"""

# ------------------------------------------------------------

# # 1、from 目录 import 文件

# # # 一般来说，涉及的跨目录调用一般是嵌套2层

目录结构：

day22_os_json_re_etc_MoKuai＼day22_1_os_json_re_etc_MoKuai.py( 该运行文件 )

day22_os_json_re_etc_MoKuai＼bin\bin.py

# ------------------------------------------------------------

"""

# from bin import bin

# if __name__ == "__main__":

#     print(bin.hello())

# #

# # D:\Anaconda3\python.exe D:/C_cache/py/day22_os_json_re_etc_MoKuai/day22_1_os_json_re_etc_MoKuai.py

# # here is bin directory!

# # hi! I am function hello!

# # None

# #

# # Process finished with exit code 0

# 02 sys修改环境变量

# 02 sys修改环境变量

# 02 sys修改环境变量

"""

# ------------------------------------------------------------

# # 2、sys修改环境变量（临时）

# # # 格式：sys.path.append("路径字符串") 或者 sys.path.append(r"路径字符串")

# # # 只有在运行该程序的时候才进行临修改，永久性修改的话要去“系统属性中修改”

# # # 永久性修改：win7电脑怎样修改环境变量_百度经验

# # # https://jingyan.baidu.com/article/b24f6c82cba6dc86bfe5da9f.html

# ------------------------------------------------------------

"""

#

# import sys

# print("before:  ",sys.path)

# sys.path.append("day22_os_json_re_etc_MoKuai/bin/bin.py")

# print("after:   ",sys.path)

#

# sys.path.append(r"day22_os_json_re_etc_MoKuai/bin/bin.py")      # 正则的时候会有这个知识点

# print("after:   ",sys.path)

# #

# # D:\Anaconda3\python.exe D:/C_cache/py/day22_os_json_re_etc_MoKuai/day22_1_os_json_re_etc_MoKuai.py

# # before:   ['D:\\C_cache\\py\\day22_os_json_re_etc_MoKuai', 'D:\\C_cache\\py\\day22_os_json_re_etc_MoKuai', 'D:\\Anaconda3\\python36.zip', 'D:\\Anaconda3\\DLLs', 'D:\\Anaconda3\\lib', 'D:\\Anaconda3', 'D:\\Anaconda3\\lib\\site-packages', 'D:\\Anaconda3\\lib\\site-packages\\win32', 'D:\\Anaconda3\\lib\\site-packages\\win32\\lib', 'D:\\Anaconda3\\lib\\site-packages\\Pythonwin', 'D:\\Program Files (x86)\\PyCharm 2018.1.3\\helpers\\pycharm_matplotlib_backend']

# # after:    ['D:\\C_cache\\py\\day22_os_json_re_etc_MoKuai', 'D:\\C_cache\\py\\day22_os_json_re_etc_MoKuai', 'D:\\Anaconda3\\python36.zip', 'D:\\Anaconda3\\DLLs', 'D:\\Anaconda3\\lib', 'D:\\Anaconda3', 'D:\\Anaconda3\\lib\\site-packages', 'D:\\Anaconda3\\lib\\site-packages\\win32', 'D:\\Anaconda3\\lib\\site-packages\\win32\\lib', 'D:\\Anaconda3\\lib\\site-packages\\Pythonwin', 'D:\\Program Files (x86)\\PyCharm 2018.1.3\\helpers\\pycharm_matplotlib_backend', 'day22_os_json_re_etc_MoKuai/bin/bin.py']

# # after:    ['D:\\C_cache\\py\\day22_os_json_re_etc_MoKuai', 'D:\\C_cache\\py\\day22_os_json_re_etc_MoKuai', 'D:\\Anaconda3\\python36.zip', 'D:\\Anaconda3\\DLLs', 'D:\\Anaconda3\\lib', 'D:\\Anaconda3', 'D:\\Anaconda3\\lib\\site-packages', 'D:\\Anaconda3\\lib\\site-packages\\win32', 'D:\\Anaconda3\\lib\\site-packages\\win32\\lib', 'D:\\Anaconda3\\lib\\site-packages\\Pythonwin', 'D:\\Program Files (x86)\\PyCharm 2018.1.3\\helpers\\pycharm_matplotlib_backend', 'day22_os_json_re_etc_MoKuai/bin/bin.py', 'day22_os_json_re_etc_MoKuai/bin/bin.py']

# # D:/C_cache/py/day22_os_json_re_etc_MoKuai

# #

# # Process finished with exit code 0

# 03 BASEDIR的介绍

# 03 BASEDIR的介绍

# 03 BASEDIR的介绍

"""

# ------------------------------------------------------------

# # 3、os.path.dirname(__file__) 与  os.path.abspath(__file__)

# # # 返回的是.py文件的目录

# # # 1） os.path.dirname(__file__)使用、Python os.path.abspath(__file__)使用 - 洛水浮生 - 博客园

# # # http://www.cnblogs.com/luoshuifusheng/p/9207238.html

# # # 2） python中的os.path.dirname(__file__)的使用 - CSDN博客

# # # https://blog.csdn.net/u011760056/article/details/46969883

# # # 

# ------------------------------------------------------------

"""

#

# import os

# print("__file__: \n",__file__)

# # 返回脚本的路径( 执行文件下的前一级目录，这个是基于当前系统下的绝对路径，

# # 当工程的位置修改后，就可能导致出错)

# print(os.path.dirname(__file__))

#

# # 返回的是.py文件的绝对路径（完整路径）

# print( os.path.abspath(__file__) )

#

# # D:\Anaconda3\python.exe D:/C_cache/py/day22_os_json_re_etc_MoKuai/day22_1_os_json_re_etc_MoKuai.py

# # __file__:

# #  D:/C_cache/py/day22_os_json_re_etc_MoKuai/day22_1_os_json_re_etc_MoKuai.py

# # D:/C_cache/py/day22_os_json_re_etc_MoKuai

# # D:\C_cache\py\day22_os_json_re_etc_MoKuai\day22_1_os_json_re_etc_MoKuai.py

# #

# # Process finished with exit code 0

"""

# ------------------------------------------------------------

# # 4、os.path.dirname(__file__) 与  os.path.abspath(__file__)  应用

# # # 在文件工程拷贝中，需要保证工程到其他的电脑系统中，不会出现文件路径问题，

# # # 可用下面的方式来解决

# # 4.1 __file__    这个拿到的是当前的文件名，在pycharm编译器中，编译器自动帮你添加了文件所在的路径

# ------------------------------------------------------------

"""

# import os,sys

#

# # # 这种虽然与下面的方式，似乎区别不大，但是实际上，这种方式在工程拷贝到其他电脑的时候

# # # 非常容易出错，因此采用的是下面的那种方式

# BASE_DIR1 = os.path.dirname(os.path.dirname((__file__)))

# sys.path.append(BASE_DIR1)

# print(BASE_DIR1)

# print(sys.path)

#

# # # 该的前一级目录（这个在工程拷贝到其他的系统中常用）<<<<<==========推荐使用

# BASE_DIR2 = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))

# sys.path.append(BASE_DIR2)

# print(BASE_DIR2)

# print(sys.path)

#

#

# # D:\Anaconda3\python.exe D:/C_cache/py/day22_os_json_re_etc_MoKuai/day22_1_os_json_re_etc_MoKuai.py

# # D:/C_cache/py

# # ['D:\\C_cache\\py\\day22_os_json_re_etc_MoKuai', 'D:\\C_cache\\py\\day22_os_json_re_etc_MoKuai', 'D:\\Anaconda3\\python36.zip', 'D:\\Anaconda3\\DLLs', 'D:\\Anaconda3\\lib', 'D:\\Anaconda3', 'D:\\Anaconda3\\lib\\site-packages', 'D:\\Anaconda3\\lib\\site-packages\\win32', 'D:\\Anaconda3\\lib\\site-packages\\win32\\lib', 'D:\\Anaconda3\\lib\\site-packages\\Pythonwin', 'D:\\Program Files (x86)\\PyCharm 2018.1.3\\helpers\\pycharm_matplotlib_backend', 'D:/C_cache/py']

# # D:\C_cache\py

# # ['D:\\C_cache\\py\\day22_os_json_re_etc_MoKuai', 'D:\\C_cache\\py\\day22_os_json_re_etc_MoKuai', 'D:\\Anaconda3\\python36.zip', 'D:\\Anaconda3\\DLLs', 'D:\\Anaconda3\\lib', 'D:\\Anaconda3', 'D:\\Anaconda3\\lib\\site-packages', 'D:\\Anaconda3\\lib\\site-packages\\win32', 'D:\\Anaconda3\\lib\\site-packages\\win32\\lib', 'D:\\Anaconda3\\lib\\site-packages\\Pythonwin', 'D:\\Program Files (x86)\\PyCharm 2018.1.3\\helpers\\pycharm_matplotlib_backend', 'D:/C_cache/py', 'D:\\C_cache\\py']

# #

# # Process finished with exit code 0

# 04 os模块的绍介

# 04 os模块的绍介

# 04 os模块的绍介

"""

# ------------------------------------------------------------

# # 5、os.getcwd()

# # # os.getcwd() 方法用于返回当前工作目录。

# ------------------------------------------------------------

"""

#

# import os

# print( os.getcwd())

#

# # D:\Anaconda3\python.exe D:/C_cache/py/day22_os_json_re_etc_MoKuai/day22_1_os_json_re_etc_MoKuai.py

# # D:\C_cache\py\day22_os_json_re_etc_MoKuai

# #

# # Process finished with exit code 0

"""

# ------------------------------------------------------------

# # 6、os.chdir()

# # # os.chdir() 方法用于改变当前工作目录到指定的路径。

# ------------------------------------------------------------

"""

#

# import os

# print( "当前目录：   ",os.getcwd())

# print("返回上级目录：" ,os.chdir(".."))

# print( "当前目录：   ",os.getcwd())

#

# print("D:\\：        ", os.chdir("D:\\"))

# print( "当前目录：   ",os.getcwd())

#

# # D:\Anaconda3\python.exe D:/C_cache/py/day22_os_json_re_etc_MoKuai/day22_1_os_json_re_etc_MoKuai.py

# # 当前目录：    D:\C_cache\py\day22_os_json_re_etc_MoKuai

# # 返回上级目录： None

# # 当前目录：    D:\C_cache\py

# # D:\：         None

# # 当前目录：    D:\

# #

# # Process finished with exit code 0

"""

# ------------------------------------------------------------

# # 7、os.chdir() 、 os.path.dirname 、 os.path.abspath() 与 __file__应用

# # # 获取执行文件所在的目录以及上级目录

# ------------------------------------------------------------

"""

#

# import os

# print( "当前目录：                    ",os.getcwd())

# print( "执行文件的绝对路径：          ",os.path.abspath(__file__) )

#

# os.chdir(os.path.dirname(os.path.abspath(__file__)))

# print( "返回执行文件的所在的目录：    ",os.getcwd())

#

# os.chdir(os.path.dirname( os.path.dirname(os.path.abspath(__file__))) )

# print( "返回执行文件的上一级目录：    ",os.getcwd())

#

# # D:\Anaconda3\python.exe D:/C_cache/py/day22_os_json_re_etc_MoKuai/day22_1_os_json_re_etc_MoKuai.py

# # 当前目录：                     D:\C_cache\py\day22_os_json_re_etc_MoKuai

# # 执行文件的绝对路径：           D:\C_cache\py\day22_os_json_re_etc_MoKuai\day22_1_os_json_re_etc_MoKuai.py

# # 返回执行文件的所在的目录：     D:\C_cache\py\day22_os_json_re_etc_MoKuai

# # 返回执行文件的上一级目录：     D:\C_cache\py

# #

# # Process finished with exit code 0

"""

# ------------------------------------------------------------

# # 8、os.curdir  返回当前目录: ('.')

# # # 返回当前目录: ('.'),它就是一个"."

# ------------------------------------------------------------

"""

#

# import os

# print(os.getcwd())

# print(os.curdir)

#

# print(os.getcwd())

# print(os.chdir("d:\\"))

#

# print(os.getcwd())

# os.chdir( os.curdir )

# print(os.getcwd())

#

# # D:\Anaconda3\python.exe D:/C_cache/py/day22_os_json_re_etc_MoKuai/day22_1_os_json_re_etc_MoKuai.py

# # D:\C_cache\py\day22_os_json_re_etc_MoKuai

# # .

# # D:\C_cache\py\day22_os_json_re_etc_MoKuai

# # None

# # d:\

# # d:\

# #

# # Process finished with exit code 0

"""

# ------------------------------------------------------------

# # 9、os.pardir

# # # 获取当前目录的父目录字符串名：('..')

# ------------------------------------------------------------

"""

#

# import os

# print(os.pardir)

#

# print(os.getcwd())

# print(os.chdir(os.pardir))

# print(os.getcwd())

#

# # D:\Anaconda3\python.exe D:/C_cache/py/day22_os_json_re_etc_MoKuai/day22_1_os_json_re_etc_MoKuai.py

# # ..

# # D:\C_cache\py\day22_os_json_re_etc_MoKuai

# # None

# # D:\C_cache\py

# #

# # Process finished with exit code 0

"""

# ------------------------------------------------------------

# # 10、os.makedirs

# # # 可生成多层递归目录,需要注意的是，这个是在当前目录下所创建的

# # # 分隔符有两种表达，linux：   "a/b/c"；       windows:"a1\\b1\\c1"

# ------------------------------------------------------------

"""

#

# import os

# os.makedirs("a/b/c")

# os.makedirs("a1\\b1\\c1")

#

# # D:\Anaconda3\python.exe D:/C_cache/py/day22_os_json_re_etc_MoKuai/day22_1_os_json_re_etc_MoKuai.py

# #

# # Process finished with exit code 0

"""

# ------------------------------------------------------------

# # 11、os.removedirs

# # #  若目录为空，则删除，并递归到上一级目录，如若也为空，则删除，依此类推

# # # 分隔符有两种表达，linux：   "a/b/c"；       windows:"a1\\b1\\c1"

# ------------------------------------------------------------

"""

#

# import os

# # 当前文件夹下创建文件夹

# os.makedirs("a/b/c")

# os.makedirs("a1\\b1\\c1")

# # 对上面的文件夹删除

# os.removedirs("a/b/c")

# os.removedirs("a1\\b1\\c1")

#

# # D:\Anaconda3\python.exe D:/C_cache/py/day22_os_json_re_etc_MoKuai/day22_1_os_json_re_etc_MoKuai.py

# #

# # Process finished with exit code 0

"""

# ------------------------------------------------------------

# # 12、os.mkdir

# # # 生成单级目录；相当于shell中mkdir dirname

# # # 分隔符有两种表达，linux：   "a/b/c"；       windows:"a1\\b1\\c1"

# ------------------------------------------------------------

"""

#

# import os

# os.mkdir("mkfile")

#

# # D:\Anaconda3\python.exe D:/C_cache/py/day22_os_json_re_etc_MoKuai/day22_1_os_json_re_etc_MoKuai.py

# #

# # Process finished with exit code 0

"""

# ------------------------------------------------------------

# # 13、os.rmdir

# # #  删除单级空目录，若目录不为空则无法删除，报错；相当于shell中rmdir dirname

# # # 分隔符有两种表达，linux：   "a/b/c"；       windows:"a1\\b1\\c1"

# ------------------------------------------------------------

"""

import os

# 当前文件夹下创建文件夹

# os.mkdir("mkfile")

# 并在 mkfile1 文件夹中文一个文件

# os.mkdir("mkfile1")

# 删除上述创建的文件夹

# os.rmdir("mkfile")

# 这里会报错，因为文件目录不是空的

# os.rmdir("mkfile1")

#

# #

# # D:\Anaconda3\python.exe D:/C_cache/py/day22_os_json_re_etc_MoKuai/day22_1_os_json_re_etc_MoKuai.py

# #

# # Process finished with exit code 0

"""

# ------------------------------------------------------------

# # 14、os.listdir('dirname')

# # # 列出指定目录下的所有文件和子目录，包括隐藏文件，并以  列表方式打印

# ------------------------------------------------------------

"""

#

# import os

# print( os.listdir(os.curdir) )

# #

# # D:\Anaconda3\python.exe D:/C_cache/py/day22_os_json_re_etc_MoKuai/day22_1_os_json_re_etc_MoKuai.py

# # ['.idea', 'bin', 'day22_1_os_json_re_etc_MoKuai.py', 'mkfile', 'mkfile1']

# #

# # Process finished with exit code 0

"""

# ------------------------------------------------------------

# # 15、os.remove()

# # # 删除一个文件

# ------------------------------------------------------------

"""

#

# import os

# print(os.listdir(os.curdir))

# print(os.remove('a'))

# print(os.listdir(os.curdir))

#

# # D:\Anaconda3\python.exe D:/C_cache/py/day22_os_json_re_etc_MoKuai/day22_1_os_json_re_etc_MoKuai.py

# # ['.idea', 'a', 'bin', 'day22_1_os_json_re_etc_MoKuai.py', 'mkfile', 'mkfile1']

# # None

# # ['.idea', 'bin', 'day22_1_os_json_re_etc_MoKuai.py', 'mkfile', 'mkfile1']

# #

# # Process finished with exit code 0

"""

# ------------------------------------------------------------

# # 16、os.rename()

# # # rename    重命名文件/目录

# # # Python os.rename() 方法 | 菜鸟教程

# # # http://www.runoob.com/python/os-rename.html

# ------------------------------------------------------------

"""

#

# import os

#

# os.makedirs("a1\\b1")

# print("目录结构：", os.listdir(os.getcwd()))

#

# # ("a1\\b1")=====》("a1\\b22")

# os.rename("a1\\b1","a1\\b22")         # 会报错

# # a1===>>a22

# os.rename("a1","a22")

#

# print("目录结构：", os.listdir(os.getcwd()))

#

# # D:\Anaconda3\python.exe D:/C_cache/py/day22_os_json_re_etc_MoKuai/day22_1_os_json_re_etc_MoKuai.py

# # 目录结构： ['.idea', 'a', 'a1', 'bin', 'day22_1_os_json_re_etc_MoKuai.py', 'mkfile', 'mkfile1']

# # 目录结构： ['.idea', 'a', 'a22', 'bin', 'day22_1_os_json_re_etc_MoKuai.py', 'mkfile', 'mkfile1']

# #

# # Process finished with exit code 0

"""

# ------------------------------------------------------------

# # 17、os.stat('path/filename')  获取文件/目录信息

# # # 获取文件/目录信息

# ------------------------------------------------------------

"""

#

# import os

#

# print(os.listdir(os.getcwd()))

#

# os.mkdir("new")

# print(os.listdir(os.getcwd()))

#

# print(os.stat("new"))

# print(type(os.stat("new")) )

#

# # D:\Anaconda3\python.exe D:/C_cache/py/day22_os_json_re_etc_MoKuai/day22_1_os_json_re_etc_MoKuai.py

# # ['.idea', 'a', 'a22', 'bin', 'day22_1_os_json_re_etc_MoKuai.py']

# # ['.idea', 'a', 'a22', 'bin', 'day22_1_os_json_re_etc_MoKuai.py', 'new']

# # os.stat_result(st_mode=16895, st_ino=8725724278321625, st_dev=3088873539, st_nlink=1, st_uid=0, st_gid=0, st_size=0, st_atime=1533522093, st_mtime=1533522093, st_ctime=1533522093)

# # <class 'os.stat_result'>

# #

# # Process finished with exit code 0

"""

# ------------------------------------------------------------

# # 18、os.sep

# # #  输出操作系统特定的路径分隔符，win下为"\\"(双斜杆，是因为第一个是转义字符),Linux下为"/"

# ------------------------------------------------------------

"""

#

# import os

# print(os.sep)

#

# # D:\Anaconda3\python.exe D:/C_cache/py/day22_os_json_re_etc_MoKuai/day22_1_os_json_re_etc_MoKuai.py

# # \

# #

# # Process finished with exit code 0

"""

# ------------------------------------------------------------

# # 19、os.linesep

# # #  输出当前平台使用的行终止符，win下为"\r\n",Linux下为"\n"

# ------------------------------------------------------------

"""

#

# import os

#

# # 默认被编译器处理为“回车”

# print((os.linesep),type(os.linesep))

# # 默认被编译器处理为“回车”

# print(str(os.linesep))

# print(list(os.linesep))

#

# # D:\Anaconda3\python.exe D:/C_cache/py/day22_os_json_re_etc_MoKuai/day22_1_os_json_re_etc_MoKuai.py

# #

# #  <class 'str'>

# #

# #

# # ['\r', '\n']

# #

# # Process finished with exit code 0

"""

# ------------------------------------------------------------

# # 20、os.pathsep

# # #  输出用于分割文件路径的字符串 win下为;,Linux下为:

# ------------------------------------------------------------

"""

#

# import os

# print(os.pathsep)

#

# # D:\Anaconda3\python.exe D:/C_cache/py/day22_os_json_re_etc_MoKuai/day22_1_os_json_re_etc_MoKuai.py

# # ;

# #

# # Process finished with exit code 0

"""

# ------------------------------------------------------------

# # 21、os.name

# # #  输出字符串指示当前使用平台。win->'nt'; Linux->'posix'

# ------------------------------------------------------------

"""

#

# import os

# print(os.name)

#

# # D:\Anaconda3\python.exe D:/C_cache/py/day22_os_json_re_etc_MoKuai/day22_1_os_json_re_etc_MoKuai.py

# # nt

# #

# # Process finished with exit code 0

"""

# ------------------------------------------------------------

# # 22、os.system("bash command")

# # # 运行shell命令，直接显示

# # # 输出的结果和在控制台上运行的效果是一样的，只不过是用到了python os的模块来完成。

# # # 分享python os.system一点心得 - 老王python - 博客园

# # # https://www.cnblogs.com/wanpython/archive/2010/12/15/1906468.html

# ------------------------------------------------------------

"""

#

# import os

# print( os.system("bash command") )

# os.system("ping www.baidu.com")

#

# 结果是乱码的原因是因是pycharm中py的编码格式是 utf-8 的关系

# # D:\Anaconda3\python.exe D:/C_cache/py/day22_os_json_re_etc_MoKuai/day22_1_os_json_re_etc_MoKuai.py

# # 'bash' �����ڲ����ⲿ���Ҳ���ǿ����еij���

# # ���������ļ���

# # 1

# #

# # ���� Ping www.a.shifen.com [14.215.177.38] ���� 32 �ֽڵ�����:

# # ���� 14.215.177.38 �Ļظ�: �ֽ�=32 ʱ��=11ms TTL=56

# # ���� 14.215.177.38 �Ļظ�: �ֽ�=32 ʱ��=12ms TTL=56

# # ���� 14.215.177.38 �Ļظ�: �ֽ�=32 ʱ��=12ms TTL=56

# # ���� 14.215.177.38 �Ļظ�: �ֽ�=32 ʱ��=11ms TTL=56

# #

# # 14.215.177.38 �� Ping ͳ����Ϣ:

# #     ���ݰ�: �ѷ��� = 4���ѽ��� = 4����ʧ = 0 (0% ��ʧ)��

# # �����г̵Ĺ���ʱ��(�Ժ���Ϊ��λ):

# #     ��� = 11ms��� = 12ms��ƽ�� = 11ms

# #

# # Process finished with exit code 0

"""

# ------------------------------------------------------------

# # 23、os.environ

# # # 获取系统环境变量

# # # 当前系统的环境变量的查看方式：

# # # win7电脑怎样修改环境变量_百度经验

# # # https://jingyan.baidu.com/article/b24f6c82cba6dc86bfe5da9f.html

# ------------------------------------------------------------

"""

#

# import os

# print(os.path)

# print(os.environ)

#

# # D:\Anaconda3\python.exe D:/C_cache/py/day22_os_json_re_etc_MoKuai/day22_1_os_json_re_etc_MoKuai.py

# # <module 'ntpath' from 'D:\\Anaconda3\\lib\\ntpath.py'>

# # environ({'ALLUSERSPROFILE': 'C:\\ProgramData', 'APPDATA': 'C:\\Users\\Roth\\AppData\\Roaming', 'COMMONPROGRAMFILES': 'C:\\Program Files\\Common Files', 'COMMONPROGRAMFILES(X86)': 'C:\\Program Files (x86)\\Common Files', 'COMMONPROGRAMW6432': 'C:\\Program Files\\Common Files', 'COMPUTERNAME': 'ROTH-PC', 'COMSPEC': 'C:\\Windows\\system32\\cmd.exe', 'FP_NO_HOST_CHECK': 'NO', 'HOMEDRIVE': 'C:', 'HOMEPATH': '\\Users\\Roth', 'LOCALAPPDATA': 'C:\\Users\\Roth\\AppData\\Local', 'LOGONSERVER': '\\\\ROTH-PC', 'MOZ_PLUGIN_PATH': 'D:\\Program Files (x86)\\Foxit Software\\Foxit Reader\\plugins\\', 'NUMBER_OF_PROCESSORS': '4', 'OS': 'Windows_NT', 'PATH': 'D:\\Anaconda3\\DLLs;D:\\Program Files (x86)\\Python27;D:\\Anaconda3;D:\\Anaconda3\\Library\\mingw-w64\\bin;D:\\Anaconda3\\Library\\usr\\bin;D:\\Anaconda3\\Library\\bin;D:\\Anaconda3\\Scripts;C:\\Windows\\system32;C:\\Windows;C:\\Windows\\System32\\Wbem;C:\\Windows\\System32\\WindowsPowerShell\\v1.0\\;C:\\Program Files (x86)\\Intel\\OpenCL SDK\\3.0\\bin\\x86;C:\\Program Files (x86)\\Intel\\OpenCL SDK\\3.0\\bin\\x64;C:\\Program Files (x86)\\Calibre2\\;C:\\Program Files\\Microsoft VS Code\\bin', 'PATHEXT': '.COM;.EXE;.BAT;.CMD;.VBS;.VBE;.JS;.JSE;.WSF;.WSH;.MSC', 'PROCESSOR_ARCHITECTURE': 'AMD64', 'PROCESSOR_IDENTIFIER': 'Intel64 Family 6 Model 69 Stepping 1, GenuineIntel', 'PROCESSOR_LEVEL': '6', 'PROCESSOR_REVISION': '4501', 'PROGRAMDATA': 'C:\\ProgramData', 'PROGRAMFILES': 'C:\\Program Files', 'PROGRAMFILES(X86)': 'C:\\Program Files (x86)', 'PROGRAMW6432': 'C:\\Program Files', 'PSMODULEPATH': 'C:\\Windows\\system32\\WindowsPowerShell\\v1.0\\Modules\\', 'PUBLIC': 'C:\\Users\\Public', 'PYCHARM_HOSTED': '1', 'PYCHARM_MATPLOTLIB_PORT': '49727', 'PYTHONIOENCODING': 'UTF-8', 'PYTHONPATH': 'D:\\Program Files (x86)\\PyCharm 2018.1.3\\helpers\\pycharm_matplotlib_backend;D:\\C_cache\\py\\day22_os_json_re_etc_MoKuai', 'PYTHONUNBUFFERED': '1', 'SESSIONNAME': 'Console', 'SYSTEMDRIVE': 'C:', 'SYSTEMROOT': 'C:\\Windows', 'TEMP': 'C:\\Users\\Roth\\AppData\\Local\\Temp', 'TMP': 'C:\\Users\\Roth\\AppData\\Local\\Temp', 'USERDOMAIN': 'Roth-PC', 'USERNAME': 'Roth', 'USERPROFILE': 'C:\\Users\\Roth', 'WINDIR': 'C:\\Windows'})

# #

# # Process finished with exit code 0

"""

# ------------------------------------------------------------

# # 24、os.path.split(path)

# # # 将path分割成目录和文件名二元组返回

# ------------------------------------------------------------

"""

#

# import os

# # 实际上，__file__指的就是当前的执行文件名，只是在pycharm编译器中，编译器自动添加了执行文件的前面的路径

# print(os.path.split(__file__))

#

# print(os.path.split(os.path.dirname(__file__)))

# print(os.path.split(os.path.abspath(__file__)))

#

# print(os.path.split("D:\C_cache\py\day22_os_json_re_etc_MoKuai\day22_1_os_json_re_etc_MoKuai.py"))

# print(os.path.split(r"D:\C_cache\py\day22_os_json_re_etc_MoKuai\day22_1_os_json_re_etc_MoKuai.py"))  # 正则表达式

#

# # D:\Anaconda3\python.exe D:/C_cache/py/day22_os_json_re_etc_MoKuai/day22_1_os_json_re_etc_MoKuai.py

# # ('D:/C_cache/py/day22_os_json_re_etc_MoKuai', 'day22_1_os_json_re_etc_MoKuai.py')

# # ('D:/C_cache/py', 'day22_os_json_re_etc_MoKuai')

# # ('D:\\C_cache\\py\\day22_os_json_re_etc_MoKuai', 'day22_1_os_json_re_etc_MoKuai.py')

# # ('D:\\C_cache\\py\\day22_os_json_re_etc_MoKuai', 'day22_1_os_json_re_etc_MoKuai.py')

# # ('D:\\C_cache\\py\\day22_os_json_re_etc_MoKuai', 'day22_1_os_json_re_etc_MoKuai.py')

# #

# # Process finished with exit code 0

# #

"""

# ------------------------------------------------------------

# # 25、os.path.basename(path)

# # # 返回path最后的文件名。如何path以／或\结尾，那么就会返回空值。

# # # 即os.path.split(path)的第二个元素

# ------------------------------------------------------------

"""

#

# import os

# print(os.path.split(__file__))

# print(os.path.basename(__file__))

#

# print(os.path.split(os.path.dirname(__file__)))

# print(os.path.basename(os.path.dirname(__file__)))

#

#

# print(os.path.split(os.path.abspath(__file__)))

# print(os.path.basename(os.path.abspath(__file__)))

#

# print(os.path.split(r"D:\C_cache\py\day22_os_json_re_etc_MoKuai\day22_1_os_json_re_etc_MoKuai.py"))  # 正则表达式

# print(os.path.basename(r"D:\C_cache\py\day22_os_json_re_etc_MoKuai\day22_1_os_json_re_etc_MoKuai.py"))  # 正则表达式

#

# # D:\Anaconda3\python.exe D:/C_cache/py/day22_os_json_re_etc_MoKuai/day22_1_os_json_re_etc_MoKuai.py

# # ('D:/C_cache/py/day22_os_json_re_etc_MoKuai', 'day22_1_os_json_re_etc_MoKuai.py')

# # day22_1_os_json_re_etc_MoKuai.py

# # ('D:/C_cache/py', 'day22_os_json_re_etc_MoKuai')

# # day22_os_json_re_etc_MoKuai

# # ('D:\\C_cache\\py\\day22_os_json_re_etc_MoKuai', 'day22_1_os_json_re_etc_MoKuai.py')

# # day22_1_os_json_re_etc_MoKuai.py

# # ('D:\\C_cache\\py\\day22_os_json_re_etc_MoKuai', 'day22_1_os_json_re_etc_MoKuai.py')

# # day22_1_os_json_re_etc_MoKuai.py

# #

# # Process finished with exit code 0

"""

# ------------------------------------------------------------

# # 26、os.path.exists(path)

# # # 如果path存在，返回True；如果path不存在，返回False

# ------------------------------------------------------------

"""

#

# import os

# print(os.path.exists("D:\C_cache\py\day22_os_json_re_etc_MoKuai\day22_1_os_json_re_etc_MoKuai.py"))

# print(os.path.exists(r"D:\C_cache\py\day22_os_json_re_etc_MoKuai\day22_1_os_json_re_etc_MoKuai.py"))  # 正则表达式

# # txt文件是不存在的

# print(os.path.exists(r"D:\C_cache\py\day22_os_json_re_etc_MoKuai\day22_os_json_re_etc_MoKuai.txt"))  # 正则表达式

#

# # D:\Anaconda3\python.exe D:/C_cache/py/day22_os_json_re_etc_MoKuai/day22_1_os_json_re_etc_MoKuai.py

# # True

# # True

# # False

# #

# # Process finished with exit code 0

"""

# ------------------------------------------------------------

# # 27、os.path.isabs(path)

# # # 如果path是绝对路径，返回True

# ------------------------------------------------------------

"""

#

# import os

#

# print("__file__                 ",os.path.isabs(__file__))

# print("dirname(__file__)        ",os.path.isabs(os.path.dirname(__file__)))

# print("abspath(__file__)        ",os.path.isabs(os.path.abspath(__file__)))

# print("os.curdir                ",os.path.isabs(os.curdir))

# print("输入已存在的文件路径     ",os.path.isabs(r"D:\C_cache\py\ \

# day22_os_json_re_etc_MoKuai\day22_1_os_json_re_etc_MoKuai.py"))  # 正则表达式

# print("输入‘不’存在的文件路径 ",os.path.isabs(r"D:\C_cache\py\ \

# day22_os_json_re_etc_MoKuai\day22_os_json_re_etc_MoKuai.txt"))  # 正则表达式

#

#

#

# # D:\Anaconda3\python.exe D:/C_cache/py/day22_os_json_re_etc_MoKuai/day22_1_os_json_re_etc_MoKuai.py

# # __file__                  True

# # dirname(__file__)         True

# # abspath(__file__)         True

# # os.curdir                 False

# # 输入已存在的文件路径      True

# # 输入‘不’存在的文件路径  True

# #

# # Process finished with exit code 0

"""

# ------------------------------------------------------------

# # 28、os.path.isfile(path)

# # # 如果path是一个存在的文件，返回True。否则返回False

# ------------------------------------------------------------

"""

#

# import os

# print("输入已存在的文件路径     ",os.path.isfile("D:\C_cache\py\day22_os_json_re_etc_MoKuai\day22_1_os_json_re_etc_MoKuai.py"))

#

# print("输入已存在的文件路径     ",os.path.isfile(r"D:\C_cache\py\day22_os_json_re_etc_MoKuai\day22_1_os_json_re_etc_MoKuai.py"))  # 正则表达式

# # 这个是后缀名不对，因此才不存在

# print("输入‘不’存在的文件路径 ",os.path.isfile(r"D:\C_cache\py\day22_os_json_re_etc_MoKuai\day22_os_json_re_etc_MoKuai.txt"))  # 正则表达式

#

# # 这个是一个文件夹

# print(os.path.isfile(r"D:\C_cache\py\day22_os_json_re_etc_MoKuai"))  # 正则表达式

# # 已经存在的文件

# print(os.path.isfile(r"D:\C_cache\py\day22_os_json_re_etc_MoKuai\a"))  # 正则表达式

# print(os.path.isfile(r"D:\C_cache\py\day22_os_json_re_etc_MoKuai\b.txt"))  # 正则表达式

# print(os.path.isfile(r"D:\C_cache\py\day22_os_json_re_etc_MoKuai\day22_2_os_json_re_etc_MoKuai.py"))  # 正则表达式

#

# # D:\Anaconda3\python.exe D:/C_cache/py/day22_os_json_re_etc_MoKuai/day22_1_os_json_re_etc_MoKuai.py

# # 输入已存在的文件路径      True

# # 输入已存在的文件路径      True

# # 输入‘不’存在的文件路径  False

# # False

# # True

# # True

# # True

# #

# # Process finished with exit code 0

"""

# ------------------------------------------------------------

# # 29、os.path.isdir(path)

# # # 如果path是一个存在的目录，则返回True。否则返回False

# ------------------------------------------------------------

"""

#

# import os

#

# # 这个是一个存在的文件夹

# print(os.path.isdir(r"D:\C_cache\py\day22_os_json_re_etc_MoKuai"))  # 正则表达式

#

# # 这个是一个‘不’存在的文件夹

# print(os.path.isdir(r"D:\C_cache\py\day22_os_json_re_etc_MoKuai99999"))  # 正则表达式

#

#

# # 已经存在的文件

# print(os.path.isdir(r"D:\C_cache\py\day22_os_json_re_etc_MoKuai\a"))  # 正则表达式

# print(os.path.isdir(r"D:\C_cache\py\day22_os_json_re_etc_MoKuai\b.txt"))  # 正则表达式

# print(os.path.isdir(r"D:\C_cache\py\day22_os_json_re_etc_MoKuai\day22_2_os_json_re_etc_MoKuai.py"))  # 正则表达式

#

#

# # D:\Anaconda3\python.exe D:/C_cache/py/day22_os_json_re_etc_MoKuai/day22_1_os_json_re_etc_MoKuai.py

# # True

# # False

# # False

# # False

# # False

# #

# # Process finished with exit code 0

"""

# ------------------------------------------------------------

# # 30、os.path.join(path1[, path2[, ...]])

# # # 将多个路径组合后返回，第一个绝对路径之前的参数将被忽略

# ------------------------------------------------------------

目录结构：

D:\C_cache\py\day22_os_json_re_etc_MoKuai\a22\b1

==>>下面是演示拼接上面的目录

其中，方式一是不推荐使用的，推荐使用方式二

"""

#

# import os

# # 方式一

# tmp = "D:\\C_cache\py\\day22_os_json_re_etc_MoKuai" + "\\" + "a22\\b1"

# # 方式二

# a = "D:\\C_cache\py\\day22_os_json_re_etc_MoKuai"

# b = "a22\\b1"

# c = os.path.join(a,b)

#

# print("字符串加法处理：  ",tmp)

# print("os.path.join方法: ",c)

#

# #

# # D:\Anaconda3\python.exe D:/C_cache/py/day22_os_json_re_etc_MoKuai/day22_1_os_json_re_etc_MoKuai.py

# # 字符串加法处理：   D:\C_cache\py\day22_os_json_re_etc_MoKuai\a22\b1

# # os.path.join方法:  D:\C_cache\py\day22_os_json_re_etc_MoKuai\a22\b1

# #

# # Process finished with exit code 0

"""

# ------------------------------------------------------------

# # 31、os.path.getatime(path)

# # # 返回path所指向的文件或者目录的最后存取时间

# ------------------------------------------------------------

"""

#

# import os

#

# print(os.path.getatime("D:\\C_cache\\py\\day22_os_json_re_etc_MoKuai\\b.txt"))

# print(os.path.getatime("D:\\C_cache\\py\\day22_os_json_re_etc_MoKuai\\a22"))

#

# # D:\Anaconda3\python.exe D:/C_cache/py/day22_os_json_re_etc_MoKuai/day22_1_os_json_re_etc_MoKuai.py

# # 1533538486.7024333

# # 1533521630.9828572

# #

# # Process finished with exit code 0

"""

# ------------------------------------------------------------

# # 32、os.path.getmtime(path)

# # # 返回path所指向的文件或者目录的最后修改时间

# ------------------------------------------------------------

"""

#

# import os

#

# print(os.path.getmtime("D:\\C_cache\\py\\day22_os_json_re_etc_MoKuai\\b.txt"))

# print(os.path.getmtime("D:\\C_cache\\py\\day22_os_json_re_etc_MoKuai\\a22"))

#

# # D:\Anaconda3\python.exe D:/C_cache/py/day22_os_json_re_etc_MoKuai/day22_1_os_json_re_etc_MoKuai.py

# # 1533538486.7024333

# # 1533521630.9828572

# #

# # Process finished with exit code 0