python 文件操作的相对路径和绝对路径(windows)

1.相对路径

windows  ‘.\’表示当前路径

1 2	with open(r'.\db\123.txt','w',encoding='utf-8') as f:     f.write('abc')

 

2.绝对路径

2.1 直接加死绝对路径

1 2	with open('c:\db\123.txt','w',encoding='utf-8') as f:     f.write('abc')

2.2 动态绝对路径

1 2 3 4 5

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'\db\123.txt' # 拼接路径字符串 with open(file_path,'w',encoding='utf-8') as f:     f.write('abc')