如何在Python中实现用户向数组添加元素？类结构问题求助

Hey there! I totally get where you're coming from—learning Python classes can feel a bit tricky at first, especially when you can't find clear resources to wrap your head around the structure. Let's break this down step by step to get that "add elements to an array" functionality working for you.

First, let's recap the core parts of a class that we'll need here:

• The __init__ method: This is the constructor, which runs when you create a new instance of the class. We'll use it to initialize our empty "array" (in Python, we typically use lists for dynamic array-like behavior).
• Class attributes: Variables that belong to the instance, like our list of elements.
• Class methods: Functions that operate on the instance's attributes—this is where we'll put our logic to add elements.

Here's a complete, working example that lets users input elements and add them to the array (list) in a class:

class ElementManager:
    def __init__(self):
        # Initialize an empty list to store elements
        self.element_array = []
    
    def add_to_array(self, new_element):
        # Add the new element to our list
        self.element_array.append(new_element)
        print(f"Successfully added: {new_element}")
        print(f"Current array: {self.element_array}\n")

# Let's use the class with user input
if __name__ == "__main__":
    manager = ElementManager()
    print("Welcome! Enter elements to add to the array. Type 'exit' when you're done.\n")
    
    while True:
        user_input = input("Enter an element: ")
        if user_input.lower() == "exit":
            print("Thanks for using the Element Manager! Final array:", manager.element_array)
            break
        # Pass the user's input to our add method
        manager.add_to_array(user_input)

• The ElementManager class: We name it something descriptive so it's clear what it does.
• __init__ method: When we create manager = ElementManager(), this sets up self.element_array as an empty list.
• add_to_array method: Takes a new_element parameter, uses append() to add it to the list, and gives feedback to the user.
• User interaction loop: The while True loop keeps asking for input until the user types 'exit', then it shows the final array.

• If you want to work with numbers instead of strings, you can convert the user input using int(user_input) or float(user_input) (just add error handling in case the user enters non-numeric values!).
• Add a method to remove elements, or display the array without adding new ones.
• Validate inputs to prevent empty entries: check if user_input.strip() is empty before adding it.

内容的提问来源于stack exchange，提问作者faniiruh