os.getcwd()
Role: Get the current path
usage:
>>> print(os.getcwd())
os.chdir()
Role: Change the current working directory
usage:
>>> print(os.getcwd())
/
>>> os.chdir(“/usr/local”)
>>> print(os.getcwd())
/usr/local
# # Return to parent directory
>>> os.chdir(“..”)
os.mkdirs ()
Role: Create a recursive directory
usage:
>>> os.makedirs ( "linux / hundreds")
os.mkdir()
Role: New directory, can only build one
usage:
>>> os.mkdir(“linux”)
os.removedirs()
Role: delete the specified directory, if the specified directory is empty deleted, if the parent directory is also empty also removed if the parent directory is not empty is not deleted
usage:
>>> os.removedirs(“centos/linux”)
os.rmdir ()
Role: Only single-level directory delete empty folders
usage:
>>> os.rmdir(“linux”)
os.listdir ()
Role: the specified folder lists all of the following folders and files, including hidden files , to the list of ways to print out
usage:
>>> print(os.listdir(“/usr/local/”))
os.remove ()
Role: delete the specified file
usage:
>>> os.remove(“/usr/local/fan.sh”)
os.rename()
Role: Edit folder name or file name
usage:
>>> os.rename(“hehe.sh”,”xixi.sh”)
os.state ()
Role: View details of a file
usage:
>>> print(os.state(“/usr/local/hehe.sh”))
# There timestamp issue (st_mtime = 1528552906)
# Converted by the time module
# Time_local = time.localtime (1528552906) # time stamp is converted to a structured
#print (time.strftime ( "% Y-% m-% d% X", time_local)) # structured into a string of time period
os.sep
The role of output current operating system path separator (Linux is "/", Windows is "\")
usage:
>>> print(os.sep)
os.system()
Role: Run the terminal command
usage:
>>> os.system ( "cd / usr / local") # take such output results of less than
-----------------------------------------------------------------------------------------
>>> output = os.popen('cd / && ls')
>>> print (output.read ()) # output back to the car
-----------------------------------------------------------------------------------------
>>> date1 = commands.getstatusoutput("date +'%Y-%m-%d-%H-%M'")
>>> date = str (date1 [1]) # correct result output
os.path.exists()
Action: determining whether there is a path exists is True, False is absent
usage:
>>> print(os.path.exists(“/usr/local/”))
os.path.isfile()
Role: to determine whether a file exists, exists is True, otherwise False
usage:
>>> print(os.path.isfile(“/usr/local/hehe.sh”))
os.path.isdir ()
Role: to determine whether there is a file directory, presence is True, it does not exist to False
usage:
>>> print(os.path.isdir(“/usr/local/”))
os.path.join()
Role: Path splicing (important)
usage:
>>> a=”/usr/”
>>> b=”local/hehe.sh”
>>> print(os.path.join(a,b))
