PYT file icon

PYT File Extension

Python Declaration
  • Developer
    Python Software Foundation
  • Category
  • Popularity
    5 (1 votes)

What is PYT file?

PYT filename suffix is mostly used for Python Declaration files. Python Declaration format was developed by Python Software Foundation. Files with PYT extension may be used by programs distributed for Windows platform. PYT file format, along with 1305 other file formats, belongs to the Settings Files category. The most popular software that supports PYT files is Python. Software named Python was created by Python Software Foundation. In order to find more detailed information on the software and PYT files, check the developer’s official website.

Programs which support PYT file extension

Below is a table that list programs that support PYT files. Files with PYT extension, just like any other file formats, can be found on any operating system. The files in question may be transferred to other devices, be it mobile or stationary, yet not all systems may be capable of properly handling such files.

Programs that support PYT file

Windows Windows

How to open file with PYT extension?

There can be multiple causes why you have problems with opening PYT files on given system. What is important, all common issues related to files with PYT extension can be resolved by the users themselves. The process is quick and doesn’t involve an IT expert. We have prepared a listing of which will help you resolve your problems with PYT files.

Step 1. Get the Python

Install software to open PYT file The main and most frequent cause precluding users form opening PYT files is that no program that can handle PYT files is installed on user’s system. The solution is straightforward, just download and install Python. On the top of the page a list that contains all programs grouped based on operating systems supported can be found. The safest method of downloading Python installed is by going to developer’s website (Python Software Foundation) and downloading the software using provided links.

Step 2. Check the version of Python and update if needed

Update software that support file extension PYTIf the problems with opening PYT files still occur even after installing Python, it is possible that you have an outdated version of the software. Check the developer’s website whether a newer version of Python is available. It may also happen that software creators by updating their applications add compatibility with other, newer file formats. This can be one of the causes why PYT files are not compatible with Python. The most recent version of Python is backward compatible and can handle file formats supported by older versions of the software.

Step 3. Assign Python to PYT files

If the issue has not been solved in the previous step, you should associate PYT files with latest version of Python you have installed on your device. The next step should pose no problems. The procedure is straightforward and largely system-independent

Associate software with PYT file on Windows

Change the default application in Windows

  • Clicking the PYT with right mouse button will bring a menu from which you should select the Open with option
  • Click Choose another app and then select More apps option
  • Finally select Look for another app on this PC, point to the folder where Python is installed, check the Always use this app to open PYT files box and conform your selection by clicking OK button
Associate software with PYT file on Mac

Change the default application in Mac OS

  • From the drop-down menu, accessed by clicking the file with PYT extension, select Information
  • Open the Open with section by clicking its name
  • Select the appropriate software and save your settings by clicking Change all
  • A message window should appear informing that This change will be applied to all files with PYT extension. By clicking Continue you confirm your selection.

Step 4. Ensure that the PYT file is complete and free of errors

Should the problem still occur after following steps 1-3, check if the PYT file is valid. Being unable to access the file can be related to various issues.

Check PYT file for viruses
1. Verify that the PYT in question is not infected with a computer virus

Should it happed that the PYT is infected with a virus, this may be that cause that prevents you from accessing it. Scan the PYT file as well as your computer for malware or viruses. If the scanner detected that the PYT file is unsafe, proceed as instructed by the antivirus program to neutralize the threat.

2. Verify that the PYT file’s structure is intact

If you obtained the problematic PYT file from a third party, ask them to supply you with another copy. It is possible that the file has not been properly copied to a data storage and is incomplete and therefore cannot be opened. It could happen the the download process of file with PYT extension was interrupted and the file data is defective. Download the file again from the same source.

3. Check if the user that you are logged as has administrative privileges.

Some files require elevated access rights to open them. Log out of your current account and log in to an account with sufficient access privileges. Then open the Python Declaration file.

4. Make sure that the system has sufficient resources to run Python

If the systems has insufficient resources to open PYT files, try closing all currently running applications and try again.

5. Verify that your operating system and drivers are up to date

Latest versions of programs and drivers may help you solve problems with Python Declaration files and ensure security of your device and operating system. It is possible that one of the available system or driver updates may solve the problems with PYT files affecting older versions of given software.

Do you want to help?

If you have additional information about the PYT file, we will be grateful if you share it with our users. To do this, use the form here and send us your information on PYT file.

Top File Extensions
Show more
File Extension of the day
lbl icon


Database Label Format Format

LBL file extension is used by database label files supported by various database applications, including dBASE. LBL file stores a formatted label d...