Notes about the PISI file extension:
Incorrect file associations could be the result of underlying issues within your PC system. As such it is highly recommended to scan your PC for invalid registry entries, unused processes and other unfavourable system settings to identify slowdown issues.
The PISI file type is primarily associated with 'Pardus Linux' by Scientific & Technological Research Council of Turkey. PiSi (Packages Installed Successfully, as Intended) (pronounced pee-see) is the package management system of Pardus. It is the tool that installs, upgrades and removes the software packages successfully, as intended. This is an LZMA-compressed archive for use with Pardus Linux's PiSi package manager. It is written in Python and attempts to make package creation and installation easier for the user.