Reminds me of something I saw not too long ago...

https://github.com/JulienPalard/Pipe

It would be really cool (though admittedly less Pythonic) to combine the infix notation provided by the Pipe library to allow more shell-like function chaining.

Instead of this...

  print wc(ls("/etc", "-1"), "-l")

You would have this...

  print ls("/etc", "-1") | wc("-l")