如何从文本文件中读取字典？

import json

def read_dict_from_file(file_path):
    try:
        with open(file_path, 'r') as file:
            content = file.read()
            dictionary = json.loads(content)
            return dictionary
    except FileNotFoundError:
        print("文件不存在")
    except json.JSONDecodeError:
        print("文件内容不是有效的JSON格式")
    except Exception as e:
        print("读取文件时发生错误:", str(e))

# 示例用法
file_path = "dictionary.txt"
dictionary = read_dict_from_file(file_path)
if dictionary:
    print("读取到的字典内容：", dictionary)