用payhon写一个英文词典

好的，我可以为您提供一个简单的英文词典的Python代码示例：

import json

# 加载词典数据
with open("dictionary.json", "r") as f:
    dictionary = json.load(f)

# 查询单词
def lookup(word):
    if word in dictionary:
        return dictionary[word]
    else:
        return "Word not found."

# 添加单词
def add_word(word, definition):
    dictionary[word] = definition
    with open("dictionary.json", "w") as f:
        json.dump(dictionary, f)
    return "Word added successfully!"

while True:
    print("\nWelcome to the English dictionary! Choose an option:")
    print("1. Look up a word")
    print("2. Add a word")
    print("3. Exit")
    choice = input("> ")

    if choice == "1":
        word = input("Enter a word to look up: ")
        definition = lookup(word)
        print(definition)

    elif choice == "2":
        word = input("Enter a new word to add: ")
        definition = input("Enter the definition of the word: ")
        message = add_word(word, definition)
        print(message)

    elif choice == "3":
        break

    else:
        print("Invalid choice. Please try again.")

这个英文词典使用JSON文件来存储所有词汇和它们的定义。用户可以使用 `lookup` 函数来查询单词，并使用 `add_word` 函数来添加新单词。这只是一个简单的示例，您可以根据自己的需求进行修改和扩展。