python打印当前文件的绝对路径并解决打印为空的问题

import os

file_path = os.path.dirname(os.path.abspath(__file__))
print(file_path)

os.path.dirname(__file__)

|_ conf
	|_ config.yaml
|_src 
	|_代码  # 当前位置

import os
cur_path = os.path.abspath(__file__)
print(cur_path)

import os
cur_dir = os.path.dirname(os.path.abspath(__file__))  # 上级目录
print(cur_dir)

import os
cur_dir = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))   # 上级目录
print(cur_dir)

import os
# 法一 
cur_dir1 = os.path.dirname(os.path.abspath(__file__))
path1 = os.path.join(os.path.abspath(cur_dir + os.path.sep + ".."), "test.txt") 
# 法二
cur_dir2 = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
path2 = os.path.join(os.path.dirname(cur_dir), "test.txt")
print(path1)
print(path2)