Module OS in Python

 

Module OS in Python

module OS needs to be import for the same

• How to create directory.  os.makedirs("directory_name")

Example :

• if directory does not exist, it will create directory

 #program

 import os
 os.makedirs("Sample_Directory")
 print("Directory Sample_Directory created successfully")

 #output

 Directory Sample_Directory created successfully

• if directory already exist, it will throw File_Exists_Error

 #program

 import os
 os.makedirs("Sample_Directory")
 print("Directory Sample_Directory created successfully")

 #output

 Traceback (most recent call last):
   File "C:/Self_Practice_Er_M_S_Dandyan/Python/Pycharm/xml/main.py", line 4, in <module>
     os.makedirs("Sample_Directory")    
 FileExistsError: [WinError 183] Cannot create a file when that file already exists: 'Sample_Directory'

• How to get current directory path.   os.getcwd()

 #program

 import os
 path = os.getcwd()
 print(path)

 #output

 C:\Self_Practice_Er_M_S_Dandyan\Python\Pycharm\xml

• How to check directory / file exists of not.   os.path.exists(directory/ file name)

• if directory or file exists, path.exists will return True

• if directory or file does not exists, path.exists will return False

 #program

 import os
 Exist = os.path.exists("Sample_Directory")
 print("Sample_Directory Exist : ", Exist)

 Exist = os.path.exists("Sample_Directory/file.txt")
 print("Sample_Directory/file.txt Exists : ", Exist)

 #output

 Sample_Directory Exist :  True
 Sample_Directory/file.txt Exists :  False

• How to delete directory.   os.rmdir(directory_name)

 
 #program

 import os
 Exist = os.path.exists("Sample_Directory")
 print("Sample_Directory Exist : ", Exist)

 os.rmdir("Sample_Directory")
 Exist = os.path.exists("Sample_Directory")
 print("Sample_Directory Exist : ", Exist)
 if Exist == False :
     print("directory deleted succesfully")

#output

 Sample_Directory Exist :  True
 Sample_Directory Exist :  False
 directory deleted succesfully

• How to delete file.     os.remove("file_name")

 #program

 import os
 Exist = os.path.exists("my_file.txt")
 print("my_file.txt Exist : ", Exist)

 os.remove("my_file.txt")
 Exist = os.path.exists("my_file.txt")
 print("my_file.txt Exist : ", Exist)
 if Exist == False :
     print("my_file.txt deleted successfully")

 #output

 my_file.txt Exist :  True
 my_file.txt Exist :  False
 my_file.txt deleted successfully