读取__init__函数中的类中的文件不起作用

import os

class MyClass:
    def __init__(self):
        # 获取当前文件的目录
        current_dir = os.path.dirname(os.path.abspath(__file__))
        # 构建文件的完整路径
        file_path = os.path.join(current_dir, 'myfile.txt')
        with open(file_path, 'r') as file:
            content = file.read()

import os

class MyClass:
    def __init__(self):
        file_path = 'path_to_your_file/myfile.txt'
        if os.path.exists(file_path):
            with open(file_path, 'r') as file:
                content = file.read()
        else:
            print("File does not exist.")

class MyClass:
    def __init__(self):
        file_path = 'path_to_your_file/myfile.txt'
        with open(file_path, 'r', encoding='utf-8') as file:  # 指定编码格式
            content = file.read()