pep8-ify download.py

Signed-off-by: Mattia Rizzolo <mapreri@ubuntu.com>

uitwww/download.py

@@ -115,7 +115,7 @@ class Downloads:
                         response = requests.get("%s/MD5SUMS" % path)
                         if response.status_code == 404:
                             raise RuntimeError(
-                                "Missing {} {} on {}".format(distro, release, source),
+                                "Missing {} {} on {}".format(distro, release, url),
                             )
 
                         for line in response.text.split("\n"):
@@ -223,7 +223,7 @@ class Downloads:
         def index():
             return flask.render_template(
                 "download/index.html",
-                distros = self.config["distros"],
+                distros=self.config["distros"],
             )
 
         @bp.route("/<distro>")
@@ -234,10 +234,10 @@ class Downloads:
 
             return flask.render_template(
                 "download/landing.html",
-                distro_name = distro,
-                distro = self.config["distros"][distro],
-                releases = self.config["releases"],
-                archs = self.config["archs"],
+                distro_name=distro,
+                distro=self.config["distros"][distro],
+                releases=self.config["releases"],
+                archs=self.config["archs"],
             )
 
         @bp.route("/+redirect", methods=["POST"])