diff --git a/lib/spack/spack/architecture.py b/lib/spack/spack/architecture.py
index eec7636d00..62c25c8003 100644
--- a/lib/spack/spack/architecture.py
+++ b/lib/spack/spack/architecture.py
@@ -34,15 +34,14 @@
 
 class InvalidSysTypeError(serr.SpackError):
     def __init__(self, sys_type):
-        super(InvalidSysTypeError, self).__init__(
-            "Invalid sys_type value for Spack: " + sys_type)
+        super(InvalidSysTypeError,
+              self).__init__("Invalid sys_type value for Spack: " + sys_type)
 
 
 class NoSysTypeError(serr.SpackError):
     def __init__(self):
-        super(NoSysTypeError, self).__init__(
-            "Could not determine sys_type for this machine.")
-
+        super(NoSysTypeError,
+              self).__init__("Could not determine sys_type for this machine.")
 
 
 def get_sys_type_from_spack_globals():
@@ -70,15 +69,15 @@ def get_sys_type_from_platform():
 @memoized
 def sys_type():
     """Returns a SysType for the current machine."""
-    methods = [get_sys_type_from_spack_globals,
-               get_sys_type_from_environment,
+    methods = [get_sys_type_from_spack_globals, get_sys_type_from_environment,
                get_sys_type_from_platform]
 
     # search for a method that doesn't return None
     sys_type = None
     for method in methods:
         sys_type = method()
-        if sys_type: break
+        if sys_type:
+            break
 
     # Couldn't determine the sys_type for this machine.
     if sys_type is None:
diff --git a/var/spack/repos/builtin/packages/ImageMagick/package.py b/var/spack/repos/builtin/packages/ImageMagick/package.py
index d0a820b5fc..7a3d12e364 100644
--- a/var/spack/repos/builtin/packages/ImageMagick/package.py
+++ b/var/spack/repos/builtin/packages/ImageMagick/package.py
@@ -1,10 +1,11 @@
 from spack import *
 
+
 class Imagemagick(Package):
     """ImageMagick is a image processing library"""
     homepage = "http://www.imagemagic.org"
 
-    #-------------------------------------------------------------------------
+    # -------------------------------------------------------------------------
     # ImageMagick does not keep around anything but *-10 versions, so
     # this URL may change.  If you want the bleeding edge, you can
     # uncomment it and see if it works but you may need to try to
@@ -17,13 +18,13 @@ class Imagemagick(Package):
     # version('6.9.0-6', 'c1bce7396c22995b8bdb56b7797b4a1b',
     # url="http://www.imagemagick.org/download/ImageMagick-6.9.0-6.tar.bz2")
 
-    #-------------------------------------------------------------------------
+    # -------------------------------------------------------------------------
     # *-10 versions are archived, so these versions should fetch reliably.
     # -------------------------------------------------------------------------
-    version('6.8.9-10', 'aa050bf9785e571c956c111377bbf57c',
-            url="http://sourceforge.net/projects/imagemagick/files/old-sources/6.x/6.8/ImageMagick-6.8.9-10.tar.gz/download")
-
-
+    version(
+        '6.8.9-10',
+        'aa050bf9785e571c956c111377bbf57c',
+        url="http://sourceforge.net/projects/imagemagick/files/old-sources/6.x/6.8/ImageMagick-6.8.9-10.tar.gz/download")  # NOQA: ignore=E501
 
     depends_on('jpeg')
     depends_on('libtool')
@@ -34,6 +35,5 @@ class Imagemagick(Package):
 
     def install(self, spec, prefix):
         configure("--prefix=%s" % prefix)
-
         make()
         make("install")
diff --git a/var/spack/repos/builtin/packages/Mitos/package.py b/var/spack/repos/builtin/packages/Mitos/package.py
index 073c473b93..ec1d56a5c7 100644
--- a/var/spack/repos/builtin/packages/Mitos/package.py
+++ b/var/spack/repos/builtin/packages/Mitos/package.py
@@ -1,26 +1,23 @@
 from spack import *
 
+
 class Mitos(Package):
     """Mitos is a library and a tool for collecting sampled memory
     performance data to view with MemAxes"""
 
     homepage = "https://github.com/llnl/Mitos"
-    url      = "https://github.com/llnl/Mitos"
+    url = "https://github.com/llnl/Mitos"
 
     version('0.9.2',
             git='https://github.com/llnl/Mitos.git',
             commit='8cb143a2e8c00353ff531a781a9ca0992b0aaa3d')
 
-    version('0.9.1',
-            git='https://github.com/llnl/Mitos.git',
-            tag='v0.9.1')
+    version('0.9.1', git='https://github.com/llnl/Mitos.git', tag='v0.9.1')
 
     depends_on('dyninst@8.2.1:')
     depends_on('hwloc')
     depends_on('mpi')
 
-
-
     def install(self, spec, prefix):
         with working_dir('spack-build', create=True):
             cmake('..', *std_cmake_args)