- 1 year ago
I want to backup file when the file is replaced by the same file
If you want to create a backup of a file whenever it gets replaced with the same file, you can achieve this in Python using a combination of file system monitoring and file handling. You can use the watchdog
library for monitoring file system events and the shutil
library for handling file operations.
Here's an example of how you can implement this:
pythonimport os
import shutil
import time
from watchdog.observers import Observer
from watchdog.events import FileSystemEventHandler
# Define the directory to monitor and the backup directory
directory_to_monitor = "path/to/directory"
backup_directory = "path/to/backup/directory"
# Define a custom event handler for file system events
class MyHandler(FileSystemEventHandler):
def on_modified(self, event):
if event.is_directory:
return
# Check if the file was replaced with the same file
if os.path.exists(event.src_path) and os.path.exists(event.dest_path) and os.path.samefile(event.src_path, event.dest_path):
# Backup the file
backup_file(event.src_path)
def backup_file(file_path):
# Create a backup file name based on the original file name
backup_file_name = os.path.basename(file_path) + ".backup"
# Copy the file to the backup directory
shutil.copy(file_path, os.path.join(backup_directory, backup_file_name))
if __name__ == "__main__":
# Start the file system observer
event_handler = MyHandler()
observer = Observer()
observer.schedule(event_handler, path=directory_to_monitor, recursive=True)
observer.start()
try:
while True:
time.sleep(1)
except KeyboardInterrupt:
observer.stop()
observer.join()
In this script, we use the watchdog
library to monitor the specified directory (directory_to_monitor
) for file system events. When a file is modified (e.g., replaced with the same file), the on_modified
method of the custom event handler is called. Inside this method, we check if the source file and destination file are the same (using os.path.samefile
). If they are the same, we call the backup_file
function to create a backup of the file in the specified backup directory (backup_directory
). The shutil.copy
function is used to copy the file to the backup directory.
Please make sure to install the watchdog
library using pip install watchdog
before running the script. Also, replace "path/to/directory"
and "path/to/backup/directory"
with the actual paths of the directory you want to monitor and the backup directory, respectively.