Uppercase global constants (#238)

This is a massive patch essentially upper-casing global/class attributes
that mean to be constants.

Some previously exposed constants have been preserved for compatibility
reasons (notably, in `hlapi`), though the rest might break user code relying
on pysnmp 4.

1 files changed, 1 insertions, 0 deletions

diff --git a/pysnmp/error.py b/pysnmp/error.py
index f8004638..e53c6af4 100644
--- a/pysnmp/error.py
+++ b/pysnmp/error.py
@@ -9,6 +9,7 @@ import sys
 
 
 class PySnmpError(Exception):
+
     def __init__(self, *args):
         msg = args and str(args[0]) or ''