How To Detect File Changes with Python (and send notification)

Learn how to detect when a file has changed with a Python program that automatically executes on an interval with a cronjob. Although this tutorial video shows you how to watch PDFs for changes, the concept of comparing file hashes (specifically a SHA1 hash function) holds true for most other files, both local and at a remote URL.

#python #pushsafer

[bondkebs]

Hello how can I use python to monitor for changes on a specific table on postgreSQL and and save that change to csv file . The file should just be touch if and only if the table was updated or some rows were deleted.Thank you

[lkiller]

Great Video, Very expanatory and a very good idea indead. Subscribed Right away!

[saireoflight]

That's a pretty Good Idea for checking Update like Hashing as I need to check an overwriting file for update on a periodical basis.
Thanks.

[siwarbgd]

Hi Tony,

Can we detect changes in DataBase?

[alexhogg]

How would you adjust this if you wanted to check PDF updates for every fund in your portfolio?

[Dwika]

hi great video btw you really helped me a lot. Its very beginner friendly and you explain it well. I would like to ask tho how would you run this code online on a platform like heroku or anything similar because if you do this you would have to run your pc 24/7 it would be inffective and would definitely hurt the computer to always check for update by comparing 2 files and saving it locally. Any sugesstions?

[venkat]

is there any option like a webhook, that sends notification immediately as soon as file is chnaged.

[alloydsaviomendonca]

Is there a way to find out exactly what has been changed and on which line in python

[ludvigmarkgren]

Very good! Do you think a similar setup for matlab is possible? I'm trying to get notification when a website changes.

[syedsaifuddintaj]

Hi Tony,

Can we detect if a file is added or deleted from a directory the same way?

[ronnyzhang]

Hi Tony, Can we detect if only a character is changed?

[megaraitei]

Hello,
I'm following this tutorial, and it's very helpful.

Now,
for hash_latest=sha1()
You mentioned the entire path for the file (latest.pdf)
I don't want to type the entire path.
I want to use
os.getcwd()
Or
os.path.join(path_dir,

Something that automates the path.
Since all the files will reside in the same directory.

Please suggest how.

[rohitrawat]

@Tony Teaches Tech make a video on how to make check for updates an application using python.

[XBlud]

Why bother with hashing tho? Shouldn't just comparing the binary read data be the same thing?

[dimitrygrozny]

The thing is you don't need to hash if you can just connect to the program that saves the file, and take an input every time it saves.

[arsononemwv]

pushsafer is giving me a 404 error now ?