Please note, this is a STATIC archive of website www.w3resource.com from 19 Jul 2022, cach3.com does not collect or store any user information, there is no "phishing" involved.
w3resource

Python: Create a file and write some text and rename the file name

Python Operating System Services: Exercise-7 with Solution

Write a Python program to create a file and write some text and rename the file name.

Sample Solution:

Python Code :

import glob
import os
with open('a.txt', 'w') as f:
   f.write('Python program to create a symbolic link and read it to decide the original file pointed by the link.')
print('\nInitial file/dir name:', os.listdir())
with open('a.txt', 'r') as f:
   print('\nContents of a.txt:', repr(f.read()))   
os.rename('a.txt', 'b.txt')
print('\nAfter renaming initial file/dir name:', os.listdir())
with open('b.txt', 'r') as f:
   print('\nContents of b.txt:', repr(f.read()))

Sample Output:

Initial file/dir name: ['main.py', 'a.txt']

Contents of a.txt: 'Python program to create a symbolic link and read it to decide the original file pointed by the link.'

After renaming initial file/dir name: ['main.py', 'b.txt']

Contents of b.txt: 'Python program to create a symbolic link and read it to decide the original file pointed by the link.'

Python Code Editor:

Have another way to solve this solution? Contribute your code (and comments) through Disqus.

Previous: Write a Python program to create a symbolic link and read it to decide the original file pointed by the link.
Next: Write a Python program to find the parent’s process id, real user ID of the current process and change real user ID.

What is the difficulty level of this exercise?

Test your Programming skills with w3resource's quiz.



Python: Tips of the Day

Find current directory and file's directory:

To get the full path to the directory a Python file is contained in, write this in that file:

import os 
dir_path = os.path.dirname(os.path.realpath(__file__))

(Note that the incantation above won't work if you've already used os.chdir() to change your current working directory, since the value of the __file__ constant is relative to the current working directory and is not changed by an os.chdir() call.)

To get the current working directory use

import os
cwd = os.getcwd()

Documentation references for the modules, constants and functions used above:

  • The os and os.path modules.
  • The __file__ constant
  • os.path.realpath(path) (returns "the canonical path of the specified filename, eliminating any symbolic links encountered in the path")
  • os.path.dirname(path) (returns "the directory name of pathname path")
  • os.getcwd() (returns "a string representing the current working directory")
  • os.chdir(path) ("change the current working directory to path")

Ref: https://bit.ly/3fy0R6m