Normalize whitespace and imports

setuptools/command/setopt.py

-import distutils, os
+import os
+import distutils
 from setuptools import Command
 from distutils.util import convert_path
 from distutils import log
-from distutils.errors import *
+from distutils.errors import DistutilsOptionError
 
 __all__ = ['config_file', 'edit_config', 'option_base', 'setopt']
 
@@ -25,20 +26,6 @@ def config_file(kind="local"):
         "config_file() type must be 'local', 'global', or 'user'", kind
     )
 
-
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 def edit_config(filename, settings, dry_run=False):
     """Edit a configuration file to include `settings`
 
@@ -61,7 +48,8 @@ def edit_config(filename, settings, dry_run=False):
                 opts.add_section(section)
             for option,value in options.items():
                 if value is None:
-                    log.debug("Deleting %s.%s from %s",
+                    log.debug(
+                        "Deleting %s.%s from %s",
                         section, option, filename
                     )
                     opts.remove_option(section,option)
@@ -78,7 +66,8 @@ def edit_config(filename, settings, dry_run=False):
 
     log.info("Writing %s", filename)
     if not dry_run:
-        f = open(filename,'w'); opts.write(f); f.close()
+        with open(filename, 'w') as f:
+            opts.write(f)
 
 class option_base(Command):
     """Abstract base class for commands that mess with config files"""
@@ -119,8 +108,6 @@ class option_base(Command):
         self.filename, = filenames
 
 
-
-
 class setopt(option_base):
     """Save command-line options to a file"""
 
@@ -156,9 +143,3 @@ class setopt(option_base):
             },
             self.dry_run
         )
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