Final commit, I've learned my lesson

Cheatsheet.txt

@@ -18,6 +18,9 @@ Python's __main__ and __init__
 As far as I know, __init__ is the initialization script, just like Unix and alike's /etc/init.rc script. It's required to make it so that it's a package.
 The double underscores is for signifying that it's a global variable.
 
+b before string, for example b'relaxed' is a way to say that it's a binary string
+
+
 
 -----START DKIM DIRECTORY-----
 [__init__]

dkim/__init__.py

@@ -301,6 +301,7 @@ def validate_signature_fields(sig, mandatory_fields=[b'v', b'a', b'b', b'bh', b'
     if b'cv' in sig and sig[b'cv'] not in (CV_Pass, CV_Fail, CV_None):
         raise ValidationError("cv= value is not valid (%s)" % sig[b'cv'])
 
+    # Somehow convert it to UTF8 before going to this?
     # Limit domain validation to ASCII domains because too hard
     try:
         str(sig[b'd'], 'ascii')
@@ -311,6 +312,7 @@ def validate_signature_fields(sig, mandatory_fields=[b'v', b'a', b'b', b'bh', b'
         # Not an ASCII domain
         pass
 
+
     # Nasty hack to support both str and bytes... check for both the
     # character and integer values.
     if not arc and b'i' in sig and (

dkim/__main__.py

@@ -1,7 +1,7 @@
 import unittest
 import doctest
 import dkim
-from tests import test_suite
+from dkim.tests import test_suite
 
 doctest.testmod(dkim)
 unittest.TextTestRunner().run(test_suite())