Code cleanup

jsonpath_ng/jsonpath.py

@@ -1,7 +1,6 @@
 from __future__ import unicode_literals, print_function, absolute_import, division, generators, nested_scopes
 import logging
 from itertools import *  # noqa
-from .exceptions import JSONPathError
 
 # Get logger name
 logger = logging.getLogger(__name__)
@@ -739,7 +738,7 @@ def find(self, datum):
 
         # Some iterators do not support slicing but we can still
         # at least work for '*'
-        if self.start == None and self.end == None and self.step == None:
+        if self.start is None and self.end is None and self.step is None:
             return [DatumInContext(datum.value[i], path=Index(i), context=datum) for i in range(0, len(datum.value))]
         else:
             return [DatumInContext(datum.value[i], path=Index(i), context=datum) for i in range(0, len(datum.value))[self.start:self.end:self.step]]
@@ -762,7 +761,7 @@ def filter(self, fn, data):
         return data
 
     def __str__(self):
-        if self.start == None and self.end == None and self.step == None:
+        if self.start is None and self.end is None and self.step is None:
             return '[*]'
         else:
             return '[%s%s%s]' % (self.start or '',

jsonpath_ng/lexer.py

@@ -16,7 +16,7 @@ class JsonPathLexer(object):
 
     def __init__(self, debug=False):
         self.debug = debug
-        if self.__doc__ == None:
+        if self.__doc__ is None:
             raise JsonPathLexerError('Docstrings have been removed! By design of PLY, jsonpath-rw requires docstrings. You must not use PYTHONOPTIMIZE=2 or python -OO.')
 
     def tokenize(self, string):
@@ -31,7 +31,8 @@ def tokenize(self, string):
 
         while True:
             t = new_lexer.token()
-            if t is None: break
+            if t is None:
+                break
             t.col = t.lexpos - new_lexer.latest_newline
             yield t
 

jsonpath_ng/parser.py

@@ -5,6 +5,7 @@
     generators,
     nested_scopes,
 )
+import logging
 import sys
 import os.path
 
@@ -55,7 +56,8 @@ def parse_token_stream(self, token_iterator, start_symbol='jsonpath'):
 
         parsing_table_module = '_'.join([module_name, start_symbol, 'parsetab'])
 
-        # And we regenerate the parse table every time; it doesn't actually take that long!
+        # And we regenerate the parse table every time;
+        # it doesn't actually take that long!
         new_parser = ply.yacc.yacc(module=self,
                                    debug=self.debug,
                                    tabmodule = parsing_table_module,