从运行时确定的 Python 文件中导入字典

import sys
import importlib
import os

def load_dictionary_from_file(directory_with_file, filename_without_py_extension, dict_name):
    """
    从指定 Python 文件中加载字典。

    Args:
        directory_with_file: 包含 Python 文件的目录。
        filename_without_py_extension: 不带 .py 扩展名的文件名。
        dict_name: 字典的名称。

    Returns:
        字典，如果成功加载；否则返回 None。
    """
    try:
        sys.path.append(directory_with_file)
        module_with_user_dict = importlib.import_module(filename_without_py_extension)
        return getattr(module_with_user_dict, dict_name)
    except ImportError as e:
        print(f"导入错误: {e}")
        return None
    except AttributeError as e:
        print(f"属性错误: 字典 '{dict_name}' 不存在于文件中。")
        return None
    finally:
        # 移除添加的路径，避免影响后续导入
        if directory_with_file in sys.path:
            sys.path.remove(directory_with_file)

# 示例用法
directory = "SubFolder"  # 假设 SubFolder 存在于当前工作目录
filename = "Test"
dict_name = "my_dictionary"

# 创建一个示例文件 Test.py
filepath = os.path.join(directory, filename + ".py")
if not os.path.exists(directory):
    os.makedirs(directory)
with open(filepath, "w") as f:
    f.write("my_dictionary = {'key1': 'value1', 'key2': 'value2'}")

loaded_dict = load_dictionary_from_file(os.path.abspath(directory), filename, dict_name)

if loaded_dict:
    print("成功加载字典:", loaded_dict)
    # 删除示例文件和目录，清理环境
    os.remove(filepath)
    os.rmdir(directory)
else:
    print("加载字典失败。")