Python development of file manipulation usage examples

import re
import os
import time
# Image file path
image_path = 'E:\\test\\20130627_140132Hongten.jpg'
# folder path
dir_path = 'E:\\test\\hongten'
# File Path
file_abs_path = 'E:\\test\\'
# Get the current workspace directory
def getcwd():
  return ()
# Get all files and folders under the specified folder
# If the specified folder does not exist, return the corresponding message
def listdir(dir_path):
  if (dir_path):
    return (dir_path)
  else:
    return 'Catalog'+ dir_path + 'Does not exist'
def isfile(file_path):
  if (file_path):
    return (file_path)
  else:
    return 'Documentation'+ dir_path + 'Does not exist'
if __name__ == '__main__':
  print('The current workspace is：{0}'.format(getcwd()))
  print('Files and directories under the current workspace:',listdir(getcwd()))
  print('#' * 40)
  print(listdir('c:\\test'))
  print('#' * 40)
  print(isfile(image_path))
  print('#' * 40)
  array = (image_path)
  print(array)
  #File Full Name: 20130627_140132Hongten.jpg
  file_full_name = array[1]
  name = (file_full_name)
  # File name: 20130627_140132Hongten
  file_name = name[0]
  #File extension: .jpg
  file_ext = name[1]
  print('Full name of document:{0},filename：{1},File Suffix：{2}'.format(file_full_name,file_name,file_ext))
  print('#' * 40)
  #Creating empty folders
  #('E:\\mydir')
  # Create multi-level catalogs
  #(r'E:\\bb\\cc')
  print('#' * 40)
  # Open a file
  fp = open(file_abs_path,'w+')
  #print('Reading file: first line of {0}: {1}'.format(file_abs_path,()))
  # treats each line of the file as a member of a list and returns the list. it's actually done internally by calling readline() in a loop.
  # If the size parameter is supplied, size is an indication of the total length of the read content, i.e. only a part of the file may be read.
  #print('Reading file: {0} all contents: {1}'.format(file_abs_path,()))
  content = 'this is a test message!!\ngood boy!\ngogo......\nhello,I\'m Hongten\nwelcome to my space!'
  (content)
  ()
  ()
  fp = open(file_abs_path,'r+')
  print('Read file：{0}All content：{1}'.format(file_abs_path,()))

Python 3.3.2 (v3.3.2:d047928ae3f6, May 16 2013, 00:03:43) [MSC v.1600 32 bit (Intel)] on win32
Type "copyright", "credits" or "license()" for more information.
>>> ================================ RESTART ================================
>>> 
The current workspace is：D:\Python33\workspace
Files and directories under the current workspace： ['', 'test_annotation.py', 'test_class.py', 'test_exception.py', 'test_exit.py', 'test_file.py', 'test_getA.py', 'test_hello.py', 'test_import.py', 'test_input.py', 'test_loops.py', 'test_myclass.py', 'test_os.py', 'test_range.py', 'test_str.py', 'test_string.py', 'test_while.py', 'test_with.py']
########################################
catalogsc:\testnon-existent
########################################
True
########################################
('E:\\test', '20130627_140132Hongten.jpg')
Full name of document:20130627_140132Hongten.jpg,filename：20130627_140132Hongten,File Suffix：.jpg
########################################
########################################
Read file：E:\test\All content：['this is a test message!!\n', 'good boy!\n', 'gogo......\n', "hello,I'm Hongten\n", 'welcome to my space!']
>>>