import  os
import sys

# os.path.abspath(__file__)：当前执行文件的路径，如 D：\aaa\bbb\ccc.py
# os.path.dirname(os.path.abspath(__file__))：当前执行文件的上级路径，如 D：\aaa\bbb
# 继续向上：os.path.dirname（os.path.dirname(os.path.abspath(__file__))）：D：\aaa
# 添加路径：sys.path.append
# 路径不存在则自动创建：os.makedirs(os.path.dirname(filename), exist_ok=True)
# 路径组合：os.path.join(path1,path2,path3……)

# 案例
filepath = 'file/123.mp4'  # 再当前执行文件的目录的子文件file文件夹创建123.MP4文件
os.makedirs(os.path.dirname(filepath), exist_ok=True)  # 如果file文件夹不存在，则创建file文件夹

a = os.path.abspath(__file__)
print(a)  # D:\Python\python_learning\py_lujing.py

b = os.path.dirname(a)
print(b)  # D:\Python\python_learning

base_path = os.path.dirname(os.path.abspath(__file__))  # 当前脚本所在路径 D:\Python\python_learning
file_path1 = base_path + "/file/info.txt"  # 路径拼接方法一（只能windows）：D:\Python\python_learning\file\info.txt
file_path2 = os.path.join(base_path,'file','info.txt')  # 路径拼接方法二（系统兼容）：D:\Python\python_learning\file\info.txt
file_path0 = os.path.join(base_path,'file')  # D:\Python\python_learning\file

if os.path.exists(file_path2):  # 判断文件路径是否存在
    file = open(file_path2,mode='r',encoding='utf-8')
    data = file.read()
    file.close()
else:
    os.makedirs(file_path0)  # 路径不存在则创建路径，创建的是文件夹file

# 判断是否文件夹
is_dir = os.path.isdir(file_path2)
print(is_dir)  # False
is_dir = os.path.isdir(file_path0)
print(is_dir)  # True

import shutil
shutil.rmtree(file_path0)  # 删除路径
shutil.copytree('D:\Python\python_learning\\file','D:\Python\python_learning\\file2')  # 把file拷贝到file2
shutil.copy('D:\Python\python_learning\py_01.py','D:\Python\python_learning\\file')  # 把py_01.py拷贝到file
shutil.copy('D:\Python\python_learning\py_01.py','D:\Python\python_learning\\file\\py_02.py')  # 把py_01.py拷贝到file并命名为py_02.py
shutil.move('D:\Python\python_learning\py_lei.py','D:\Python\python_learning\py_lei2.py')  # 把py_lei.py重命名为py_lei2.py
shutil.move('D:\Python\python_learning\\file','D:\Python\python_learning\\file1')  # 把file重命名file1