debian/bin, debian/lib/python: Fix most errors reported by pycodestyle

Fix coding style violations reported by pycodestyle.  This is
mostly a matter of reformatting code, particularly to eliminate
over-long lines.  I also rename one variable ("l" is considered
visually ambiguous) and change a bare "except" to explicitly
catch all exceptions.

There are three types of error or warning remaining:

- debian/bin/...: E402 module level import not at top of file
  Scripts in debian/bin need to modify the import path before
  importing from debian/lib/python.
- E127 continuation line over-indented for visual indent
  This seems to be a false positive.  pycodestyle doesn't seem to be
  happy with any level of indent (including 0) on a continuation line
  in a "with" statement.
- debian/lib/python/debian_linux/debian.py:15:2: W291 trailing whitespace
  This is a false positive.  The trailing spaces are in a long
  string and are intentional.

1 files changed, 1 insertions, 1 deletions

diff --git a/debian/lib/python/debian_linux/abi.py b/debian/lib/python/debian_linux/abi.py
index 0c4b3bdbc7c9..8532db16da8e 100644
--- a/debian/lib/python/debian_linux/abi.py
+++ b/debian/lib/python/debian_linux/abi.py
@@ -39,4 +39,4 @@ class Symbols(dict):
     def write(self, file):
         for s in sorted(self.values(), key=lambda i: i.name):
             file.write("%s %s %s %s\n" %
-                    (s.version, s.name, s.module, s.export))
+                       (s.version, s.name, s.module, s.export))