gnu: Add python-statannot.

* gnu/packages/python-science.scm (python-statannot): New variable.

gnu/packages/python-science.scm

@@ -1,5 +1,5 @@
 ;;; GNU Guix --- Functional package management for GNU
-;;; Copyright © 2015, 2016, 2020 Ricardo Wurmus <rekado@elephly.net>
+;;; Copyright © 2015, 2016, 2020, 2021 Ricardo Wurmus <rekado@elephly.net>
 ;;; Copyright © 2015 Federico Beffa <beffa@fbengineering.ch>
 ;;; Copyright © 2016 Ben Woodcroft <donttrustben@gmail.com>
 ;;; Copyright © 2016 Hartmut Goebel <h.goebel@crazy-compilers.com>
@@ -531,3 +531,29 @@ serialization and deserialization of numerical and array data types provided
 by numpy using the highly efficient @code{msgpack} format.  Serialization of
 Python's native complex data types is also supported.")
     (license license:bsd-3)))
+
+(define-public python-statannot
+  (package
+    (name "python-statannot")
+    (version "0.2.3")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (pypi-uri "statannot" version))
+       (sha256
+        (base32
+         "1f8c2sylzr7lpjbyqxsqlp9xi8rj3d8c9hfh98x4jbb83zxc4026"))))
+    (build-system python-build-system)
+    (propagated-inputs
+     `(("python-numpy" ,python-numpy)
+       ("python-seaborn" ,python-seaborn)
+       ("python-matplotlib" ,python-matplotlib)
+       ("python-pandas" ,python-pandas)
+       ("python-scipy" ,python-scipy)))
+    (home-page
+     "https://github.com/webermarcolivier/statannot")
+    (synopsis "Add annotations to existing plots generated by seaborn")
+    (description
+     "This is a Python package to compute statistical test and add statistical
+annotations on an existing boxplots and barplots generated by seaborn.")
+    (license license:expat)))