PYF file format description

Many people share .pyf files without attaching instructions on how to use it. Yet it isn’t evident for everyone which program a .pyf file can be edited, converted or printed with. On this page, we try to provide assistance for handling .pyf files.

1 filename extension(s) found in our database.

.pyf - F2PY Signature File

The PYF development files are related to F2PY. The PYF file is a F2PY Signature File. The purpose of the F2PY (Fortran to Python interface generator) project is to provide connection between Python and Fortran languages. F2PY is a Python extension tool for creating Python C/API modules from (handwritten or F2PY generated) signature files (or directly from Fortran sources).

Development files
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F2PY Signature File related extensions:
Squeak Changes Data
Python Egg Metadata
Game Maker 3.x Data
Flowgorithm Program
Clarion Source Code
KDevelop Dialog Box

Naturally, other applications may also use the .pyf file extension. Even harmful programs can create .pyf files. Be especially cautious with .pyf files coming from an unknown source!

Can't open a .pyf file?

When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:

Windows can't open this file:


To open this file, Windows needs to know what program you want to use to open it. Windows can go online to look it up automatically, or you can manually select one from a list of programs that are installed on your computer.

To avoid this error, you need to set the file association correctly.

The .pyf file extension is often given incorrectly!

According to the searches on our site, these misspellings were the most common in the past year:

lyf, pf, pgf, phf, pjf, ptf, puf, py, pyb, pyc, pyd, pye, pyg, pyr, pyt

Is it possible that the filename extension is misspelled?

Similar file extensions in our database:

ALEID2000 Curves Library
Python Dynamic Module
StuffIt Private File
YahElite Personality File
SOURCEdefender Encrypted Script
GPS Pathfinder Office Geoid Grid

Operating systems currently supports the following operating systems:

Windows XP/Vista, Windows 7/8/10, Windows 11, CentOS, Debian GNU/Linux, Ubuntu Linux, FreeBSD, macOS, Mac OS X, iOS, Android

If you find the information on this page useful, please feel free to link to this page.

If you have useful information about the .pyf file format, then write to us! >> PYF file