gnu: Add python-imagesize.

* gnu/packages/python.scm (python-imagesize, python2-imagesize): New variables.

gnu/packages/python.scm

@@ -9674,3 +9674,29 @@ implementation for Python.")
       (native-inputs
        `(("python2-ipaddress" ,python2-ipaddress)
          ,@(package-native-inputs base))))))
+
+(define-public python-imagesize
+  (package
+    (name "python-imagesize")
+    (version "0.7.1")
+    (source (origin
+              (method url-fetch)
+              (uri (pypi-uri "imagesize" version))
+              (sha256
+               (base32
+                "0qk07k0z4241lkzzjji7z4da04pcvg7bfc4xz1934zlqhwmwdcha"))))
+    (build-system python-build-system)
+    (synopsis "Calculate the size of an image")
+    (description "This Python module returns the size of an image.  It supports
+the PNG, JPEG, JPEG 2000, and GIF formats.")
+    (home-page "https://github.com/shibukawa/imagesize_py")
+    (license license:expat)
+    (properties `((python2-variant . ,(delay python2-imagesize))))))
+
+(define-public python2-imagesize
+  (let ((base (package-with-python2 (strip-python2-variant python-imagesize))))
+    (package
+      (inherit base)
+      (native-inputs
+       `(("python2-setuptools" ,python2-setuptools)
+         ,@(package-native-inputs base))))))