Make pylint and pycodestyle happy with the code

passlib_werkzeug/__init__.py

@@ -16,23 +16,24 @@ SALT_CHARS = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"
 
 
 class werkzeug_pbkdf2_sha256(uh.HasSalt, uh.HasRounds, uh.GenericHandler):
-    checksum_chars = AB64_CHARS
+    # pylint: disable=invalid-name
+    """Passlib handler for Werkzeug’s PBKDF2:SHA-256 passwords
+    """
+
+    checksum_chars = '0123456789abcdef'
     checksum_size = 64
     default_rounds = 150000
     default_salt_chars = SALT_CHARS
     default_salt_size = 8
     _digest = 'sha256'
     ident = u('pbkdf2:sha256')
-    max_rounds = 0xffffffff
-    max_salt_size = None
     min_salt_size = 1
     name = 'werkzeug_pbkdf2_sha256'
     salt_chars = SALT_CHARS
-    setting_kwds = ('salt', 'salt_size')
-    werkzeug_name = 'pbkdf2:sha256'
 
+    # pylint: disable=arguments-differ
     @classmethod
-    def from_string(cls, password_hash):
+    def from_string(cls, password_hash, **context):
         """Create a new hash object from a string
         """