Python 配置绝对路径和相对路径（为了解决文件夹内class文件调用别的文件夹内class的问题）

import os
import sys
# sys.path.append(os.getcwd())

# filename = "E:\python小脚本\测试导入\projects\project1\project1_1\Text1_1.txt" # 绝对路径
# filename = "E:\\python小脚本\\测试导入\\projects\\project1\\project1_1\\Text1_1.txt" # 绝对路径

# filename = "Text1_1.txt"  # 当前目录
# filename = "/python小脚本/测试导入/projects/project1/project1_1/Text1_1.txt" # 根目录
# filename = "../测试导入/projects/project1/project1_1/Text1_1.txt" # 上级目录
# filename = "project1_1/Text1_1.txt" # 上级目录
# filename = "../../测试导入/projects/project1/project1_1/Text1_1.txt" # 上级目录的上级目录
# filename = "../../../测试导入/projects/project1/project1_1/Text1_1.txt" # 上级目录的上级目录的上级目录
# filename = "project1_1/Text1_1.txt" # 当前目录下的子目录
filename = "./project1_1/Text1_1.txt" # 当前目录下的子目录，同上

print("当前路径:")
print(os.getcwd())
print()

with open (filename, encoding="utf-8") as file_object:
    for line in file_object:
        print(line.strip())

# -*- coding: utf-8 -*-
import sys
import os
# sys.path.append(‘/media/E/xh/code/TestCode‘)
sys.path.append(‘../‘)