启动程序时加载

---

在回答评论

    if task == "1":
        print("\nAdding a new contact!")
        # TODO make sure no commas in the input!
        name = input("Name: ")
        phone = input("Phone Number: ")
        while not phone.isnumeric():
            print("Invalid input, please enter only a number!")
            phone = input("Phone Number: ")
        email = input("Enter an email: ")
        with open('contact.txt', 'a') as f:
            f.write(','.join([name, phone, email]) + '\n')
        print("\nContact is saved!")
        done = True
        restart()
    elif task == "2":
        search = input("\nSearch: ")
        with open('contact.txt', 'r') as f:
            for i in f:
                if search in i:
                    for caption, data in zip(['Name:', 'Phone:', 'Email:'],
                                             i.split(',')):
                        print(caption, data)
                    break # contact was found don't go to the else!
            else:
                print("\nNo info was found!")
        done = True
        restart()