minor fixes as reported by pylint

4 files changed, 10 insertions, 11 deletions

diff --git a/pyasn1/__init__.py b/pyasn1/__init__.py
index 9817cd0..77793cd 100644
--- a/pyasn1/__init__.py
+++ b/pyasn1/__init__.py
@@ -4,5 +4,5 @@ import sys
 __version__ = '0.1.8'
 
 if sys.version_info[:2] < (2, 4):
-  raise RuntimeError('PyASN1 requires Python 2.4 or later')
+    raise RuntimeError('PyASN1 requires Python 2.4 or later')
 
diff --git a/pyasn1/codec/ber/decoder.py b/pyasn1/codec/ber/decoder.py
index be0cf49..6e66044 100644
--- a/pyasn1/codec/ber/decoder.py
+++ b/pyasn1/codec/ber/decoder.py
@@ -1,7 +1,7 @@
 # BER decoder
-from pyasn1.type import tag, base, univ, char, useful, tagmap
+from pyasn1.type import tag, univ, char, useful, tagmap
 from pyasn1.codec.ber import eoo
-from pyasn1.compat.octets import oct2int, octs2ints, isOctetsType
+from pyasn1.compat.octets import oct2int, isOctetsType
 from pyasn1 import debug, error
 
 class AbstractDecoder:
@@ -11,7 +11,7 @@ class AbstractDecoder:
         raise error.PyAsn1Error('Decoder not implemented for %s' % (tagSet,))
 
     def indefLenValueDecoder(self, fullSubstrate, substrate, asn1Spec, tagSet,
-                     length, state, decodeFun, substrateFun):
+                             length, state, decodeFun, substrateFun):
         raise error.PyAsn1Error('Indefinite length mode decoder not implemented for %s' % (tagSet,))
 
 class AbstractSimpleDecoder(AbstractDecoder):
@@ -641,9 +641,9 @@ class Decoder:
             if state == stDecodeLength:
                 # Decode length
                 if not substrate:
-                     raise error.SubstrateUnderrunError(
-                         'Short octet stream on length decoding'
-                         )
+                    raise error.SubstrateUnderrunError(
+                        'Short octet stream on length decoding'
+                    )
                 firstOctet  = oct2int(substrate[0])
                 if firstOctet == 128:
                     size = 1
@@ -725,7 +725,7 @@ class Decoder:
                             debug.logger('  %r -> %s' % (t, v.__class__.__name__))
                         if asn1Spec.getNegMap():
                             debug.logger('but neither of: ')
-                            for i in asn1Spec.getNegMap().items():
+                            for t, v in asn1Spec.getNegMap().items():
                                 debug.logger('  %r -> %s' % (t, v.__class__.__name__))
                         debug.logger('new candidate ASN.1 spec is %s, chosen by %r' % (__chosenSpec is None and '<none>' or __chosenSpec.__class__.__name__, tagSet))
                 else:
diff --git a/pyasn1/codec/der/decoder.py b/pyasn1/codec/der/decoder.py
index 604abec..1ecdf5c 100644
--- a/pyasn1/codec/der/decoder.py
+++ b/pyasn1/codec/der/decoder.py
@@ -1,5 +1,4 @@
 # DER decoder
-from pyasn1.type import univ
 from pyasn1.codec.cer import decoder
 
 tagMap = decoder.tagMap
diff --git a/pyasn1/type/base.py b/pyasn1/type/base.py
index 4087371..6c7eeec 100644
--- a/pyasn1/type/base.py
+++ b/pyasn1/type/base.py
@@ -1,13 +1,13 @@
 # Base classes for ASN.1 types
 import sys
-from pyasn1.type import constraint, tagmap
+from pyasn1.type import constraint, tagmap, tag
 from pyasn1 import error
 
 class Asn1Item: pass
 
 class Asn1ItemBase(Asn1Item):
     # Set of tags for this ASN.1 type
-    tagSet = ()
+    tagSet = tag.TagSet()
     
     # A list of constraint.Constraint instances for checking values
     subtypeSpec = constraint.ConstraintsIntersection()