python路径

 

 

# -*- coding: utf-8 -*-
with open(r'.\test_data\demo.txt','w',encoding='utf-8') as f:
    f.write('相对abc')

print("*"*50+"相对路径测试end"+"*"*50)

with open(r'C:\Users\DELL\PycharmProjects\demo20200722\test_data\demo.txt','w',encoding='utf-8') as f:
    f.write('绝对abc')

print("*"*50+"绝对路径测试end"+"*"*50)

　　

 

# -*- coding: utf-8 -*-
import os,sys
project_path = os.path.dirname(os.path.abspath(__file__)) # 获取当前文件路径的上一级目录
file_path = project_path+r'\test_data\demo.txt'# 拼接路径字符串
with open(file_path,'w',encoding="utf-8") as f:
    f.write("动态abc")
print("*"*50+"动态绝对路径测试end"+"*"*50)