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, 2 insertions, 1 deletions

diff --git a/debian/lib/python/debian_linux/firmware.py b/debian/lib/python/debian_linux/firmware.py
index ece3743d395e..8bb4f08504e7 100644
--- a/debian/lib/python/debian_linux/firmware.py
+++ b/debian/lib/python/debian_linux/firmware.py
@@ -80,7 +80,8 @@ class FirmwareWhence(list):
                     licence = value
             elif licence is not None:
                 licence = (licence + '\n' +
-                           re.sub(r'^(?:[/ ]\*| \*/)?\s*(.*?)\s*$', r'\1', line))
+                           re.sub(r'^(?:[/ ]\*| \*/)?\s*(.*?)\s*$', r'\1',
+                                  line))
 
         # Finish last section if non-empty
         for b in binary: