os.path模块
1、os.path.join():将分散的路径组合成完整的路径
import os
a = 'data'
b = 'train'
c = 'train_1.txt'
path = os.path.join(a,b,c)
print('path = ',path)
>>>
path = data\train\train_1.txt
2、os.path.split():将文件与路径分离
out=os.path.split(path)
print(out)
>>>
('data\\train', 'train_1.txt')
3、os.path.splitext(): 分离路径中的文件格式
out=os.path.splitext(path)
print(out)
>>>
('data\\train\\train_1', '.txt')