#!/usr/bin/env python

 # _*_ coding: UTF-8 _*_

 # Author:taoke

 import sys

 print(sys.path)#打印环境变量

 print(sys.argv[0])#当前文件相对路径,sys.argv是一个列表，第一个元素为程序本身的相对路径，之后的为程序运行是的输入参数

 import os

 #cmd_res= os.system("dir")#执行命令不保存结果

 cmd_res = os.popen("dir").read()#保存命令执行的结果并返回保存地址

 print("-->",cmd_res)

 os.mkdir("new_dir")#创建一个目录

 #!/usr/bin/env python

 # _*_ coding: UTF-8 _*_

 # Author:taoke

 str = "我爱北京*"

 str_endode = str.encode("utf-8")

 str_endode_decode = str_endode.decode("utf-8")

 print(str,type(str))

 print(str_endode,type(str_endode))

 print(str_endode_decode,type(str_endode_decode))

运行结果：

我爱北京* <class 'str'>

b'\xe6\x88\x91\xe7\x88\xb1\xe5\x8c\x97\xe4\xba\xac\xe5\xa4\xa9\xe5\xae\x89\xe9\x97\xa8' <class 'bytes'>

我爱北京* <class 'str'>

 #!/usr/bin/env python

 # _*_ coding: UTF-8 _*_

 # Author:taoke

 names = ["xiaoming","xiaohong","xiaohei","xiaoxiao"]

 print(names)

 print(names[0],names[2])

 print(names[1:3])#顾头不顾尾，切片

 names.append("xiaobingbing")

 print(names)

 names.insert(1,"renma")

 print(names)

#!/usr/bin/env python

# _*_ coding: UTF-8 _*_

# Author:taoke

import copy

names = ["xiaoming","xiaohong",["Jack","Toms"],"xiaohei","xiaoxiao"]

names2 = names.copy()#浅copy

names3 = copy.copy(names)#浅copy

names4 = copy.deepcopy(names)#深copy

names[2][0] = "JACK"

print(names)

print(names2)

print(names3)

print(names4)

运行结果：
['xiaoming', 'xiaohong', ['JACK', 'Toms'], 'xiaohei', 'xiaoxiao']

['xiaoming', 'xiaohong', ['JACK', 'Toms'], 'xiaohei', 'xiaoxiao']

['xiaoming', 'xiaohong', ['JACK', 'Toms'], 'xiaohei', 'xiaoxiao']

['xiaoming', 'xiaohong', ['Jack', 'Toms'], 'xiaohei', 'xiaoxiao']