Python file Operation review A

Review file operations

Print "Current path:" Print os.getcwd () print "Determines whether it is a file:" Print Os.path.isfile (OS.GETCWD ()) print "is is a directory: "Print Os.path.isdir (OS.GETCWD ()) Print os.system (" ls ") print" Determines if it is an absolute path: "Print Os.pat H.isabs ("excp01.py") print "verifies that the given path is really saved:" Print os.path.exists ("/users/zhouhaijun") print "returns a directory for a path        Name and file name "Print os.path.split ("/users/zhouhaijun ") print" Detach file name with extension "Print os.path.splitext (" Tmp1.dat ") Print "Finds all the files in a directory and writes" Ostest "for Root,dis,files in Os.walk ("/users/zhouhaijun/desktop/hhhhh/ostest "): For name in Files:print Name,root,os.path.join (Root,name) with open (Os.path. Join (Root,name), "W") as Fp:fp.write ("good!        Liwen \ n Learn Walk "command") print "ok!" Print "If the file name in a directory contains a DAT suffix name, append a line to it" I found it!  "For Root,dirs,files in Os.walk ("/users/zhouhaijun/desktop/hhhhh/ostest "):          For name in Files:suffix = Os.path.splitext (Os.path.join (Root,name)) [-1] if suffi                        X in "Dat": the Print name with open (Os.path.join (root,name), "a") as FP: Fp.write ("\ n i found it!!! ") print" Modified: "Os.system (" Cd/users/zhouhaijun/desktop/hhhhh/ostest ") print" Get Current path "Os.chdi R ("/users/zhouhaijun/desktop/hhhhh/ostest") print "Get current directory:" Print OS.GETCWD () for line in FILEINPUT.I Nput ("dd", inplace = 1): line = Line.replace ("Walk", "\ n review fileinput.input command") Print line print            "Seek function:" With open ("DD", "r+") as F:old = F.read () print "content is:", Old F.seek (2) F.write ("Liwen is very GOOGD!!!!")

Results:

Current path:
/users/zhouhaijun/pycharmprojects/test/pythontest/dome01
Determine if it is a file:
False
is a directory:
True
monday.py
init. py
Contect_list.txt
excp01.py
one_01.py
Phone.dat
Test.kpl
Tmp1.dat
Tmp2.dat
0
Determine if it is an absolute path:
False
Verify that the given path is really saved:
True
Returns the directory name and file name of a path
('/users ', ' Zhouhaijun ')
Detach file name and extension
(' Tmp1 ', '. dat ')
Find all the files in a directory and write "Ostest" to each file
Dd/users/zhouhaijun/desktop/hhhhh/ostest/users/zhouhaijun/desktop/hhhhh/ostest/dd
Liwen.dat/users/zhouhaijun/desktop/hhhhh/ostest/users/zhouhaijun/desktop/hhhhh/ostest/liwen.dat
Ok!
If the file name in a directory contains a DAT suffix name, append a line to it "I found it!"
Dd
What to modify:
Get current path
Get current directory:
/users/zhouhaijun/desktop/hhhhh/ostest
Seek function:
Content is: good! Liwen

Learn
Review fileinput.input command commands

I found it!!!

Python file Operation review A