executing standalone fabric script by calling it by its name, without the .py extension

Question

I have a fabric script called fwp.py that I run without calling it throug fab by using:

if __name__ == '__main__':
    # imports for standalone mode only
    import sys
    import fabric.main

    fabric.main.main(fabfile_locations=[__file__])

The thing is then have to call the script by calling fwp.py. I'd like to rename it as fwp to be able to call it as fwp. But doing that would result in

Fatal error: Couldn't find any fabfiles!

Is there a way to make Python/Fabric import this file, despite the lack of a ".py" extension?

To reiterate and clarify:

I'm not using the "fab" utility (e.g. as fab task task:parameter); just calling my script as fwp.py task task:parameter, and would like to be able to call it as fwp task task:parameter.

Update

It's not a duplicate of this question. The question is not "How to run a stand-alone fabric script?", but "How to do so, while having a script without a .py" extension.

Answer 1

EDIT: Original answer corrected

The fabric.main.main() function automatically adds .py to the end of supplied fabfile locations (see https://github.com/fabric/fabric/blob/master/fabric/main.py#L93). Unfortunately that function also uses Python's import machinery to load the file so it has to look like a module or package. Without reimplementing much of the fabric.main module I don't think it will be possible. You could try monkey-patching both fabric.main.find_fabfiles and fabric.main.load_fabfiles to make it work.

Origininal answer (wrong)

I can get this to work unaltered on a freshly installed fabric package. The following will execute with a filename fwp and executable permission on version 1.10.1, Python2.7. I would just try upgrading fabric.

#!/usr/bin/env python

from fabric.api import *
import fabric.main

def do():
    local('echo "Hello World"')

if __name__ == '__main__':
    fabric.main.main(fabfile_locations=[__file__])

Output:

$ ./fwp do
Hello World

Done