[bug#30197] [PATCH] gnu: Add python-yapf.

[Fis Trivial]

* gnu/packages/python.scm (python-yapf, python2-yapf): New variables.
---
 gnu/packages/python.scm | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/gnu/packages/python.scm b/gnu/packages/python.scm
index 9b9b22be2..a78a2f0cf 100644
--- a/gnu/packages/python.scm
+++ b/gnu/packages/python.scm
@@ -45,6 +45,7 @@
 ;;; Copyright © 2017 Rutger Helling <address@hidden>
 ;;; Copyright © 2017 Muriithi Frederick Muriuki <address@hidden>
 ;;; Copyright © 2017 Brendan Tildesley <address@hidden>
+;;; Copyright © 2018 Fis Trivial <address@hidden>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -12337,3 +12338,26 @@ and normal mode analysis, but also basic routines for 
implementing new methods
 for simulation and analysis.  The library is currently not actively maintained
 and works only with Python 2 and NumPy < 1.9.")
     (license license:cecill-c)))
+
+(define-public python-yapf
+  (package
+    (name "python-yapf")
+    (version "0.20.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (pypi-uri "yapf" version))
+       (sha256
+        (base32
+         "0s7l6afzxvpx39kzd0lwshlaxw8m4fwh4iy0rlmav4vipr3g46dx"))))
+    (build-system python-build-system)
+    (home-page "https://github.com/google/yapf";)
+    (synopsis "Formatter for Python code")
+    (description "YAPF is a formatter for Python code.  It's based off of
address@hidden, developed by Daniel Jasper.  In essence, the algorithm
+takes the code and reformats it to the best formatting that conforms to the
+style guide, even if the original code didn't violate the style guide.")
+    (license license:asl2.0)))
+
+(define-public python2-yapf
+  (package-with-python2 python-yapf))
-- 
2.13.6